Search Results for author: Kyunghyun Cho

Found 276 papers, 134 papers with code

Multi-lingual Common Semantic Space Construction via Cluster-consistent Word Embedding

no code implementations EMNLP 2018 Lifu Huang, Kyunghyun Cho, Boliang Zhang, Heng Ji, Kevin Knight

We construct a multilingual common semantic space based on distributional semantics, where words from multiple languages are projected into a shared space to enable knowledge and resource transfer across languages.

Clustering Word Alignment

Emergent Translation in Multi-Agent Communication

no code implementations ICLR 2018 Jason Lee, Kyunghyun Cho, Jason Weston, Douwe Kiela

While most machine translation systems to date are trained on large parallel corpora, humans learn language in a different way: by being grounded in an environment and interacting with other humans.

Machine Translation Sentence +1

Fine-Grained Attention Mechanism for Neural Machine Translation

no code implementations30 Mar 2018 Heeyoul Choi, Kyunghyun Cho, Yoshua Bengio

Neural machine translation (NMT) has been a new paradigm in machine translation, and the attention mechanism has become the dominant approach with the state-of-the-art records in many language pairs.

Machine Translation NMT +1

Search Engine Guided Non-Parametric Neural Machine Translation

no code implementations20 May 2017 Jiatao Gu, Yong Wang, Kyunghyun Cho, Victor O. K. Li

In this paper, we extend an attention-based neural machine translation (NMT) model by allowing it to access an entire training set of parallel sentence pairs even after training.

Machine Translation NMT +3

Retrieval-Augmented Convolutional Neural Networks for Improved Robustness against Adversarial Examples

no code implementations26 Feb 2018 Jake Zhao, Kyunghyun Cho

We propose a retrieval-augmented convolutional network and propose to train it with local mixup, a novel variant of the recently proposed mixup algorithm.

Retrieval

Graph Convolutional Networks for Classification with a Structured Label Space

no code implementations12 Oct 2017 Meihao Chen, Zhuoru Lin, Kyunghyun Cho

It is a usual practice to ignore any structural information underlying classes in multi-class classification.

Classification Document Classification +3

Loss Functions for Multiset Prediction

no code implementations ICLR 2018 Sean Welleck, Zixin Yao, Yu Gai, Jialin Mao, Zheng Zhang, Kyunghyun Cho

In this paper, we propose a novel multiset loss function by viewing this problem from the perspective of sequential decision making.

Decision Making Reinforcement Learning (RL)

Attention-based Mixture Density Recurrent Networks for History-based Recommendation

no code implementations22 Sep 2017 Tian Wang, Kyunghyun Cho

The goal of personalized history-based recommendation is to automatically output a distribution over all the items given a sequence of previous purchases of a user.

Does Neural Machine Translation Benefit from Larger Context?

no code implementations17 Apr 2017 Sebastien Jean, Stanislas Lauly, Orhan Firat, Kyunghyun Cho

We propose a neural machine translation architecture that models the surrounding text in addition to the source sentence.

Machine Translation Sentence +1

Dynamic Neural Turing Machine with Soft and Hard Addressing Schemes

no code implementations30 Jun 2016 Caglar Gulcehre, Sarath Chandar, Kyunghyun Cho, Yoshua Bengio

We investigate the mechanisms and effects of learning to read and write into a memory through experiments on Facebook bAbI tasks using both a feedforward and GRUcontroller.

Natural Language Inference Question Answering

Semantic Noise Modeling for Better Representation Learning

no code implementations4 Nov 2016 Hyo-Eun Kim, Sangheum Hwang, Kyunghyun Cho

From the base model, we introduce a semantic noise modeling method which enables class-conditional perturbation on latent space to enhance the representational power of learned latent feature.

Representation Learning

Spatio-temporal Dynamics of Intrinsic Networks in Functional Magnetic Imaging Data Using Recurrent Neural Networks

no code implementations3 Nov 2016 R. Devon Hjelm, Eswar Damaraju, Kyunghyun Cho, Helmut Laufs, Sergey M. Plis, Vince Calhoun

We introduce a novel recurrent neural network (RNN) approach to account for temporal dynamics and dependencies in brain networks observed via functional magnetic resonance imaging (fMRI).

blind source separation

A Correlational Encoder Decoder Architecture for Pivot Based Sequence Generation

no code implementations COLING 2016 Amrita Saha, Mitesh M. Khapra, Sarath Chandar, Janarthanan Rajendran, Kyunghyun Cho

However, there is no parallel training data available between X and Y but, training data is available between X & Z and Z & Y (as is often the case in many real world applications).

Decoder Transliteration

Zero-Resource Translation with Multi-Lingual Neural Machine Translation

no code implementations EMNLP 2016 Orhan Firat, Baskaran Sankaran, Yaser Al-Onaizan, Fatos T. Yarman Vural, Kyunghyun Cho

In this paper, we propose a novel finetuning algorithm for the recently introduced multi-way, mulitlingual neural machine translate that enables zero-resource machine translation.

Machine Translation Translation

First Result on Arabic Neural Machine Translation

no code implementations8 Jun 2016 Amjad Almahairi, Kyunghyun Cho, Nizar Habash, Aaron Courville

Neural machine translation has become a major alternative to widely used phrase-based statistical machine translation.

Machine Translation Translation

Can neural machine translation do simultaneous translation?

no code implementations7 Jun 2016 Kyunghyun Cho, Masha Esipova

We investigate the potential of attention-based neural machine translation in simultaneous translation.

Machine Translation Sentence +1

Noisy Parallel Approximate Decoding for Conditional Recurrent Language Model

no code implementations12 May 2016 Kyunghyun Cho

Recent advances in conditional recurrent language modelling have mainly focused on network architectures (e. g., attention mechanism), learning algorithms (e. g., scheduled sampling and sequence-level training) and novel applications (e. g., image/video description generation, speech recognition, etc.)

Language Modelling Machine Translation +4

A Controller-Recognizer Framework: How necessary is recognition for control?

no code implementations19 Nov 2015 Marcin Moczulski, Kelvin Xu, Aaron Courville, Kyunghyun Cho

Recently there has been growing interest in building active visual object recognizers, as opposed to the usual passive recognizers which classifies a given static image into a predefined set of object categories.

Larger-Context Language Modelling

no code implementations11 Nov 2015 Tian Wang, Kyunghyun Cho

In the experi- ments, we evaluate the proposed approach while varying the number of context sentences and observe that the proposed late fusion is superior to the usual way of incorporating additional inputs to the LSTM.

Language Modelling Sentence

First Step toward Model-Free, Anonymous Object Tracking with Recurrent Neural Networks

no code implementations19 Nov 2015 Quan Gan, Qipeng Guo, Zheng Zhang, Kyunghyun Cho

In this paper, we propose and study a novel visual object tracking approach based on convolutional networks and recurrent networks.

Object Visual Object Tracking +1

Describing Multimedia Content using Attention-based Encoder--Decoder Networks

no code implementations4 Jul 2015 Kyunghyun Cho, Aaron Courville, Yoshua Bengio

Whereas deep neural networks were first mostly used for classification tasks, they are rapidly expanding in the realm of structured output problems, where the observed target is composed of multiple random variables that have a rich joint distribution, given the input.

Caption Generation Decoder +4

Gated Feedback Recurrent Neural Networks

no code implementations9 Feb 2015 Junyoung Chung, Caglar Gulcehre, Kyunghyun Cho, Yoshua Bengio

In this work, we propose a novel recurrent neural network (RNN) architecture.

Language Modelling

On Using Monolingual Corpora in Neural Machine Translation

no code implementations11 Mar 2015 Caglar Gulcehre, Orhan Firat, Kelvin Xu, Kyunghyun Cho, Loic Barrault, Huei-Chi Lin, Fethi Bougares, Holger Schwenk, Yoshua Bengio

Recent work on end-to-end neural network-based architectures for machine translation has shown promising results for En-Fr and En-De translation.

Machine Translation Translation

Embedding Word Similarity with Neural Machine Translation

no code implementations19 Dec 2014 Felix Hill, Kyunghyun Cho, Sebastien Jean, Coline Devin, Yoshua Bengio

Here we investigate the embeddings learned by neural machine translation models, a recently-developed class of neural language model.

