Search Results for author: Han Guo

Found 28 papers, 11 papers with code

An Overview of Uncertainty Calibration for Text Classification and the Role of Distillation

no code implementations ACL (RepL4NLP) 2021 Han Guo, Ramakanth Pasunuru, Mohit Bansal

Many recalibration methods have been proposed in the literature for quantifying predictive uncertainty and calibrating model outputs, with varying degrees of complexity.

text-classification Text Classification

Human-in-the-Loop Policy Optimization for Preference-Based Multi-Objective Reinforcement Learning

no code implementations4 Jan 2024 Ke Li, Han Guo

The learned preference information is used to progressively guide policy optimization towards policies of interest.

Decision Making Management +1

LQ-LoRA: Low-rank Plus Quantized Matrix Decomposition for Efficient Language Model Finetuning

1 code implementation20 Nov 2023 Han Guo, Philip Greengard, Eric P. Xing, Yoon Kim

Our approach uses an iterative algorithm to decompose each pretrained matrix into a high-precision low-rank component and a memory-efficient quantized component.

Language Modelling Model Compression +1

Recouple Event Field via Probabilistic Bias for Event Extraction

no code implementations19 May 2023 Xingyu Bai, Taiqiang Wu, Han Guo, Zhe Zhao, Xuefeng Yang, Jiayi Li, Weijie Liu, Qi Ju, Weigang Guo, Yujiu Yang

Event Extraction (EE), aiming to identify and classify event triggers and arguments from event mentions, has benefited from pre-trained language models (PLMs).

Event Extraction

Federated Learning as Variational Inference: A Scalable Expectation Propagation Approach

1 code implementation8 Feb 2023 Han Guo, Philip Greengard, Hongyi Wang, Andrew Gelman, Yoon Kim, Eric P. Xing

A recent alternative formulation instead treats federated learning as a distributed inference problem, where the goal is to infer a global posterior from partitioned client data (Al-Shedivat et al., 2021).

Distributed Optimization Federated Learning +1

TencentPretrain: A Scalable and Flexible Toolkit for Pre-training Models of Different Modalities

3 code implementations13 Dec 2022 Zhe Zhao, Yudong Li, Cheng Hou, Jing Zhao, Rong Tian, Weijie Liu, Yiren Chen, Ningyuan Sun, Haoyan Liu, Weiquan Mao, Han Guo, Weigang Guo, Taiqiang Wu, Tao Zhu, Wenhang Shi, Chen Chen, Shan Huang, Sihong Chen, Liqun Liu, Feifei Li, Xiaoshuai Chen, Xingwu Sun, Zhanhui Kang, Xiaoyong Du, Linlin Shen, Kimmo Yan

The proposed pre-training models of different modalities are showing a rising trend of homogeneity in their model structures, which brings the opportunity to implement different pre-training models within a uniform framework.

MPCFormer: fast, performant and private Transformer inference with MPC

1 code implementation2 Nov 2022 Dacheng Li, Rulin Shao, Hongyi Wang, Han Guo, Eric P. Xing, Hao Zhang

Through extensive evaluations, we show that MPCFORMER significantly speeds up Transformer inference in MPC settings while achieving similar ML performance to the input model.

Knowledge Distillation

Ligandformer: A Graph Neural Network for Predicting Compound Property with Robust Interpretation

no code implementations21 Feb 2022 Jinjiang Guo, Qi Liu, Han Guo, Xi Lu

Robust and efficient interpretation of QSAR methods is quite useful to validate AI prediction rationales with subjective opinion (chemist or biologist expertise), understand sophisticated chemical or biological process mechanisms, and provide heuristic ideas for structure optimization in pharmaceutical industry.

Text Generation with Efficient (Soft) $Q$-Learning

no code implementations29 Sep 2021 Han Guo, Bowen Tan, Zhengzhong Liu, Eric Xing, Zhiting Hu

We apply the approach to a wide range of text generation tasks, including learning from noisy/negative examples, adversarial attacks, and prompt generation.

Q-Learning Reinforcement Learning (RL) +1

Uncertainty Toolbox: an Open-Source Library for Assessing, Visualizing, and Improving Uncertainty Quantification

1 code implementation21 Sep 2021 Youngseog Chung, Ian Char, Han Guo, Jeff Schneider, Willie Neiswanger

With increasing deployment of machine learning systems in various real-world tasks, there is a greater need for accurate quantification of predictive uncertainty.

BIG-bench Machine Learning Uncertainty Quantification

Efficient (Soft) Q-Learning for Text Generation with Limited Good Data

1 code implementation14 Jun 2021 Han Guo, Bowen Tan, Zhengzhong Liu, Eric P. Xing, Zhiting Hu

We apply the approach to a wide range of novel text generation tasks, including learning from noisy/negative examples, adversarial attacks, and prompt generation.

