Search Results for author: Hou Pong Chan

Found 28 papers, 20 papers with code

From Pixels to Insights: A Survey on Automatic Chart Understanding in the Era of Large Foundation Models

1 code implementation18 Mar 2024 Kung-Hsiang Huang, Hou Pong Chan, Yi R. Fung, Haoyi Qiu, Mingyang Zhou, Shafiq Joty, Shih-Fu Chang, Heng Ji

This survey paper serves as a comprehensive resource for researchers and practitioners in the fields of natural language processing, computer vision, and data analysis, providing valuable insights and directions for future research in chart understanding leveraging large foundation models.

Data Visualization

Persona-DB: Efficient Large Language Model Personalization for Response Prediction with Collaborative Data Refinement

no code implementations16 Feb 2024 Chenkai Sun, Ke Yang, Revanth Gangi Reddy, Yi R. Fung, Hou Pong Chan, ChengXiang Zhai, Heng Ji

The increasing demand for personalized interactions with large language models (LLMs) calls for the development of methodologies capable of accurately and efficiently identifying user opinions and preferences.

Language Modelling Large Language Model +1

Can LLMs Produce Faithful Explanations For Fact-checking? Towards Faithful Explainable Fact-Checking via Multi-Agent Debate

no code implementations12 Feb 2024 Kyungha Kim, Sangyun Lee, Kung-Hsiang Huang, Hou Pong Chan, Manling Li, Heng Ji

Fact-checking research has extensively explored verification but less so the generation of natural-language explanations, crucial for user trust.

Fact Checking Text Generation

Do LVLMs Understand Charts? Analyzing and Correcting Factual Errors in Chart Captioning

2 code implementations15 Dec 2023 Kung-Hsiang Huang, Mingyang Zhou, Hou Pong Chan, Yi R. Fung, Zhenhailong Wang, Lingyu Zhang, Shih-Fu Chang, Heng Ji

This work inaugurates a new domain in factual error correction for chart captions, presenting a novel evaluation mechanism, and demonstrating an effective approach to ensuring the factuality of generated chart captions.

Factual Inconsistency Detection in Chart Captioning Image Captioning +1

AMERICANO: Argument Generation with Discourse-driven Decomposition and Agent Interaction

no code implementations31 Oct 2023 Zhe Hu, Hou Pong Chan, Yu Yin

Argument generation is a challenging task in natural language processing, which requires rigorous reasoning and proper content organization.

Decoding the Silent Majority: Inducing Belief Augmented Social Graph with Large Language Model for Response Forecasting

1 code implementation20 Oct 2023 Chenkai Sun, Jinning Li, Yi R. Fung, Hou Pong Chan, Tarek Abdelzaher, ChengXiang Zhai, Heng Ji

Automatic response forecasting for news media plays a crucial role in enabling content producers to efficiently predict the impact of news releases and prevent unexpected negative outcomes such as social conflict and moral injury.

Language Modelling Large Language Model

Measuring the Effect of Influential Messages on Varying Personas

1 code implementation25 May 2023 Chenkai Sun, Jinning Li, Hou Pong Chan, ChengXiang Zhai, Heng Ji

Our analysis shows that the best-performing models are capable of predicting responses that are consistent with the personas, and as a byproduct, the task formulation also enables many interesting applications in the analysis of social network groups and their opinions, such as the discovery of extreme opinion groups.

Interpretable Automatic Fine-grained Inconsistency Detection in Text Summarization

1 code implementation23 May 2023 Hou Pong Chan, Qi Zeng, Heng Ji

Motivated by how humans inspect factual inconsistency in summaries, we propose an interpretable fine-grained inconsistency detection model, FineGrainFact, which explicitly represents the facts in the documents and summaries with semantic frames extracted by semantic role labeling, and highlights the related semantic frames to predict inconsistency.

Semantic Role Labeling Text Summarization

ManiTweet: A New Benchmark for Identifying Manipulation of News on Social Media

no code implementations23 May 2023 Kung-Hsiang Huang, Hou Pong Chan, Kathleen McKeown, Heng Ji

We present a novel task, identifying manipulation of news on social media, which aims to detect manipulation in social media posts and identify manipulated or inserted information.

Fact Checking

Zero-shot Faithful Factual Error Correction

1 code implementation13 May 2023 Kung-Hsiang Huang, Hou Pong Chan, Heng Ji

Faithfully correcting factual errors is critical for maintaining the integrity of textual knowledge bases and preventing hallucinations in sequence-to-sequence models.

Can LMs Generalize to Future Data? An Empirical Analysis on Text Summarization

1 code implementation3 May 2023 Chi Seng Cheang, Hou Pong Chan, Derek F. Wong, Xuebo Liu, Zhaocong Li, Yanming Sun, Shudong Liu, Lidia S. Chao

Moreover, the knowledge memorized by PLMs may quickly become outdated, which affects the generalization performance of PLMs on future data.

Abstractive Text Summarization

PDSum: Prototype-driven Continuous Summarization of Evolving Multi-document Sets Stream

1 code implementation10 Feb 2023 Susik Yoon, Hou Pong Chan, Jiawei Han

Summarizing text-rich documents has been long studied in the literature, but most of the existing efforts have been made to summarize a static and predefined multi-document set.