Language Modelling Machine Translation +2

End-to-end Continuous Speech Recognition using Attention-based Recurrent NN: First Results

no code implementations4 Dec 2014 Jan Chorowski, Dzmitry Bahdanau, Kyunghyun Cho, Yoshua Bengio

We replace the Hidden Markov Model (HMM) which is traditionally used in in continuous speech recognition with a bi-directional recurrent neural network encoder coupled to a recurrent neural network decoder that directly emits a stream of phonemes.

Decoder speech-recognition +1

Not All Neural Embeddings are Born Equal

no code implementations2 Oct 2014 Felix Hill, Kyunghyun Cho, Sebastien Jean, Coline Devin, Yoshua Bengio

Neural language models learn word representations that capture rich linguistic and conceptual information.

Machine Translation Translation

Overcoming the Curse of Sentence Length for Neural Machine Translation using Automatic Segmentation

no code implementations WS 2014 Jean Pouget-Abadie, Dzmitry Bahdanau, Bart van Merrienboer, Kyunghyun Cho, Yoshua Bengio

The authors of (Cho et al., 2014a) have shown that the recently introduced neural network translation systems suffer from a significant drop in translation quality when translating long sentences, unlike existing phrase-based translation systems.

Machine Translation Sentence +1

On the Equivalence Between Deep NADE and Generative Stochastic Networks

no code implementations2 Sep 2014 Li Yao, Sherjil Ozair, Kyunghyun Cho, Yoshua Bengio

Orderless NADEs are trained based on a criterion that stochastically maximizes $P(\mathbf{x})$ with all possible orders of factorizations.

Learned-Norm Pooling for Deep Feedforward and Recurrent Neural Networks

no code implementations7 Nov 2013 Caglar Gulcehre, Kyunghyun Cho, Razvan Pascanu, Yoshua Bengio

In this paper we propose and investigate a novel nonlinear unit, called $L_p$ unit, for deep neural networks.

Object Recognition

Classifying and Visualizing Motion Capture Sequences using Deep Neural Networks

no code implementations17 Jun 2013 Kyunghyun Cho, Xi Chen

The gesture recognition using motion capture data and depth sensors has recently drawn more attention in vision recognition.

Gesture Recognition

Exponentially Increasing the Capacity-to-Computation Ratio for Conditional Computation in Deep Learning

no code implementations28 Jun 2014 Kyunghyun Cho, Yoshua Bengio

Conditional computation has been proposed as a way to increase the capacity of a deep neural network without increasing the amount of computation required, by activating some parameters and computation "on-demand", on a per-example basis.

On the Number of Linear Regions of Deep Neural Networks

no code implementations NeurIPS 2014 Guido Montúfar, Razvan Pascanu, Kyunghyun Cho, Yoshua Bengio

We study the complexity of functions computable by deep feedforward neural networks with piecewise linear activations in terms of the symmetries and the number of linear regions that they have.

Bounding the Test Log-Likelihood of Generative Models

no code implementations24 Nov 2013 Yoshua Bengio, Li Yao, Kyunghyun Cho

Several interesting generative learning algorithms involve a complex probability distribution over many random variables, involving intractable normalization constants or latent variable normalization.

How to Construct Deep Recurrent Neural Networks

no code implementations20 Dec 2013 Razvan Pascanu, Caglar Gulcehre, Kyunghyun Cho, Yoshua Bengio

Based on this observation, we propose two novel architectures of a deep RNN which are orthogonal to an earlier attempt of stacking multiple recurrent layers to build a deep RNN (Schmidhuber, 1992; El Hihi and Bengio, 1996).

Language Modelling

Understanding Dropout: Training Multi-Layer Perceptrons with Auxiliary Independent Stochastic Neurons

no code implementations12 Jun 2013 Kyunghyun Cho

In this paper, a simple, general method of adding auxiliary stochastic neurons to a multi-layer perceptron is proposed.

Learning Distributed Representations from Reviews for Collaborative Filtering

no code implementations18 Jun 2018 Amjad Almahairi, Kyle Kastner, Kyunghyun Cho, Aaron Courville

However, interestingly, the greater modeling power offered by the recurrent neural network appears to undermine the model's ability to act as a regularizer of the product representations.

Collaborative Filtering Recommendation Systems

Meta-Learning for Low-Resource Neural Machine Translation

no code implementations EMNLP 2018 Jiatao Gu, Yong Wang, Yun Chen, Kyunghyun Cho, Victor O. K. Li

We frame low-resource translation as a meta-learning problem, and we learn to adapt to low-resource languages based on multilingual high-resource language tasks.

Low-Resource Neural Machine Translation Meta-Learning +3

Directional Analysis of Stochastic Gradient Descent via von Mises-Fisher Distributions in Deep learning

no code implementations ICLR 2019 Cheolhyoung Lee, Kyunghyun Cho, Wanmo Kang

We empirically verify our result using deep convolutional networks and observe a higher correlation between the gradient stochasticity and the proposed directional uniformity than that against the gradient norm stochasticity, suggesting that the directional statistics of minibatch gradients is a major factor behind SGD.

Backplay: 'Man muss immer umkehren'

no code implementations ICLR 2019 Cinjon Resnick, Roberta Raileanu, Sanyam Kapoor, Alexander Peysakhovich, Kyunghyun Cho, Joan Bruna

Our contributions are that we analytically characterize the types of environments where Backplay can improve training speed, demonstrate the effectiveness of Backplay both in large grid worlds and a complex four player zero-sum game (Pommerman), and show that Backplay compares favorably to other competitive methods known to improve sample efficiency.

Reinforcement Learning (RL)

Gradient-based learning for F-measure and other performance metrics

no code implementations ICLR 2019 Yu Gai, Zheng Zhang, Kyunghyun Cho

Many important classification performance metrics, e. g. $F$-measure, are non-differentiable and non-decomposable, and are thus unfriendly to gradient descent algorithm.

General Classification

Boundary Seeking GANs

no code implementations ICLR 2018 R. Devon Hjelm, Athul Paul Jacob, Adam Trischler, Gerry Che, Kyunghyun Cho, Yoshua Bengio

We introduce a method for training GANs with discrete data that uses the estimated difference measure from the discriminator to compute importance weights for generated samples, thus providing a policy gradient for training the generator.

Scene Understanding Text Generation

Simple Nearest Neighbor Policy Method for Continuous Control Tasks

no code implementations ICLR 2018 Elman Mansimov, Kyunghyun Cho

As this policy does not require any optimization, it allows us to investigate the underlying difficulty of a task without being distracted by optimization difficulty of a learning algorithm.

Continuous Control

Insertion-based Decoding with automatically Inferred Generation Order

no code implementations TACL 2019 Jiatao Gu, Qi Liu, Kyunghyun Cho

Conventional neural autoregressive decoding commonly assumes a fixed left-to-right generation order, which may be sub-optimal.

Code Generation Machine Translation +1

Context-Aware Learning for Neural Machine Translation

no code implementations12 Mar 2019 Sébastien Jean, Kyunghyun Cho

By comparing performance using actual and random contexts, we show that a model trained with the proposed algorithm is more sensitive to the additional context.

Machine Translation Translation

Task-Driven Data Verification via Gradient Descent

no code implementations14 May 2019 Siavash Golkar, Kyunghyun Cho

We introduce a novel algorithm for the detection of possible sample corruption such as mislabeled samples in a training dataset given a small clean validation set.

Sequential Graph Dependency Parser

no code implementations RANLP 2019 Sean Welleck, Kyunghyun Cho

We propose a method for non-projective dependency parsing by incrementally predicting a set of edges.

Dependency Parsing

Using local plasticity rules to train recurrent neural networks

no code implementations28 May 2019 Owen Marschall, Kyunghyun Cho, Cristina Savin

To learn useful dynamics on long time scales, neurons must use plasticity rules that account for long-term, circuit-wide effects of synaptic changes.

Improved Zero-shot Neural Machine Translation via Ignoring Spurious Correlations

no code implementations ACL 2019 Jiatao Gu, Yong Wang, Kyunghyun Cho, Victor O. K. Li

Zero-shot translation, translating between language pairs on which a Neural Machine Translation (NMT) system has never been trained, is an emergent property when training the system in multilingual settings.

