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Hui Wan

8 accepted papers

2026

STAR: Test-Time Adaptation Can Enhance Universal Prompt Learning for Vision-Language Models

CVPR 2026

This paper studies the problem of universal test-time prompt learning for vision-language models (VLMs) which aims to enhance prompt learning for a pre-trained VLM via unlabeled target data containing out-of-distribution (OOD) samples. However, existing test-time adaptation approaches often overlook

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2024

How Can Personalized Context Help? Exploring Joint Retrieval of Passage and Personalized Context

ICASSP 2024accepted

The integration of external personalized context information into document-grounded conversational systems has significant potential business value, but has not been well-studied. Motivated by the concept of personalized context-aware document-grounded conversational systems, we introduce the task o…

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2023

Semi-Structured Object Sequence Encoders

EMNLP 2023long findings

In this paper we explore the task of modeling semi-structured object sequences; in particular, we focus our attention on the problem of developing a structure-aware input representation for such sequences. Examples of such data include user activity on websites, machine logs, and many others. This t…

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2022

Fast and Light-Weight Answer Text Retrieval in Dialogue Systems

NAACL 2022industry

Dialogue systems can benefit from being able to search through a corpus of text to find information relevant to user requests, especially when encountering a request for which no manually curated response is available. The state-of-the-art technology for neural dense retrieval or re-ranking involves…

2022

Learning as Conversation: Dialogue Systems Reinforced for Information Acquisition

NAACL 2022long

We propose novel AI-empowered chat bots for learning as conversation where a user does not read a passage but gains information and knowledge through conversation with a teacher bot. Our information acquisition-oriented dialogue system employs a novel adaptation of reinforced self-play so that the s…

2021

Does Structure Matter? Encoding Documents for Machine Reading Comprehension

NAACL 2021long

Machine reading comprehension is a challenging task especially for querying documents with deep and interconnected contexts. Transformer-based methods have shown advanced performances on this task; however, most of them still treat documents as a flat sequence of tokens. This work proposes a new Tra…

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2021

Explaining Neural Network Predictions on Sentence Pairs via Learning Word-Group Masks

NAACL 2021long

Explaining neural network models is important for increasing their trustworthiness in real-world applications. Most existing methods generate post-hoc explanations for neural network models by identifying individual feature attributions or detecting interactions between adjacent features. However, f…

2021

MultiDoc2Dial: Modeling Dialogues Grounded in Multiple Documents

EMNLP 2021main

We propose MultiDoc2Dial, a new task and dataset on modeling goal-oriented dialogues grounded in multiple documents. Most previous works treat document-grounded dialogue modeling as machine reading comprehension task based on a single given document or passage. In this work, we aim to address more r…