Document Summarization Multi-Document Summarization

SumREN: Summarizing Reported Speech about Events in News

1 code implementation2 Dec 2022 Revanth Gangi Reddy, Heba Elfardy, Hou Pong Chan, Kevin Small, Heng Ji

A primary objective of news articles is to establish the factual record for an event, frequently achieved by conveying both the details of the specified event (i. e., the 5 Ws; Who, What, Where, When and Why regarding the event) and how people reacted to it (i. e., reported statements).

Document Summarization Multi-Document Summarization +2

Multimedia Generative Script Learning for Task Planning

1 code implementation25 Aug 2022 Qingyun Wang, Manling Li, Hou Pong Chan, Lifu Huang, Julia Hockenmaier, Girish Chowdhary, Heng Ji

Goal-oriented generative script learning aims to generate subsequent steps to reach a particular goal, which is an essential task to assist robots or humans in performing stereotypical activities.

Contrastive Learning Descriptive +3

PLANET: Dynamic Content Planning in Autoregressive Transformers for Long-form Text Generation

no code implementations ACL 2022 Zhe Hu, Hou Pong Chan, Jiachen Liu, Xinyan Xiao, Hua Wu, Lifu Huang

Despite recent progress of pre-trained language models on generating fluent text, existing methods still suffer from incoherence problems in long-form text generation tasks that require proper content control and planning to form a coherent high-level logical flow.

Contrastive Learning Sentence +1

Grounding Commands for Autonomous Vehicles via Layer Fusion with Region-specific Dynamic Layer Attention

no code implementations14 Mar 2022 Hou Pong Chan, Mingxi Guo, Cheng-Zhong Xu

In this work, we study the problem of language grounding for autonomous vehicles, which aims to localize a region in a visual scene according to a natural language command from a passenger.

Autonomous Vehicles

Controllable Dialogue Generation with Disentangled Multi-grained Style Specification and Attribute Consistency Reward

no code implementations14 Sep 2021 Zhe Hu, Zhiwei Cao, Hou Pong Chan, Jiachen Liu, Xinyan Xiao, Jinsong Su, Hua Wu

Controllable text generation is an appealing but challenging task, which allows users to specify particular attributes of the generated outputs.

Attribute Dialogue Generation +1

Controllable Summarization with Constrained Markov Decision Process

1 code implementation7 Aug 2021 Hou Pong Chan, Lu Wang, Irwin King

We study controllable text summarization which allows users to gain control on a particular attribute (e. g., length limit) of the generated summaries.

Attribute Text Summarization

Dialogue Summarization with Supporting Utterance Flow Modeling and Fact Regularization

1 code implementation3 Aug 2021 Wang Chen, Piji Li, Hou Pong Chan, Irwin King

The supporting utterance flow modeling helps to generate a coherent summary by smoothly shifting the focus from the former utterances to the later ones.

A Condense-then-Select Strategy for Text Summarization

1 code implementation19 Jun 2021 Hou Pong Chan, Irwin King

This framework first selects salient sentences and then independently condenses each of the selected sentences into a concise version.

Sentence Text Summarization

A Unified Dual-view Model for Review Summarization and Sentiment Classification with Inconsistency Loss

1 code implementation2 Jun 2020 Hou Pong Chan, Wang Chen, Irwin King

Review summarization aims at generating a concise summary that describes the key opinions and sentiment of a review, while sentiment classification aims to predict a sentiment label indicating the sentiment attitude of a review.

General Classification Sentiment Analysis +1

Exclusive Hierarchical Decoding for Deep Keyphrase Generation

1 code implementation ACL 2020 Wang Chen, Hou Pong Chan, Piji Li, Irwin King

A new setting is recently introduced into this problem, in which, given a document, the model needs to predict a set of keyphrases and simultaneously determine the appropriate number of keyphrases to produce.

Keyphrase Generation

Neural Keyphrase Generation via Reinforcement Learning with Adaptive Rewards

1 code implementation ACL 2019 Hou Pong Chan, Wang Chen, Lu Wang, Irwin King

To address this problem, we propose a reinforcement learning (RL) approach for keyphrase generation, with an adaptive reward function that encourages a model to generate both sufficient and accurate keyphrases.

Keyphrase Generation reinforcement-learning +1

Topic-Aware Neural Keyphrase Generation for Social Media Language

2 code implementations ACL 2019 Yue Wang, Jing Li, Hou Pong Chan, Irwin King, Michael R. Lyu, Shuming Shi

Further discussions show that our model learns meaningful topics, which interprets its superiority in social media keyphrase generation.

Keyphrase Generation

An Integrated Approach for Keyphrase Generation via Exploring the Power of Retrieval and Extraction

1 code implementation NAACL 2019 Wang Chen, Hou Pong Chan, Piji Li, Lidong Bing, Irwin King

For further exploiting the power of extraction and retrieval, we propose a neural-based merging module to combine and re-rank the predicted keyphrases from the enhanced generative model, the extractive model, and the retrieved keyphrases.

Keyphrase Generation Multi-Task Learning +1

Thread Popularity Prediction and Tracking with a Permutation-invariant Model

no code implementations EMNLP 2018 Hou Pong Chan, Irwin King

This task has been formulated as a reinforcement learning problem, in which the reward of the agent is the sum of positive responses received by the recommended comments.

Cannot find the paper you are looking for? You can Submit a new open access paper.