Decoder Machine Translation +2

A Unified Framework of Online Learning Algorithms for Training Recurrent Neural Networks

no code implementations5 Jul 2019 Owen Marschall, Kyunghyun Cho, Cristina Savin

We present a framework for compactly summarizing many recent results in efficient and/or biologically plausible online training of recurrent neural networks (RNN).

Clustering

Can Unconditional Language Models Recover Arbitrary Sentences?

no code implementations NeurIPS 2019 Nishant Subramani, Samuel R. Bowman, Kyunghyun Cho

We then investigate the conditions under which a language model can be made to generate a sentence through the identification of a point in such a space and find that it is possible to recover arbitrary sentences nearly perfectly with language models and representations of moderate size without modifying any model parameters.

Language Modelling Sentence +2

Generating Diverse Translations with Sentence Codes

no code implementations ACL 2019 Raphael Shu, Hideki Nakayama, Kyunghyun Cho

In this work, we attempt to obtain diverse translations by using sentence codes to condition the sentence generation.

Machine Translation Sentence +1

Screening Mammogram Classification with Prior Exams

no code implementations30 Jul 2019 Jungkyu Park, Jason Phang, Yiqiu Shen, Nan Wu, S. Gene Kim, Linda Moy, Kyunghyun Cho, Krzysztof J. Geras

Radiologists typically compare a patient's most recent breast cancer screening exam to their previous ones in making informed diagnoses.

Classification General Classification

Improving localization-based approaches for breast cancer screening exam classification

no code implementations1 Aug 2019 Thibault Févry, Jason Phang, Nan Wu, S. Gene Kim, Linda Moy, Kyunghyun Cho, Krzysztof J. Geras

We trained and evaluated a localization-based deep CNN for breast cancer screening exam classification on over 200, 000 exams (over 1, 000, 000 images).

Classification General Classification

Towards Realistic Practices In Low-Resource Natural Language Processing: The Development Set

no code implementations IJCNLP 2019 Katharina Kann, Kyunghyun Cho, Samuel R. Bowman

Here, we aim to answer the following questions: Does using a development set for early stopping in the low-resource setting influence results as compared to a more realistic alternative, where the number of training epochs is tuned on development languages?

Countering Language Drift via Visual Grounding

no code implementations IJCNLP 2019 Jason Lee, Kyunghyun Cho, Douwe Kiela

Emergent multi-agent communication protocols are very different from natural language and not easily interpretable by humans.

Language Modelling Translation +1

Inducing Constituency Trees through Neural Machine Translation

no code implementations22 Sep 2019 Phu Mon Htut, Kyunghyun Cho, Samuel R. Bowman

Latent tree learning(LTL) methods learn to parse sentences using only indirect supervision from a downstream task.

Language Modelling Machine Translation +1

Analyzing the Forgetting Problem in the Pretrain-Finetuning of Dialogue Response Models

no code implementations16 Oct 2019 Tianxing He, Jun Liu, Kyunghyun Cho, Myle Ott, Bing Liu, James Glass, Fuchun Peng

We find that mix-review effectively regularizes the finetuning process, and the forgetting problem is alleviated to some extent.

Decoder Response Generation +2

Neural Unsupervised Parsing Beyond English

no code implementations WS 2019 Katharina Kann, Anhad Mohananey, Samuel R. Bowman, Kyunghyun Cho

Recently, neural network models which automatically infer syntactic structure from raw text have started to achieve promising results.

Finding Generalizable Evidence by Learning to Convince Q\&A Models

no code implementations IJCNLP 2019 Ethan Perez, Siddharth Karamcheti, Rob Fergus, Jason Weston, Douwe Kiela, Kyunghyun Cho

We propose a system that finds the strongest supporting evidence for a given answer to a question, using passage-based question-answering (QA) as a testbed.

Question Answering

Navigation-Based Candidate Expansion and Pretrained Language Models for Citation Recommendation

no code implementations23 Jan 2020 Rodrigo Nogueira, Zhiying Jiang, Kyunghyun Cho, Jimmy Lin

Citation recommendation systems for the scientific literature, to help authors find papers that should be cited, have the potential to speed up discoveries and uncover new routes for scientific exploration.

Citation Recommendation Domain Adaptation +3

The Break-Even Point on Optimization Trajectories of Deep Neural Networks

no code implementations ICLR 2020 Stanislaw Jastrzebski, Maciej Szymczak, Stanislav Fort, Devansh Arpit, Jacek Tabor, Kyunghyun Cho, Krzysztof Geras

We argue for the existence of the "break-even" point on this trajectory, beyond which the curvature of the loss surface and noise in the gradient are implicitly regularized by SGD.

Understanding the robustness of deep neural network classifiers for breast cancer screening

no code implementations23 Mar 2020 Witold Oleszkiewicz, Taro Makino, Stanisław Jastrzębski, Tomasz Trzciński, Linda Moy, Kyunghyun Cho, Laura Heacock, Krzysztof J. Geras

Deep neural networks (DNNs) show promise in breast cancer screening, but their robustness to input perturbations must be better understood before they can be clinically implemented.

Learning to Learn Morphological Inflection for Resource-Poor Languages

no code implementations28 Apr 2020 Katharina Kann, Samuel R. Bowman, Kyunghyun Cho

We propose to cast the task of morphological inflection - mapping a lemma to an indicated inflected form - for resource-poor languages as a meta-learning problem.

Cross-Lingual Transfer LEMMA +2

Compositionality and Capacity in Emergent Languages

no code implementations WS 2020 Abhinav Gupta, Cinjon Resnick, Jakob Foerster, Andrew Dai, Kyunghyun Cho

Our hypothesis is that there should be a specific range of model capacity and channel bandwidth that induces compositional structure in the resulting language and consequently encourages systematic generalization.

Open-Ended Question Answering Systematic Generalization

Generative Language-Grounded Policy in Vision-and-Language Navigation with Bayes' Rule

no code implementations ICLR 2021 Shuhei Kurita, Kyunghyun Cho

Vision-and-language navigation (VLN) is a task in which an agent is embodied in a realistic 3D environment and follows an instruction to reach the goal node.

Language Modelling Vision and Language Navigation

Reducing false-positive biopsies with deep neural networks that utilize local and global information in screening mammograms

no code implementations19 Sep 2020 Nan Wu, Zhe Huang, Yiqiu Shen, Jungkyu Park, Jason Phang, Taro Makino, S. Gene Kim, Kyunghyun Cho, Laura Heacock, Linda Moy, Krzysztof J. Geras

Breast cancer is the most common cancer in women, and hundreds of thousands of unnecessary biopsies are done around the world at a tremendous cost.

Rapidly Deploying a Neural Search Engine for the COVID-19 Open Research Dataset

no code implementations ACL 2020 Edwin Zhang, Nikhil Gupta, Rodrigo Nogueira, Kyunghyun Cho, Jimmy Lin

The Neural Covidex is a search engine that exploits the latest neural ranking architectures to provide information access to the COVID-19 Open Research Dataset (CORD-19) curated by the Allen Institute for AI.

Decision Making

Learned Equivariant Rendering without Transformation Supervision

no code implementations11 Nov 2020 Cinjon Resnick, Or Litany, Hugo Larochelle, Joan Bruna, Kyunghyun Cho

We propose a self-supervised framework to learn scene representations from video that are automatically delineated into objects and background.

A Study on the Autoregressive and non-Autoregressive Multi-label Learning

no code implementations3 Dec 2020 Elham J. Barezi, Iacer Calixto, Kyunghyun Cho, Pascale Fung

These tasks are hard because the label space is usually (i) very large, e. g. thousands or millions of labels, (ii) very sparse, i. e. very few labels apply to each input document, and (iii) highly correlated, meaning that the existence of one label changes the likelihood of predicting all other labels.

Multi-Label Learning

Self-Supervised Equivariant Scene Synthesis from Video

no code implementations1 Feb 2021 Cinjon Resnick, Or Litany, Cosmas Heiß, Hugo Larochelle, Joan Bruna, Kyunghyun Cho

We propose a self-supervised framework to learn scene representations from video that are automatically delineated into background, characters, and their animations.

Comparing Test Sets with Item Response Theory

no code implementations ACL 2021 Clara Vania, Phu Mon Htut, William Huang, Dhara Mungra, Richard Yuanzhe Pang, Jason Phang, Haokun Liu, Kyunghyun Cho, Samuel R. Bowman

Recent years have seen numerous NLP datasets introduced to evaluate the performance of fine-tuned models on natural language understanding tasks.

