Search Results for author: Kyunghyun Cho

Found 274 papers, 134 papers with code

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.

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

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

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

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.

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

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.

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 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.

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 Properties of Neural Machine Translation: Encoder-Decoder Approaches

2 code implementations3 Sep 2014 Kyunghyun Cho, Bart van Merrienboer, Dzmitry Bahdanau, Yoshua Bengio

In this paper, we focus on analyzing the properties of the neural machine translation using two models; RNN Encoder--Decoder and a newly proposed gated recursive convolutional neural network.

Machine Translation Sentence +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

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

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.

speech-recognition Speech Recognition

On Using Very Large Target Vocabulary for Neural Machine Translation

1 code implementation IJCNLP 2015 Sébastien Jean, Kyunghyun Cho, Roland Memisevic, Yoshua Bengio

The models trained by the proposed approach are empirically found to outperform the baseline models with a small vocabulary as well as the LSTM-based neural machine translation models.

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

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

Show, Attend and Tell: Neural Image Caption Generation with Visual Attention

88 code implementations10 Feb 2015 Kelvin Xu, Jimmy Ba, Ryan Kiros, Kyunghyun Cho, Aaron Courville, Ruslan Salakhutdinov, Richard Zemel, Yoshua Bengio

Inspired by recent work in machine translation and object detection, we introduce an attention based model that automatically learns to describe the content of images.

Caption Generation Image Captioning +1

Describing Videos by Exploiting Temporal Structure

5 code implementations ICCV 2015 Li Yao, Atousa Torabi, Kyunghyun Cho, Nicolas Ballas, Christopher Pal, Hugo Larochelle, Aaron Courville

In this context, we propose an approach that successfully takes into account both the local and global temporal structure of videos to produce descriptions.

Action Recognition Temporal Action Localization +1

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

Learning to Understand Phrases by Embedding the Dictionary

2 code implementations TACL 2016 Felix Hill, Kyunghyun Cho, Anna Korhonen, Yoshua Bengio

Distributional models that learn rich semantic word representations are a success story of recent NLP research.

General Knowledge

Attention-Based Models for Speech Recognition

14 code implementations NeurIPS 2015 Jan Chorowski, Dzmitry Bahdanau, Dmitriy Serdyuk, Kyunghyun Cho, Yoshua Bengio

Recurrent sequence generators conditioned on input data through an attention mechanism have recently shown very good performance on a range of tasks in- cluding machine translation, handwriting synthesis and image caption gen- eration.

Machine Translation Speech Recognition +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 Machine Translation +3

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

Oracle performance for visual captioning

1 code implementation14 Nov 2015 Li Yao, Nicolas Ballas, Kyunghyun Cho, John R. Smith, Yoshua Bengio

The task of associating images and videos with a natural language description has attracted a great amount of attention recently.

Image Captioning Language Modelling +1

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.

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.

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

Natural Language Understanding with Distributed Representation

1 code implementation24 Nov 2015 Kyunghyun Cho

This is a lecture note for the course DS-GA 3001 <Natural Language Understanding with Distributed Representation> at the Center for Data Science , New York University in Fall, 2015.

Language Modelling Machine Translation +2

End-to-End Goal-Driven Web Navigation

1 code implementation NeurIPS 2016 Rodrigo Nogueira, Kyunghyun Cho

We propose a goal-driven web navigation as a benchmark task for evaluating an agent with abilities to understand natural language and plan on partially observed environments.

Decision Making Question Answering

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

A Character-Level Decoder without Explicit Segmentation for Neural Machine Translation

2 code implementations ACL 2016 Junyoung Chung, Kyunghyun Cho, Yoshua Bengio

The existing machine translation systems, whether phrase-based or neural, have relied almost exclusively on word-level modelling with explicit segmentation.