Q-Learning Reinforcement Learning (RL) +1

VisualGPT: Data-efficient Adaptation of Pretrained Language Models for Image Captioning

1 code implementation CVPR 2022 Jun Chen, Han Guo, Kai Yi, Boyang Li, Mohamed Elhoseiny

To the best of our knowledge, this is the first work that improves data efficiency of image captioning by utilizing LM pretrained on unimodal data.

Image Captioning Language Modelling +1

CPT: Efficient Deep Neural Network Training via Cyclic Precision

1 code implementation ICLR 2021 Yonggan Fu, Han Guo, Meng Li, Xin Yang, Yining Ding, Vikas Chandra, Yingyan Lin

In this paper, we attempt to explore low-precision training from a new perspective as inspired by recent findings in understanding DNN training: we conjecture that DNNs' precision might have a similar effect as the learning rate during DNN training, and advocate dynamic precision along the training trajectory for further boosting the time/energy efficiency of DNN training.

Language Modelling

DORB: Dynamically Optimizing Multiple Rewards with Bandits

no code implementations EMNLP 2020 Ramakanth Pasunuru, Han Guo, Mohit Bansal

Further, it is important to consider using a dynamic combination and curriculum of metric rewards that flexibly changes over time.

Data-to-Text Generation Question Generation +1

Franck-Condon tuning of optical cycling centers by organic functionalization

no code implementations8 Oct 2020 Claire E. Dickerson, Han Guo, Ashley J. Shin, Benjamin L. Augenbraun, Justin R. Caram, Wesley C. Campbell, Anastassia N. Alexandrova

Laser induced electronic excitations that spontaneously emit photons and decay directly to the initial ground state ("optical cycling transitions") are used in quantum information and precision measurement for state initialization and readout.

Atomic Physics

Multi-Source Domain Adaptation for Text Classification via DistanceNet-Bandits

no code implementations13 Jan 2020 Han Guo, Ramakanth Pasunuru, Mohit Bansal

Next, we develop a DistanceNet model which uses these distance measures, or a mixture of these distance measures, as an additional loss function to be minimized jointly with the task's loss function, so as to achieve better unsupervised domain adaptation.

General Classification Sentiment Analysis +3

AutoSeM: Automatic Task Selection and Mixing in Multi-Task Learning

no code implementations NAACL 2019 Han Guo, Ramakanth Pasunuru, Mohit Bansal

To address these issues, we present AutoSeM, a two-stage MTL pipeline, where the first stage automatically selects the most useful auxiliary tasks via a Beta-Bernoulli multi-armed bandit with Thompson Sampling, and the second stage learns the training mixing ratio of these selected auxiliary tasks via a Gaussian Process based Bayesian optimization framework.

Bayesian Optimization Inductive Bias +2

Dynamic Multi-Level Multi-Task Learning for Sentence Simplification

no code implementations COLING 2018 Han Guo, Ramakanth Pasunuru, Mohit Bansal

In this work, we first present a strong pointer-copy mechanism based sequence-to-sequence sentence simplification model, and then improve its entailment and paraphrasing capabilities via multi-task learning with related auxiliary tasks of entailment and paraphrase generation.

Multi-Task Learning Paraphrase Generation +3

Multimodal Fusion with Recurrent Neural Networks for Rumor Detection on Microblogs

no code implementations Mountain View, CA, USA 2017 Zhiwei Jin, Juan Cao, Han Guo, Yongdong Zhang

In this paper, we propose a novel Recurrent Neural Network with an at- tention mechanism (att-RNN) to fuse multimodal features for e ective rumor detection.

Video Denoising and Enhancement via Dynamic Video Layering

no code implementations5 Oct 2017 Han Guo, Namrata Vaswani

Video denoising refers to the problem of removing "noise" from a video sequence.

Denoising Video Denoising

Towards Improving Abstractive Summarization via Entailment Generation

no code implementations WS 2017 Ramakanth Pasunuru, Han Guo, Mohit Bansal

Abstractive summarization, the task of rewriting and compressing a document into a short summary, has achieved considerable success with neural sequence-to-sequence models.

Abstractive Text Summarization Machine Translation +2

Spice up Your Chat: The Intentions and Sentiment Effects of Using Emoji

no code implementations8 Mar 2017 Tianran Hu, Han Guo, Hao Sun, Thuy-vy Thi Nguyen, Jiebo Luo

Second, from a perspective of message recipients, we further study the sentiment effects of emojis, as well as their duplications, on verbal messages.

Correlated-PCA: Principal Components' Analysis when Data and Noise are Correlated

no code implementations NeurIPS 2016 Namrata Vaswani, Han Guo

We obtain a correctness result for the standard eigenvalue decomposition (EVD) based solution to PCA under simple assumptions on the data-noise correlation.

valid

Correlated-PCA: Principal Components' Analysis when Data and Noise are Correlated

no code implementations NeurIPS 2016 Namrata Vaswani, Han Guo

We obtain a correctness result for the standard eigenvalue decomposition (EVD) based solution to PCA under simple assumptions on the data-noise correlation.

valid

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