Natural Language Understanding

Stereo Video Reconstruction Without Explicit Depth Maps for Endoscopic Surgery

no code implementations16 Sep 2021 Annika Brundyn, Jesse Swanson, Kyunghyun Cho, Doug Kondziolka, Eric Oermann

In the first reader study, a variant of the U-Net that takes as input multiple consecutive video frames and outputs the missing view performs best.

Video Reconstruction

AAVAE: Augmentation-Augmented Variational Autoencoders

no code implementations29 Sep 2021 William Alejandro Falcon, Ananya Harsh Jha, Teddy Koker, Kyunghyun Cho

We empirically evaluate the proposed AAVAE on image classification, similar to how recent contrastive and non-contrastive learning algorithms have been evaluated.

Contrastive Learning Data Augmentation +2

Causal Scene BERT: Improving object detection by searching for challenging groups

no code implementations29 Sep 2021 Cinjon Resnick, Or Litany, Amlan Kar, Karsten Kreis, James Lucas, Kyunghyun Cho, Sanja Fidler

We verify that the prioritized groups found via intervention are challenging for the object detector and show that retraining with data collected from these groups helps inordinately compared to adding more IID data.

Autonomous Vehicles object-detection +1

Monotonic Simultaneous Translation with Chunk-wise Reordering and Refinement

no code implementations WMT (EMNLP) 2021 Hyojung Han, Seokchan Ahn, Yoonjung Choi, Insoo Chung, Sangha Kim, Kyunghyun Cho

Recent work in simultaneous machine translation is often trained with conventional full sentence translation corpora, leading to either excessive latency or necessity to anticipate as-yet-unarrived words, when dealing with a language pair whose word orders significantly differ.

Machine Translation Sentence +2

Log-Linear Reformulation of the Noisy Channel Model for Document-Level Neural Machine Translation

no code implementations EMNLP (spnlp) 2020 Sébastien Jean, Kyunghyun Cho

We seek to maximally use various data sources, such as parallel and monolingual data, to build an effective and efficient document-level translation system.

Language Modelling Machine Translation +2

AlphaD3M: Machine Learning Pipeline Synthesis

no code implementations3 Nov 2021 Iddo Drori, Yamuna Krishnamurthy, Remi Rampin, Raoni de Paula Lourenco, Jorge Piazentin Ono, Kyunghyun Cho, Claudio Silva, Juliana Freire

We introduce AlphaD3M, an automatic machine learning (AutoML) system based on meta reinforcement learning using sequence models with self play.

AutoML BIG-bench Machine Learning +3

DEEP: DEnoising Entity Pre-training for Neural Machine Translation

no code implementations ACL 2022 Junjie Hu, Hiroaki Hayashi, Kyunghyun Cho, Graham Neubig

It has been shown that machine translation models usually generate poor translations for named entities that are infrequent in the training corpus.

Denoising Multi-Task Learning +3

Causal Effect Variational Autoencoder with Uniform Treatment

no code implementations16 Nov 2021 Daniel Jiwoong Im, Kyunghyun Cho, Narges Razavian

In this paper, we introduce uniform treatment variational autoencoders (UTVAE) that are trained with uniform treatment distribution using importance sampling and show that using uniform treatment over observational treatment distribution leads to better causal inference by mitigating the distribution shift that occurs from training to test time.

Causal Inference Domain Adaptation

Learning with Reflective Likelihoods

no code implementations27 Sep 2018 Adji B. Dieng, Kyunghyun Cho, David M. Blei, Yann Lecun

Furthermore, the reflective likelihood objective prevents posterior collapse when used to train stochastic auto-encoders with amortized inference.

Attribute

Countering Language Drift via Grounding

no code implementations27 Sep 2018 Jason Lee, Kyunghyun Cho, Douwe Kiela

While reinforcement learning (RL) shows a lot of promise for natural language processing—e. g.

Language Modelling Policy Gradient Methods +3

LINDA: Unsupervised Learning to Interpolate in Natural Language Processing

no code implementations28 Dec 2021 Yekyung Kim, Seohyeong Jeong, Kyunghyun Cho

Despite the success of mixup in data augmentation, its applicability to natural language processing (NLP) tasks has been limited due to the discrete and variable-length nature of natural languages.

Data Augmentation text-classification +1

Amortized Noisy Channel Neural Machine Translation

no code implementations16 Dec 2021 Richard Yuanzhe Pang, He He, Kyunghyun Cho

For all three approaches, the generated translations fail to achieve rewards comparable to BSR, but the translation quality approximated by BLEU and BLEURT is similar to the quality of BSR-produced translations.

Imitation Learning Knowledge Distillation +4

Causal Scene BERT: Improving object detection by searching for challenging groups of data

no code implementations8 Feb 2022 Cinjon Resnick, Or Litany, Amlan Kar, Karsten Kreis, James Lucas, Kyunghyun Cho, Sanja Fidler

Our main contribution is a pseudo-automatic method to discover such groups in foresight by performing causal interventions on simulated scenes.

Autonomous Vehicles object-detection +1

Multi-segment preserving sampling for deep manifold sampler

no code implementations9 May 2022 Daniel Berenberg, Jae Hyeon Lee, Simon Kelow, Ji Won Park, Andrew Watkins, Vladimir Gligorijević, Richard Bonneau, Stephen Ra, Kyunghyun Cho

We introduce an alternative approach to this guided sampling procedure, multi-segment preserving sampling, that enables the direct inclusion of domain-specific knowledge by designating preserved and non-preserved segments along the input sequence, thereby restricting variation to only select regions.

Language Modelling

Translating Hanja Historical Documents to Contemporary Korean and English

no code implementations20 May 2022 Juhee Son, Jiho Jin, Haneul Yoo, JinYeong Bak, Kyunghyun Cho, Alice Oh

Built on top of multilingual neural machine translation, H2KE learns to translate a historical document written in Hanja, from both a full dataset of outdated Korean translation and a small dataset of more recently translated contemporary Korean and English.

Machine Translation Translation

Predicting Out-of-Domain Generalization with Neighborhood Invariance

no code implementations5 Jul 2022 Nathan Ng, Neha Hulkund, Kyunghyun Cho, Marzyeh Ghassemi

Developing and deploying machine learning models safely depends on the ability to characterize and compare their abilities to generalize to new environments.

Data Augmentation Domain Generalization +3

Towards Disentangled Speech Representations

no code implementations28 Aug 2022 Cal Peyser, Ronny Huang Andrew Rosenberg Tara N. Sainath, Michael Picheny, Kyunghyun Cho

In this paper, we construct a representation learning task based on joint modeling of ASR and TTS, and seek to learn a representation of audio that disentangles that part of the speech signal that is relevant to transcription from that part which is not.

Disentanglement

Can Current Task-oriented Dialogue Models Automate Real-world Scenarios in the Wild?

no code implementations20 Dec 2022 Sang-Woo Lee, Sungdong Kim, Donghyeon Ko, Donghoon Ham, Youngki Hong, Shin Ah Oh, Hyunhoon Jung, Wangkyo Jung, Kyunghyun Cho, Donghyun Kwak, Hyungsuk Noh, WooMyoung Park

Task-oriented dialogue (TOD) systems are mainly based on the slot-filling-based TOD (SF-TOD) framework, in which dialogues are broken down into smaller, controllable units (i. e., slots) to fulfill a specific task.

Language Modelling Position +2

Dual Learning for Large Vocabulary On-Device ASR

no code implementations11 Jan 2023 Cal Peyser, Ronny Huang, Tara Sainath, Rohit Prabhavalkar, Michael Picheny, Kyunghyun Cho

Dual learning is a paradigm for semi-supervised machine learning that seeks to leverage unsupervised data by solving two opposite tasks at once.

Unsupervised Learning of Initialization in Deep Neural Networks via Maximum Mean Discrepancy

no code implementations8 Feb 2023 Cheolhyoung Lee, Kyunghyun Cho

We first notice that each parameter configuration in the parameter space corresponds to one particular downstream task of d-way classification.