Machine Translation Segmentation +1

Theano: A Python framework for fast computation of mathematical expressions

1 code implementation9 May 2016 The Theano Development Team, Rami Al-Rfou, Guillaume Alain, Amjad Almahairi, Christof Angermueller, Dzmitry Bahdanau, Nicolas Ballas, Frédéric Bastien, Justin Bayer, Anatoly Belikov, Alexander Belopolsky, Yoshua Bengio, Arnaud Bergeron, James Bergstra, Valentin Bisson, Josh Bleecher Snyder, Nicolas Bouchard, Nicolas Boulanger-Lewandowski, Xavier Bouthillier, Alexandre de Brébisson, Olivier Breuleux, Pierre-Luc Carrier, Kyunghyun Cho, Jan Chorowski, Paul Christiano, Tim Cooijmans, Marc-Alexandre Côté, Myriam Côté, Aaron Courville, Yann N. Dauphin, Olivier Delalleau, Julien Demouth, Guillaume Desjardins, Sander Dieleman, Laurent Dinh, Mélanie Ducoffe, Vincent Dumoulin, Samira Ebrahimi Kahou, Dumitru Erhan, Ziye Fan, Orhan Firat, Mathieu Germain, Xavier Glorot, Ian Goodfellow, Matt Graham, Caglar Gulcehre, Philippe Hamel, Iban Harlouchet, Jean-Philippe Heng, Balázs Hidasi, Sina Honari, Arjun Jain, Sébastien Jean, Kai Jia, Mikhail Korobov, Vivek Kulkarni, Alex Lamb, Pascal Lamblin, Eric Larsen, César Laurent, Sean Lee, Simon Lefrancois, Simon Lemieux, Nicholas Léonard, Zhouhan Lin, Jesse A. Livezey, Cory Lorenz, Jeremiah Lowin, Qianli Ma, Pierre-Antoine Manzagol, Olivier Mastropietro, Robert T. McGibbon, Roland Memisevic, Bart van Merriënboer, Vincent Michalski, Mehdi Mirza, Alberto Orlandi, Christopher Pal, Razvan Pascanu, Mohammad Pezeshki, Colin Raffel, Daniel Renshaw, Matthew Rocklin, Adriana Romero, Markus Roth, Peter Sadowski, John Salvatier, François Savard, Jan Schlüter, John Schulman, Gabriel Schwartz, Iulian Vlad Serban, Dmitriy Serdyuk, Samira Shabanian, Étienne Simon, Sigurd Spieckermann, S. Ramana Subramanyam, Jakub Sygnowski, Jérémie Tanguay, Gijs van Tulder, Joseph Turian, Sebastian Urban, Pascal Vincent, Francesco Visin, Harm de Vries, David Warde-Farley, Dustin J. Webb, Matthew Willson, Kelvin Xu, Lijun Xue, Li Yao, Saizheng Zhang, Ying Zhang

Since its introduction, it has been one of the most used CPU and GPU mathematical compilers - especially in the machine learning community - and has shown steady performance improvements.

BIG-bench Machine Learning Clustering +2

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

Query-Efficient Imitation Learning for End-to-End Autonomous Driving

1 code implementation20 May 2016 Jiakai Zhang, Kyunghyun Cho

A policy function trained in this way however is known to suffer from unexpected behaviours due to the mismatch between the states reachable by the reference policy and trained policy functions.

Autonomous Driving Car Racing +1

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

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

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

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

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).

Transliteration

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

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.

Machine Translation Sentence +1

Fully Character-Level Neural Machine Translation without Explicit Segmentation

2 code implementations TACL 2017 Jason Lee, Kyunghyun Cho, Thomas Hofmann

We observe that on CS-EN, FI-EN and RU-EN, the quality of the multilingual character-level translation even surpasses the models specifically trained on that language pair alone, both in terms of BLEU score and human judgment.

Machine Translation NMT +1

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

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

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

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.

Machine Translation Translation

Boundary-Seeking Generative Adversarial Networks

6 code implementations27 Feb 2017 R. Devon Hjelm, Athul Paul Jacob, Tong Che, Adam Trischler, 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

Transfer learning for music classification and regression tasks

3 code implementations27 Mar 2017 Keunwoo Choi, György Fazekas, Mark Sandler, Kyunghyun Cho

In this paper, we present a transfer learning approach for music classification and regression tasks.