A Comparison of Semi-Supervised Learning Techniques for Streaming ASR at Scale

no code implementations19 Apr 2023 Cal Peyser, Michael Picheny, Kyunghyun Cho, Rohit Prabhavalkar, Ronny Huang, Tara Sainath

Unpaired text and audio injection have emerged as dominant methods for improving ASR performance in the absence of a large labeled corpus.

Decoder

Two Failures of Self-Consistency in the Multi-Step Reasoning of LLMs

no code implementations23 May 2023 Angelica Chen, Jason Phang, Alicia Parrish, Vishakh Padmakumar, Chen Zhao, Samuel R. Bowman, Kyunghyun Cho

Large language models (LLMs) have achieved widespread success on a variety of in-context few-shot tasks, but this success is typically evaluated via correctness rather than consistency.

valid

BOtied: Multi-objective Bayesian optimization with tied multivariate ranks

no code implementations1 Jun 2023 Ji Won Park, Nataša Tagasovska, Michael Maser, Stephen Ra, Kyunghyun Cho

At the heart of MOBO is the acquisition function, which determines the next candidate to evaluate by navigating the best compromises among the objectives.

Bayesian Optimization

Making the Most Out of the Limited Context Length: Predictive Power Varies with Clinical Note Type and Note Section

no code implementations13 Jul 2023 Hongyi Zheng, Yixin Zhu, Lavender Yao Jiang, Kyunghyun Cho, Eric Karl Oermann

Recent advances in large language models have led to renewed interest in natural language processing in healthcare using the free text of clinical notes.

Language Modelling

Leveraging Implicit Feedback from Deployment Data in Dialogue

no code implementations26 Jul 2023 Richard Yuanzhe Pang, Stephen Roller, Kyunghyun Cho, He He, Jason Weston

We study improving social conversational agents by learning from natural dialogue between users and a deployed model, without extra annotations.

Improving Joint Speech-Text Representations Without Alignment

no code implementations11 Aug 2023 Cal Peyser, Zhong Meng, Ke Hu, Rohit Prabhavalkar, Andrew Rosenberg, Tara N. Sainath, Michael Picheny, Kyunghyun Cho

The last year has seen astonishing progress in text-prompted image generation premised on the idea of a cross-modal representation space in which the text and image domains are represented jointly.

Speech Recognition

Active and Passive Causal Inference Learning

no code implementations18 Aug 2023 Daniel Jiwoong Im, Kyunghyun Cho

This paper serves as a starting point for machine learning researchers, engineers and students who are interested in but not yet familiar with causal inference.

Causal Identification Causal Inference

Blind Biological Sequence Denoising with Self-Supervised Set Learning

no code implementations4 Sep 2023 Nathan Ng, Ji Won Park, Jae Hyeon Lee, Ryan Lewis Kelly, Stephen Ra, Kyunghyun Cho

This set embedding represents the "average" of the subreads and can be decoded into a prediction of the clean sequence.

Denoising

Sudden Drops in the Loss: Syntax Acquisition, Phase Transitions, and Simplicity Bias in MLMs

no code implementations13 Sep 2023 Angelica Chen, Ravid Shwartz-Ziv, Kyunghyun Cho, Matthew L. Leavitt, Naomi Saphra

Most interpretability research in NLP focuses on understanding the behavior and features of a fully trained model.

First Tragedy, then Parse: History Repeats Itself in the New Era of Large Language Models

no code implementations8 Nov 2023 Naomi Saphra, Eve Fleisig, Kyunghyun Cho, Adam Lopez

Many NLP researchers are experiencing an existential crisis triggered by the astonishing success of ChatGPT and other systems based on large language models (LLMs).

Machine Translation

Perspectives on the State and Future of Deep Learning -- 2023

no code implementations7 Dec 2023 Micah Goldblum, Anima Anandkumar, Richard Baraniuk, Tom Goldstein, Kyunghyun Cho, Zachary C Lipton, Melanie Mitchell, Preetum Nakkiran, Max Welling, Andrew Gordon Wilson

The goal of this series is to chronicle opinions and issues in the field of machine learning as they stand today and as they change over time.

Benchmarking

Let's Go Shopping (LGS) -- Web-Scale Image-Text Dataset for Visual Concept Understanding

no code implementations9 Jan 2024 Yatong Bai, Utsav Garg, Apaar Shanker, Haoming Zhang, Samyak Parajuli, Erhan Bas, Isidora Filipovic, Amelia N. Chu, Eugenia D Fomitcheva, Elliot Branson, Aerin Kim, Somayeh Sojoudi, Kyunghyun Cho

Vision and vision-language applications of neural networks, such as image classification and captioning, rely on large-scale annotated datasets that require non-trivial data-collecting processes.

Image Captioning Image Classification +3

Hyperparameters in Continual Learning: a Reality Check

no code implementations14 Mar 2024 Sungmin Cha, Kyunghyun Cho

In the Hyperparameter Tuning phase, each algorithm is iteratively trained with different hyperparameter values to find the optimal hyperparameter values.

Class Incremental Learning Incremental Learning

HyperCLOVA X Technical Report

no code implementations2 Apr 2024 Kang Min Yoo, Jaegeun Han, Sookyo In, Heewon Jeon, Jisu Jeong, Jaewook Kang, Hyunwook Kim, Kyung-Min Kim, Munhyong Kim, Sungju Kim, Donghyun Kwak, Hanock Kwak, Se Jung Kwon, Bado Lee, Dongsoo Lee, Gichang Lee, Jooho Lee, Baeseong Park, Seongjin Shin, Joonsang Yu, Seolki Baek, Sumin Byeon, Eungsup Cho, Dooseok Choe, Jeesung Han, Youngkyun Jin, Hyein Jun, Jaeseung Jung, Chanwoong Kim, jinhong Kim, Jinuk Kim, Dokyeong Lee, Dongwook Park, Jeong Min Sohn, Sujung Han, Jiae Heo, Sungju Hong, Mina Jeon, Hyunhoon Jung, Jungeun Jung, Wangkyo Jung, Chungjoon Kim, Hyeri Kim, Jonghyun Kim, Min Young Kim, Soeun Lee, Joonhee Park, Jieun Shin, Sojin Yang, Jungsoon Yoon, Hwaran Lee, Sanghwan Bae, Jeehwan Cha, Karl Gylleus, Donghoon Ham, Mihak Hong, Youngki Hong, Yunki Hong, Dahyun Jang, Hyojun Jeon, Yujin Jeon, Yeji Jeong, Myunggeun Ji, Yeguk Jin, Chansong Jo, Shinyoung Joo, Seunghwan Jung, Adrian Jungmyung Kim, Byoung Hoon Kim, Hyomin Kim, Jungwhan Kim, Minkyoung Kim, Minseung Kim, Sungdong Kim, Yonghee Kim, Youngjun Kim, Youngkwan Kim, Donghyeon Ko, Dughyun Lee, Ha Young Lee, Jaehong Lee, Jieun Lee, Jonghyun Lee, Jongjin Lee, Min Young Lee, Yehbin Lee, Taehong Min, Yuri Min, Kiyoon Moon, Hyangnam Oh, Jaesun Park, Kyuyon Park, Younghun Park, Hanbae Seo, Seunghyun Seo, Mihyun Sim, Gyubin Son, Matt Yeo, Kyung Hoon Yeom, Wonjoon Yoo, Myungin You, Doheon Ahn, Homin Ahn, Joohee Ahn, Seongmin Ahn, Chanwoo An, Hyeryun An, Junho An, Sang-Min An, Boram Byun, Eunbin Byun, Jongho Cha, Minji Chang, Seunggyu Chang, Haesong Cho, Youngdo Cho, Dalnim Choi, Daseul Choi, Hyoseok Choi, Minseong Choi, Sangho Choi, Seongjae Choi, Wooyong Choi, Sewhan Chun, Dong Young Go, Chiheon Ham, Danbi Han, Jaemin Han, Moonyoung Hong, Sung Bum Hong, Dong-Hyun Hwang, Seongchan Hwang, Jinbae Im, Hyuk Jin Jang, Jaehyung Jang, Jaeni Jang, Sihyeon Jang, Sungwon Jang, Joonha Jeon, Daun Jeong, JoonHyun Jeong, Kyeongseok Jeong, Mini Jeong, Sol Jin, Hanbyeol Jo, Hanju Jo, Minjung Jo, Chaeyoon Jung, Hyungsik Jung, Jaeuk Jung, Ju Hwan Jung, Kwangsun Jung, Seungjae Jung, Soonwon Ka, Donghan Kang, Soyoung Kang, Taeho Kil, Areum Kim, Beomyoung Kim, Byeongwook Kim, Daehee Kim, Dong-Gyun Kim, Donggook Kim, Donghyun Kim, Euna Kim, Eunchul Kim, Geewook Kim, Gyu Ri Kim, Hanbyul Kim, Heesu Kim, Isaac Kim, Jeonghoon Kim, JiHye Kim, Joonghoon Kim, Minjae Kim, Minsub Kim, Pil Hwan Kim, Sammy Kim, Seokhun Kim, Seonghyeon Kim, Soojin Kim, Soong Kim, Soyoon Kim, Sunyoung Kim, TaeHo Kim, Wonho Kim, Yoonsik Kim, You Jin Kim, Yuri Kim, Beomseok Kwon, Ohsung Kwon, Yoo-Hwan Kwon, Anna Lee, Byungwook Lee, Changho Lee, Daun Lee, Dongjae Lee, Ha-Ram Lee, Hodong Lee, Hwiyeong Lee, Hyunmi Lee, Injae Lee, Jaeung Lee, Jeongsang Lee, Jisoo Lee, JongSoo Lee, Joongjae Lee, Juhan Lee, Jung Hyun Lee, Junghoon Lee, Junwoo Lee, Se Yun Lee, Sujin Lee, Sungjae Lee, Sungwoo Lee, Wonjae Lee, Zoo Hyun Lee, Jong Kun Lim, Kun Lim, Taemin Lim, Nuri Na, Jeongyeon Nam, Kyeong-Min Nam, Yeonseog Noh, Biro Oh, Jung-Sik Oh, Solgil Oh, Yeontaek Oh, Boyoun Park, Cheonbok Park, Dongju Park, Hyeonjin Park, Hyun Tae Park, Hyunjung Park, JiHye Park, Jooseok Park, JungHwan Park, Jungsoo Park, Miru Park, Sang Hee Park, Seunghyun Park, Soyoung Park, Taerim Park, Wonkyeong Park, Hyunjoon Ryu, Jeonghun Ryu, Nahyeon Ryu, Soonshin Seo, Suk Min Seo, Yoonjeong Shim, Kyuyong Shin, Wonkwang Shin, Hyun Sim, Woongseob Sim, Hyejin Soh, Bokyong Son, Hyunjun Son, Seulah Son, Chi-Yun Song, Chiyoung Song, Ka Yeon Song, Minchul Song, Seungmin Song, Jisung Wang, Yonggoo Yeo, Myeong Yeon Yi, Moon Bin Yim, Taehwan Yoo, Youngjoon Yoo, Sungmin Yoon, Young Jin Yoon, Hangyeol Yu, Ui Seon Yu, Xingdong Zuo, Jeongin Bae, Joungeun Bae, Hyunsoo Cho, Seonghyun Cho, Yongjin Cho, Taekyoon Choi, Yera Choi, Jiwan Chung, Zhenghui Han, Byeongho Heo, Euisuk Hong, Taebaek Hwang, Seonyeol Im, Sumin Jegal, Sumin Jeon, Yelim Jeong, Yonghyun Jeong, Can Jiang, Juyong Jiang, Jiho Jin, Ara Jo, Younghyun Jo, Hoyoun Jung, Juyoung Jung, Seunghyeong Kang, Dae Hee Kim, Ginam Kim, Hangyeol Kim, Heeseung Kim, Hyojin Kim, Hyojun Kim, Hyun-Ah Kim, Jeehye Kim, Jin-Hwa Kim, Jiseon Kim, Jonghak Kim, Jung Yoon Kim, Rak Yeong Kim, Seongjin Kim, Seoyoon Kim, Sewon Kim, Sooyoung Kim, Sukyoung Kim, Taeyong Kim, Naeun Ko, Bonseung Koo, Heeyoung Kwak, Haena Kwon, Youngjin Kwon, Boram Lee, Bruce W. Lee, Dagyeong Lee, Erin Lee, Euijin Lee, Ha Gyeong Lee, Hyojin Lee, Hyunjeong Lee, Jeeyoon Lee, Jeonghyun Lee, Jongheok Lee, Joonhyung Lee, Junhyuk Lee, Mingu Lee, Nayeon Lee, Sangkyu Lee, Se Young Lee, Seulgi Lee, Seung Jin Lee, Suhyeon Lee, Yeonjae Lee, Yesol Lee, Youngbeom Lee, Yujin Lee, Shaodong Li, Tianyu Liu, Seong-Eun Moon, Taehong Moon, Max-Lasse Nihlenramstroem, Wonseok Oh, Yuri Oh, Hongbeen Park, Hyekyung Park, Jaeho Park, Nohil Park, Sangjin Park, Jiwon Ryu, Miru Ryu, Simo Ryu, Ahreum Seo, Hee Seo, Kangdeok Seo, Jamin Shin, Seungyoun Shin, Heetae Sin, Jiangping Wang, Lei Wang, Ning Xiang, Longxiang Xiao, Jing Xu, Seonyeong Yi, Haanju Yoo, Haneul Yoo, Hwanhee Yoo, Liang Yu, Youngjae Yu, Weijie Yuan, Bo Zeng, Qian Zhou, Kyunghyun Cho, Jung-Woo Ha, Joonsuk Park, Jihyun Hwang, Hyoung Jo Kwon, Soonyong Kwon, Jungyeon Lee, Seungho Lee, Seonghyeon Lim, Hyunkyung Noh, Seungho Choi, Sang-Woo Lee, Jung Hwa Lim, Nako Sung

We introduce HyperCLOVA X, a family of large language models (LLMs) tailored to the Korean language and culture, along with competitive capabilities in English, math, and coding.

Instruction Following Machine Translation +1

Generalization Measures for Zero-Shot Cross-Lingual Transfer

no code implementations24 Apr 2024 Saksham Bassi, Duygu Ataman, Kyunghyun Cho

A model's capacity to generalize its knowledge to interpret unseen inputs with different characteristics is crucial to build robust and reliable machine learning systems.

Language Modelling Zero-Shot Cross-Lingual Transfer

Iterative Reasoning Preference Optimization

no code implementations30 Apr 2024 Richard Yuanzhe Pang, Weizhe Yuan, Kyunghyun Cho, He He, Sainbayar Sukhbaatar, Jason Weston

Iterative preference optimization methods have recently been shown to perform well for general instruction tuning tasks, but typically make little improvement on reasoning tasks (Yuan et al., 2024, Chen et al., 2024).

GSM8K Math

On Sensitivity and Robustness of Normalization Schemes to Input Distribution Shifts in Automatic MR Image Diagnosis

1 code implementation23 Jun 2023 Divyam Madaan, Daniel Sodickson, Kyunghyun Cho, Sumit Chopra

However, the image reconstruction process within the MRI pipeline, which requires the use of complex hardware and adjustment of a large number of scanner parameters, is highly susceptible to noise of various forms, resulting in arbitrary artifacts within the images.

Image Reconstruction

Learning Distributed Representations of Sentences from Unlabelled Data

1 code implementation NAACL 2016 Felix Hill, Kyunghyun Cho, Anna Korhonen

Unsupervised methods for learning distributed representations of words are ubiquitous in today's NLP research, but far less is known about the best ways to learn distributed phrase or sentence representations from unlabelled data.

Representation Learning Sentence

Multi-Turn Beam Search for Neural Dialogue Modeling

1 code implementation1 Jun 2019 Ilia Kulikov, Jason Lee, Kyunghyun Cho

We propose a novel approach for conversation-level inference by explicitly modeling the dialogue partner and running beam search across multiple conversation turns.

Learning Non-Monotonic Automatic Post-Editing of Translations from Human Orderings

1 code implementation EAMT 2020 António Góis, Kyunghyun Cho, André Martins

Recent research in neural machine translation has explored flexible generation orders, as an alternative to left-to-right generation.