Classification General Classification +4

Task-Oriented Query Reformulation with Reinforcement Learning

2 code implementations EMNLP 2017 Rodrigo Nogueira, Kyunghyun Cho

In this work, we introduce a query reformulation system based on a neural network that rewrites a query to maximize the number of relevant documents returned.

reinforcement-learning Reinforcement Learning (RL)

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

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

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.

Zero-Shot Transfer Learning for Event Extraction

1 code implementation ACL 2018 Lifu Huang, Heng Ji, Kyunghyun Cho, Clare R. Voss

Most previous event extraction studies have relied heavily on features derived from annotated event mentions, thus cannot be applied to new event types without annotation effort.

Event Extraction Transfer Learning

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

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

A Tutorial on Deep Learning for Music Information Retrieval

2 code implementations13 Sep 2017 Keunwoo Choi, György Fazekas, Kyunghyun Cho, Mark Sandler

Following their success in Computer Vision and other areas, deep learning techniques have recently become widely adopted in Music Information Retrieval (MIR) research.

Information Retrieval Music Information Retrieval +2

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.

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

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

Unsupervised Neural Machine Translation

2 code implementations ICLR 2018 Mikel Artetxe, Gorka Labaka, Eneko Agirre, Kyunghyun Cho

In spite of the recent success of neural machine translation (NMT) in standard benchmarks, the lack of large parallel corpora poses a major practical problem for many language pairs.

NMT Translation +1

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)

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

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

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

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

Dynamic Meta-Embeddings for Improved Sentence Representations

3 code implementations EMNLP 2018 Douwe Kiela, Changhan Wang, Kyunghyun Cho

While one of the first steps in many NLP systems is selecting what pre-trained word embeddings to use, we argue that such a step is better left for neural networks to figure out by themselves.

Sentence Word Embeddings

A Stable and Effective Learning Strategy for Trainable Greedy Decoding

1 code implementation EMNLP 2018 Yun Chen, Victor O. K. Li, Kyunghyun Cho, Samuel R. Bowman

Beam search is a widely used approximate search strategy for neural network decoders, and it generally outperforms simple greedy decoding on tasks like machine translation.

Machine Translation Translation

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

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

Classifier-agnostic saliency map extraction

1 code implementation ICLR 2019 Konrad Zolna, Krzysztof J. Geras, Kyunghyun Cho

To address this problem, we propose classifier-agnostic saliency map extraction, which finds all parts of the image that any classifier could use, not just one given in advance.

General Classification

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

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)

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

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

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.

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

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.

Passage Re-ranking with BERT

6 code implementations13 Jan 2019 Rodrigo Nogueira, Kyunghyun Cho

Recently, neural models pretrained on a language modeling task, such as ELMo (Peters et al., 2017), OpenAI GPT (Radford et al., 2018), and BERT (Devlin et al., 2018), have achieved impressive results on various natural language processing tasks such as question-answering and natural language inference.

Ranked #3 on Passage Re-Ranking on MS MARCO (using extra training data)

Passage Re-Ranking Passage Retrieval +2

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)

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

Non-Monotonic Sequential Text Generation

1 code implementation WS 2019 Sean Welleck, Kianté Brantley, Hal Daumé III, Kyunghyun Cho

Standard sequential generation methods assume a pre-specified generation order, such as text generation methods which generate words from left to right.

Imitation Learning Position +1

Augmentation for small object detection

5 code implementations19 Feb 2019 Mate Kisantal, Zbigniew Wojna, Jakub Murawski, Jacek Naruniec, Kyunghyun Cho

We evaluate different pasting augmentation strategies, and ultimately, we achieve 9. 7\% relative improvement on the instance segmentation and 7. 1\% on the object detection of small objects, compared to the current state of the art method on

Instance Segmentation Object +3

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

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

Molecular geometry prediction using a deep generative graph neural network

1 code implementation31 Mar 2019 Elman Mansimov, Omar Mahmood, Seokho Kang, Kyunghyun Cho

Conventional conformation generation methods minimize hand-designed molecular force field energy functions that are often not well correlated with the true energy function of a molecule observed in nature.