Automatic Post-Editing Translation

Improving Conversational Question Answering Systems after Deployment using Feedback-Weighted Learning

1 code implementation COLING 2020 Jon Ander Campos, Kyunghyun Cho, Arantxa Otegi, Aitor Soroa, Gorka Azkune, Eneko Agirre

The interaction of conversational systems with users poses an exciting opportunity for improving them after deployment, but little evidence has been provided of its feasibility.

Conversational Question Answering Document Classification

Mode recovery in neural autoregressive sequence modeling

1 code implementation ACL (spnlp) 2021 Ilia Kulikov, Sean Welleck, Kyunghyun Cho

We propose to study these phenomena by investigating how the modes, or local maxima, of a distribution are maintained throughout the full learning chain of the ground-truth, empirical, learned and decoding-induced distributions, via the newly proposed mode recovery cost.

Language Model Classifier Aligns Better with Physician Word Sensitivity than XGBoost on Readmission Prediction

1 code implementation13 Nov 2022 Grace Yang, Ming Cao, Lavender Y. Jiang, Xujin C. Liu, Alexander T. M. Cheung, Hannah Weiss, David Kurland, Kyunghyun Cho, Eric K. Oermann

We assess the sensitivity score on a set of representative words in the test set using two classifiers trained for hospital readmission classification with similar performance statistics.

Decision Making Language Modelling +1

Consistency of a Recurrent Language Model With Respect to Incomplete Decoding

1 code implementation EMNLP 2020 Sean Welleck, Ilia Kulikov, Jaedeok Kim, Richard Yuanzhe Pang, Kyunghyun Cho

Despite strong performance on a variety of tasks, neural sequence models trained with maximum likelihood have been shown to exhibit issues such as length bias and degenerate repetition.

Language Modelling

Generative multitask learning mitigates target-causing confounding

2 code implementations8 Feb 2022 Taro Makino, Krzysztof J. Geras, Kyunghyun Cho

We propose generative multitask learning (GMTL), a simple and scalable approach to causal representation learning for multitask learning.

Out-of-Distribution Generalization Representation Learning

Latent State Models of Training Dynamics

1 code implementation18 Aug 2023 Michael Y. Hu, Angelica Chen, Naomi Saphra, Kyunghyun Cho

We use the HMM representation to study phase transitions and identify latent "detour" states that slow down convergence.

Image Classification Language Modelling +1

Strawman: an Ensemble of Deep Bag-of-Ngrams for Sentiment Analysis

1 code implementation WS 2017 Kyunghyun Cho

This paper describes a builder entry, named "strawman", to the sentence-level sentiment analysis task of the "Build It, Break It" shared task of the First Workshop on Building Linguistically Generalizable NLP Systems.

Sentence Sentiment Analysis

Trainable Greedy Decoding for Neural Machine Translation

1 code implementation EMNLP 2017 Jiatao Gu, Kyunghyun Cho, Victor O. K. Li

Instead of trying to build a new decoding algorithm for any specific decoding objective, we propose the idea of trainable decoding algorithm in which we train a decoding algorithm to find a translation that maximizes an arbitrary decoding objective.

Decoder Machine Translation +1

Continual Learning via Neural Pruning

1 code implementation11 Mar 2019 Siavash Golkar, Michael Kagan, Kyunghyun Cho

We introduce Continual Learning via Neural Pruning (CLNP), a new method aimed at lifelong learning in fixed capacity models based on neuronal model sparsification.

Continual Learning

Iterative Refinement of the Approximate Posterior for Directed Belief Networks

1 code implementation NeurIPS 2016 R. Devon Hjelm, Kyunghyun Cho, Junyoung Chung, Russ Salakhutdinov, Vince Calhoun, Nebojsa Jojic

Variational methods that rely on a recognition network to approximate the posterior of directed graphical models offer better inference and learning than previous methods.

Backplay: "Man muss immer umkehren"

1 code implementation18 Jul 2018 Cinjon Resnick, Roberta Raileanu, Sanyam Kapoor, Alexander Peysakhovich, Kyunghyun Cho, Joan Bruna

Our contributions are that we analytically characterize the types of environments where Backplay can improve training speed, demonstrate the effectiveness of Backplay both in large grid worlds and a complex four player zero-sum game (Pommerman), and show that Backplay compares favorably to other competitive methods known to improve sample efficiency.

Reinforcement Learning (RL)

Characterizing and addressing the issue of oversmoothing in neural autoregressive sequence modeling

1 code implementation16 Dec 2021 Ilia Kulikov, Maksim Eremeev, Kyunghyun Cho

From these observations, we conclude that the high degree of oversmoothing is the main reason behind the degenerate case of overly probable short sequences in a neural autoregressive model.

Machine Translation Translation

An Empirical Study on Few-shot Knowledge Probing for Pretrained Language Models

1 code implementation6 Sep 2021 Tianxing He, Kyunghyun Cho, James Glass

Prompt-based knowledge probing for 1-hop relations has been used to measure how much world knowledge is stored in pretrained language models.

Knowledge Probing Prompt Engineering +1

A Non-monotonic Self-terminating Language Model

1 code implementation3 Oct 2022 Eugene Choi, Kyunghyun Cho, Cheolhyoung Lee

We then propose a non-monotonic self-terminating language model, which significantly relaxes the constraint of monotonically increasing termination probability in the originally proposed self-terminating language model by Welleck et al. (2020), to address the issue of non-terminating sequences when using incomplete probable decoding algorithms.

Language Modelling Text Generation

Online hyperparameter optimization by real-time recurrent learning

1 code implementation15 Feb 2021 Daniel Jiwoong Im, Cristina Savin, Kyunghyun Cho

Conventional hyperparameter optimization methods are computationally intensive and hard to generalize to scenarios that require dynamically adapting hyperparameters, such as life-long learning.

Hyperparameter Optimization

Protein Discovery with Discrete Walk-Jump Sampling

1 code implementation8 Jun 2023 Nathan C. Frey, Daniel Berenberg, Karina Zadorozhny, Joseph Kleinhenz, Julien Lafrance-Vanasse, Isidro Hotzel, Yan Wu, Stephen Ra, Richard Bonneau, Kyunghyun Cho, Andreas Loukas, Vladimir Gligorijevic, Saeed Saremi

We resolve difficulties in training and sampling from a discrete generative model by learning a smoothed energy function, sampling from the smoothed data manifold with Langevin Markov chain Monte Carlo (MCMC), and projecting back to the true data manifold with one-step denoising.

Denoising

Jump to better conclusions: SCAN both left and right

1 code implementation WS 2018 Jasmijn Bastings, Marco Baroni, Jason Weston, Kyunghyun Cho, Douwe Kiela

Lake and Baroni (2018) recently introduced the SCAN data set, which consists of simple commands paired with action sequences and is intended to test the strong generalization abilities of recurrent sequence-to-sequence models.

MLE-guided parameter search for task loss minimization in neural sequence modeling

1 code implementation4 Jun 2020 Sean Welleck, Kyunghyun Cho

Typical approaches to directly optimizing the task loss such as policy gradient and minimum risk training are based around sampling in the sequence space to obtain candidate update directions that are scored based on the loss of a single sequence.

Machine Translation

Iterative Refinement in the Continuous Space for Non-Autoregressive Neural Machine Translation

1 code implementation EMNLP 2020 Jason Lee, Raphael Shu, Kyunghyun Cho

Given a continuous latent variable model for machine translation (Shu et al., 2020), we train an inference network to approximate the gradient of the marginal log probability of the target sentence, using only the latent variable as input.

Machine Translation Sentence +1

HUE: Pretrained Model and Dataset for Understanding Hanja Documents of Ancient Korea

1 code implementation Findings (NAACL) 2022 Haneul Yoo, Jiho Jin, Juhee Son, JinYeong Bak, Kyunghyun Cho, Alice Oh

Historical records in Korea before the 20th century were primarily written in Hanja, an extinct language based on Chinese characters and not understood by modern Korean or Chinese speakers.

named-entity-recognition Named Entity Recognition +3

Towards Understanding and Improving GFlowNet Training

1 code implementation11 May 2023 Max W. Shen, Emmanuel Bengio, Ehsan Hajiramezanali, Andreas Loukas, Kyunghyun Cho, Tommaso Biancalani

We investigate how to learn better flows, and propose (i) prioritized replay training of high-reward $x$, (ii) relative edge flow policy parametrization, and (iii) a novel guided trajectory balance objective, and show how it can solve a substructure credit assignment problem.

Show Your Work with Confidence: Confidence Bands for Tuning Curves

1 code implementation16 Nov 2023 Nicholas Lourie, Kyunghyun Cho, He He

We present the first method to construct valid confidence bands for tuning curves.

Context-Dependent Word Representation for Neural Machine Translation

1 code implementation3 Jul 2016 Heeyoul Choi, Kyunghyun Cho, Yoshua Bengio

Based on this observation, in this paper we propose to contextualize the word embedding vectors using a nonlinear bag-of-words representation of the source sentence.

Decoder Machine Translation +2

Linear Connectivity Reveals Generalization Strategies

1 code implementation24 May 2022 Jeevesh Juneja, Rachit Bansal, Kyunghyun Cho, João Sedoc, Naomi Saphra

It is widely accepted in the mode connectivity literature that when two neural networks are trained similarly on the same data, they are connected by a path through parameter space over which test set accuracy is maintained.

CoLA QQP +1

Joint Embedding Predictive Architectures Focus on Slow Features

1 code implementation20 Nov 2022 Vlad Sobal, Jyothir S V, Siddhartha Jalagam, Nicolas Carion, Kyunghyun Cho, Yann Lecun

Many common methods for learning a world model for pixel-based environments use generative architectures trained with pixel-level reconstruction objectives.

On the Blind Spots of Model-Based Evaluation Metrics for Text Generation

1 code implementation20 Dec 2022 Tianxing He, Jingyu Zhang, Tianle Wang, Sachin Kumar, Kyunghyun Cho, James Glass, Yulia Tsvetkov

In this work, we explore a useful but often neglected methodology for robustness analysis of text generation evaluation metrics: stress tests with synthetic data.

Text Generation

Rapidly Deploying a Neural Search Engine for the COVID-19 Open Research Dataset: Preliminary Thoughts and Lessons Learned

1 code implementation10 Apr 2020 Edwin Zhang, Nikhil Gupta, Rodrigo Nogueira, Kyunghyun Cho, Jimmy Lin

We present the Neural Covidex, a search engine that exploits the latest neural ranking architectures to provide information access to the COVID-19 Open Research Dataset curated by the Allen Institute for AI.

Decision Making

Emergent Linguistic Phenomena in Multi-Agent Communication Games

1 code implementation IJCNLP 2019 Laura Graesser, Kyunghyun Cho, Douwe Kiela

In this work, we propose a computational framework in which agents equipped with communication capabilities simultaneously play a series of referential games, where agents are trained using deep reinforcement learning.

Reinforcement Learning (RL)

The Future is not One-dimensional: Complex Event Schema Induction by Graph Modeling for Event Prediction

1 code implementation EMNLP 2021 Manling Li, Sha Li, Zhenhailong Wang, Lifu Huang, Kyunghyun Cho, Heng Ji, Jiawei Han, Clare Voss

We introduce a new concept of Temporal Complex Event Schema: a graph-based schema representation that encompasses events, arguments, temporal connections and argument relations.

Characterizing and overcoming the greedy nature of learning in multi-modal deep neural networks

1 code implementation10 Feb 2022 Nan Wu, Stanisław Jastrzębski, Kyunghyun Cho, Krzysztof J. Geras

We propose an algorithm to balance the conditional learning speeds between modalities during training and demonstrate that it indeed addresses the issue of greedy learning.

Gated Word-Character Recurrent Language Model

2 code implementations EMNLP 2016 Yasumasa Miyamoto, Kyunghyun Cho

We introduce a recurrent neural network language model (RNN-LM) with long short-term memory (LSTM) units that utilizes both character-level and word-level inputs.

Language Modelling

Iterative Neural Autoregressive Distribution Estimator (NADE-k)

1 code implementation5 Jun 2014 Tapani Raiko, Li Yao, Kyunghyun Cho, Yoshua Bengio

Training of the neural autoregressive density estimator (NADE) can be viewed as doing one step of probabilistic inference on missing values in data.

Density Estimation Image Generation +1

Iterative Neural Autoregressive Distribution Estimator NADE-k

1 code implementation NeurIPS 2014 Tapani Raiko, Yao Li, Kyunghyun Cho, Yoshua Bengio

Training of the neural autoregressive density estimator (NADE) can be viewed as doing one step of probabilistic inference on missing values in data.

Density Estimation Image Generation +1

Advancing GraphSAGE with A Data-Driven Node Sampling

1 code implementation29 Apr 2019 Jihun Oh, Kyunghyun Cho, Joan Bruna

As an efficient and scalable graph neural network, GraphSAGE has enabled an inductive capability for inferring unseen nodes or graphs by aggregating subsampled local neighborhoods and by learning in a mini-batch gradient descent fashion.

General Classification Node Classification

Finding Generalizable Evidence by Learning to Convince Q&A Models

1 code implementation12 Sep 2019 Ethan Perez, Siddharth Karamcheti, Rob Fergus, Jason Weston, Douwe Kiela, Kyunghyun Cho

We propose a system that finds the strongest supporting evidence for a given answer to a question, using passage-based question-answering (QA) as a testbed.

Question Answering

Identifying and attacking the saddle point problem in high-dimensional non-convex optimization

4 code implementations NeurIPS 2014 Yann Dauphin, Razvan Pascanu, Caglar Gulcehre, Kyunghyun Cho, Surya Ganguli, Yoshua Bengio

Gradient descent or quasi-Newton methods are almost ubiquitously used to perform such minimizations, and it is often thought that a main source of difficulty for these local methods to find the global minimum is the proliferation of local minima with much higher error than the global minimum.

A Generalized Framework of Sequence Generation with Application to Undirected Sequence Models

1 code implementation29 May 2019 Elman Mansimov, Alex Wang, Sean Welleck, Kyunghyun Cho

We investigate this problem by proposing a generalized model of sequence generation that unifies decoding in directed and undirected models.

Machine Translation Natural Language Inference +3

A Comparison of Audio Signal Preprocessing Methods for Deep Neural Networks on Music Tagging

1 code implementation6 Sep 2017 Keunwoo Choi, György Fazekas, Kyunghyun Cho, Mark Sandler

In this paper, we empirically investigate the effect of audio preprocessing on music tagging with deep neural networks.

Music Tagging

Dynamics-aware Embeddings

2 code implementations ICLR 2020 William Whitney, Rajat Agarwal, Kyunghyun Cho, Abhinav Gupta

In this paper we consider self-supervised representation learning to improve sample efficiency in reinforcement learning (RL).

Continuous Control reinforcement-learning +2

QCD-Aware Recursive Neural Networks for Jet Physics

5 code implementations2 Feb 2017 Gilles Louppe, Kyunghyun Cho, Cyril Becot, Kyle Cranmer

Recent progress in applying machine learning for jet physics has been built upon an analogy between calorimeters and images.

Clustering Sentence

Grammar Induction with Neural Language Models: An Unusual Replication

1 code implementation EMNLP (ACL) 2018 Phu Mon Htut, Kyunghyun Cho, Samuel R. Bowman

A substantial thread of recent work on latent tree learning has attempted to develop neural network models with parse-valued latent variables and train them on non-parsing tasks, in the hope of having them discover interpretable tree structure.

Constituency Parsing Language Modelling

AASAE: Augmentation-Augmented Stochastic Autoencoders

1 code implementation26 Jul 2021 William Falcon, Ananya Harsh Jha, Teddy Koker, Kyunghyun Cho

We empirically evaluate the proposed AASAE on image classification, similar to how recent contrastive and non-contrastive learning algorithms have been evaluated.

Contrastive Learning Data Augmentation +2

Conditional molecular design with deep generative models

4 code implementations30 Apr 2018 Seokho Kang, Kyunghyun Cho

Although machine learning has been successfully used to propose novel molecules that satisfy desired properties, it is still challenging to explore a large chemical space efficiently.

Property Prediction

Emergent Communication in a Multi-Modal, Multi-Step Referential Game

1 code implementation ICLR 2018 Katrina Evtimova, Andrew Drozdov, Douwe Kiela, Kyunghyun Cho

Inspired by previous work on emergent communication in referential games, we propose a novel multi-modal, multi-step referential game, where the sender and receiver have access to distinct modalities of an object, and their information exchange is bidirectional and of arbitrary duration.

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