Document Expansion by Query Prediction

5 code implementations17 Apr 2019 Rodrigo Nogueira, Wei Yang, Jimmy Lin, Kyunghyun Cho

One technique to improve the retrieval effectiveness of a search engine is to expand documents with terms that are related or representative of the documents' content. From the perspective of a question answering system, this might comprise questions the document can potentially answer.

Passage Re-Ranking Question Answering +2

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

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

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)

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.

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

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.

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.

Machine Translation NMT +1

Deep Unsupervised Drum Transcription

2 code implementations9 Jun 2019 Keunwoo Choi, Kyunghyun Cho

We introduce DrummerNet, a drum transcription system that is trained in an unsupervised manner.

Sound Audio and Speech Processing

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

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

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

Neural Text Generation with Unlikelihood Training

5 code implementations ICLR 2020 Sean Welleck, Ilia Kulikov, Stephen Roller, Emily Dinan, Kyunghyun Cho, Jason Weston

Neural text generation is a key tool in natural language applications, but it is well known there are major problems at its core.

Blocking Text Generation

Latent-Variable Non-Autoregressive Neural Machine Translation with Deterministic Inference Using a Delta Posterior

1 code implementation20 Aug 2019 Raphael Shu, Jason Lee, Hideki Nakayama, Kyunghyun Cho

By decoding multiple initial latent variables in parallel and rescore using a teacher model, the proposed model further brings the gap down to 1. 0 BLEU point on WMT'14 En-De task with 6. 8x speedup.

Machine Translation Translation

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

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?

Neural Machine Translation with Byte-Level Subwords

1 code implementation7 Sep 2019 Changhan Wang, Kyunghyun Cho, Jiatao Gu

Representing text at the level of bytes and using the 256 byte set as vocabulary is a potential solution to this issue.

Machine Translation Translation

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

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

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

Mixout: Effective Regularization to Finetune Large-scale Pretrained Language Models

2 code implementations ICLR 2020 Cheolhyoung Lee, Kyunghyun Cho, Wanmo Kang

We empirically evaluate the proposed mixout and its variants on finetuning a pretrained language model on downstream tasks.

Language Modelling

Generalized Inner Loop Meta-Learning

3 code implementations3 Oct 2019 Edward Grefenstette, Brandon Amos, Denis Yarats, Phu Mon Htut, Artem Molchanov, Franziska Meier, Douwe Kiela, Kyunghyun Cho, Soumith Chintala

Many (but not all) approaches self-qualifying as "meta-learning" in deep learning and reinforcement learning fit a common pattern of approximating the solution to a nested optimization problem.

Meta-Learning reinforcement-learning +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.

Response Generation Text Generation +1

Multi-Stage Document Ranking with BERT

2 code implementations31 Oct 2019 Rodrigo Nogueira, Wei Yang, Kyunghyun Cho, Jimmy Lin

The advent of deep neural networks pre-trained via language modeling tasks has spurred a number of successful applications in natural language processing.

Document Ranking Language Modelling

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

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.

Don't Say That! Making Inconsistent Dialogue Unlikely with Unlikelihood Training

1 code implementation ACL 2020 Margaret Li, Stephen Roller, Ilia Kulikov, Sean Welleck, Y-Lan Boureau, Kyunghyun Cho, Jason Weston

Generative dialogue models currently suffer from a number of problems which standard maximum likelihood training does not address.

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

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

On the Discrepancy between Density Estimation and Sequence Generation

1 code implementation EMNLP (spnlp) 2020 Jason Lee, Dustin Tran, Orhan Firat, Kyunghyun Cho

In this paper, by comparing several density estimators on five machine translation tasks, we find that the correlation between rankings of models based on log-likelihood and BLEU varies significantly depending on the range of the model families being compared.

Density Estimation Machine Translation +2

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.

Unsupervised Question Decomposition for Question Answering

2 code implementations EMNLP 2020 Ethan Perez, Patrick Lewis, Wen-tau Yih, Kyunghyun Cho, Douwe Kiela

We aim to improve question answering (QA) by decomposing hard questions into simpler sub-questions that existing QA systems are capable of answering.

Question Answering

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.

Asking and Answering Questions to Evaluate the Factual Consistency of Summaries

2 code implementations ACL 2020 Alex Wang, Kyunghyun Cho, Mike Lewis

QAGS is based on the intuition that if we ask questions about a summary and its source, we will receive similar answers if the summary is factually consistent with the source.

Abstractive Text Summarization

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

Rapidly Bootstrapping a Question Answering Dataset for COVID-19

1 code implementation23 Apr 2020 Raphael Tang, Rodrigo Nogueira, Edwin Zhang, Nikhil Gupta, Phuong Cam, Kyunghyun Cho, Jimmy Lin

We present CovidQA, the beginnings of a question answering dataset specifically designed for COVID-19, built by hand from knowledge gathered from Kaggle's COVID-19 Open Research Dataset Challenge.

Question Answering

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

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

AdapterFusion: Non-Destructive Task Composition for Transfer Learning

3 code implementations EACL 2021 Jonas Pfeiffer, Aishwarya Kamath, Andreas Rücklé, Kyunghyun Cho, Iryna Gurevych

We show that by separating the two stages, i. e., knowledge extraction and knowledge composition, the classifier can effectively exploit the representations learned from multiple tasks in a non-destructive manner.

Language Modelling Multi-Task Learning

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

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

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

Covidex: Neural Ranking Models and Keyword Search Infrastructure for the COVID-19 Open Research Dataset

1 code implementation EMNLP (sdp) 2020 Edwin Zhang, Nikhil Gupta, Raphael Tang, Xiao Han, Ronak Pradeep, Kuang Lu, Yue Zhang, Rodrigo Nogueira, Kyunghyun Cho, Hui Fang, Jimmy Lin

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

AdapterHub: A Framework for Adapting Transformers

8 code implementations EMNLP 2020 Jonas Pfeiffer, Andreas Rücklé, Clifton Poth, Aishwarya Kamath, Ivan Vulić, Sebastian Ruder, Kyunghyun Cho, Iryna Gurevych

We propose AdapterHub, a framework that allows dynamic "stitching-in" of pre-trained adapters for different tasks and languages.

XLM-R

A Framework For Contrastive Self-Supervised Learning And Designing A New Approach

1 code implementation31 Aug 2020 William Falcon, Kyunghyun Cho

Contrastive self-supervised learning (CSL) is an approach to learn useful representations by solving a pretext task that selects and compares anchor, negative and positive (APN) features from an unlabeled dataset.

Data Augmentation Image Classification +1

Evaluating representations by the complexity of learning low-loss predictors

1 code implementation15 Sep 2020 William F. Whitney, Min Jae Song, David Brandfonbrener, Jaan Altosaar, Kyunghyun Cho

We consider the problem of evaluating representations of data for use in solving a downstream task.

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

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.

Length-Adaptive Transformer: Train Once with Length Drop, Use Anytime with Search

1 code implementation ACL 2021 Gyuwan Kim, Kyunghyun Cho

We then conduct a multi-objective evolutionary search to find a length configuration that maximizes the accuracy and minimizes the efficiency metric under any given computational budget.

Question Answering text-classification +1

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

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.

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

NaturalProofs: Mathematical Theorem Proving in Natural Language

1 code implementation24 Mar 2021 Sean Welleck, Jiacheng Liu, Ronan Le Bras, Hannaneh Hajishirzi, Yejin Choi, Kyunghyun Cho

Understanding and creating mathematics using natural mathematical language - the mixture of symbolic and natural language used by humans - is a challenging and important problem for driving progress in machine learning.

Automated Theorem Proving Domain Generalization +3

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