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Hwanhee Lee

26 accepted papers

2025

AdvisorQA: Towards Helpful and Harmless Advice-seeking Question Answering with Collective Intelligence

NAACL 2025long

As the integration of large language models into daily life is on the rise, there is still a lack of dataset for *advising on subjective and personal dilemmas*. To address this gap, we introduce AdvisorQA, which aims to improve LLMs’ capability to offer advice for deeply subjective concerns, utilizi…

2025

Dynamic Label Name Refinement for Few-Shot Dialogue Intent Classification

ACL 2025short

Dialogue intent classification aims to identify the underlying purpose or intent of a user’s input in a conversation. Current intent classification systems encounter considerable challenges, primarily due to the vast number of possible intents and the significant semantic overlap among similar inten…

2025

Event-Driven Storytelling with Multiple Lifelike Humans in a 3D Scene

ICCV 2025poster

In this work, we propose a framework that creates a lively virtual dynamic scene with contextual motions of multiple humans. Generating multi-human contextual motion requires holistic reasoning over dynamic relationships among human-human and human-scene interactions. We adapt the power of a large l…

Cited by 0SourcePDFScholar
2025

How Do Large Vision-Language Models See Text in Image? Unveiling the Distinctive Role of OCR Heads

EMNLP 2025

Despite significant advancements in Large Vision Language Models (LVLMs), a gap remains, particularly regarding their interpretability and how they locate and interpret textual information within images. In this paper, we explore various LVLMs to identify the specific heads responsible for recognizi

Cited by 0SourcePDFScholar
2025

Keep Security! Benchmarking Security Policy Preservation in Large Language Model Contexts Against Indirect Attacks in Question Answering

EMNLP 2025

As Large Language Models (LLMs) are increasingly deployed in sensitive domains such as enterprise and government, ensuring that they adhere to **user-defined security policies** within context is critical-especially with respect to information non-disclosure. While prior LLM studies have focused on

2025

Probing-RAG: Self-Probing to Guide Language Models in Selective Document Retrieval

NAACL 2025findings

Retrieval-Augmented Generation (RAG) enhances language models by retrieving and incorporating relevant external knowledge. However, traditional retrieve-and-generate processes may not be optimized for real-world scenarios, where queries might require multiple retrieval steps or none at all. In this…

Cited by 29SourcePDFScholar
2025

SAFE-SQL: Self-Augmented In-Context Learning with Fine-grained Example Selection for Text-to-SQL

EMNLP 2025

Text-to-SQL aims to convert natural language questions into executable SQL queries. While previous approaches, such as skeleton-masked selection, have demonstrated strong performance by retrieving similar training examples to guide large language models (LLMs), they struggle in real-world scenarios

Cited by 0SourcePDFScholar
2024

FIZZ: Factual Inconsistency Detection by Zoom-in Summary and Zoom-out Document

EMNLP 2024main

Through the advent of pre-trained language models, there have been notable advancements in abstractive summarization systems. Simultaneously, a considerable number of novel methods for evaluating factual consistency in abstractive summarization systems has been developed. But these evaluation approa…

2024

IterCQR: Iterative Conversational Query Reformulation with Retrieval Guidance

NAACL 2024long

Conversational search aims to retrieve passages containing essential information to answer queries in a multi-turn conversation. In conversational search, reformulating context-dependent conversational queries into stand-alone forms is imperative to effectively utilize off-the-shelf retrievers. Prev…

2024

KoCoSa: Korean Context-aware Sarcasm Detection Dataset

COLING 2024main

Sarcasm is a way of verbal irony where someone says the opposite of what they mean, often to ridicule a person, situation, or idea. It is often difficult to detect sarcasm in the dialogue since detecting sarcasm should reflect the context (i.e., dialogue history). In this paper, we introduce a new d…

2024

Kosmic: Korean Text Similarity Metric Reflecting Honorific Distinctions

COLING 2024main

Existing English-based text similarity measurements primarily focus on the semantic dimension, neglecting the unique linguistic attributes found in languages like Korean, where honorific expressions are explicitly integrated. To address this limitation, this study proposes Kosmic, a novel Korean tex…

Cited by 0SourcePDFScholar
2024

LifeTox: Unveiling Implicit Toxicity in Life Advice

NAACL 2024short

As large language models become increasingly integrated into daily life, detecting implicit toxicity across diverse contexts is crucial. To this end, we introduce LifeTox, a dataset designed for identifying implicit toxicity within a broad range of advice-seeking scenarios. Unlike existing safety da…

Cited by 7SourcePDFScholar
2023

Asking Clarification Questions to Handle Ambiguity in Open-Domain QA

EMNLP 2023long findings

Ambiguous questions persist in open-domain question answering, because formulating a precise question with a unique answer is often challenging. Previous works have tackled this issue by asking disambiguated questions for all possible interpretations of the ambiguous question. Instead, we propose to…

Cited by 0SourcecodeScholar
2023

Critic-Guided Decoding for Controlled Text Generation

ACL 2023findings

Steering language generation towards objectives or away from undesired content has been a long-standing goal in utilizing language models (LM). Recent work has demonstrated reinforcement learning and weighted decoding as effective approaches to achieve a higher level of language control and quality…

Cited by 35SourcePDFScholar
2023

Dialogizer: Context-aware Conversational-QA Dataset Generation from Textual Sources

EMNLP 2023long main

To address the data scarcity issue in Conversational question answering (ConvQA), a dialog inpainting method, which utilizes documents to generate ConvQA datasets, has been proposed. However, the original dialog inpainting model is trained solely on the dialog reconstruction task, resulting in the g…

Cited by 0SourceScholar
2022

Masked Summarization to Generate Factually Inconsistent Summaries for Improved Factual Consistency Checking

NAACL 2022findings

Despite the recent advances in abstractive summarization systems, it is still difficult to determine whether a generated summary is factual consistent with the source text. To this end, the latest approach is to train a factual consistency classifier on factually consistent and inconsistent summarie…

2021

KPQA: A Metric for Generative Question Answering Using Keyphrase Weights

NAACL 2021long

In the automatic evaluation of generative question answering (GenQA) systems, it is difficult to assess the correctness of generated answers due to the free-form of the answer. Especially, widely used n-gram similarity metrics often fail to discriminate the incorrect answers since they equally consi…

2021

QACE: Asking Questions to Evaluate an Image Caption

EMNLP 2021finding

In this paper we propose QACE, a new metric based on Question Answering for Caption Evaluation to evaluate image captioning based on Question Generation(QG) and Question Answering(QA) systems. QACE generates questions on the evaluated caption and check its content by asking the questions on either t…

2021

UMIC: An Unreferenced Metric for Image Captioning via Contrastive Learning

ACL 2021short

Despite the success of various text generation metrics such as BERTScore, it is still difficult to evaluate the image captions without enough reference captions due to the diversity of the descriptions. In this paper, we introduce a new metric UMIC, an Unreferenced Metric for Image Captioning which…

2020

Attentive Modality Hopping Mechanism for Speech Emotion Recognition

ICASSP 2020accepted

In this work, we explore the impact of visual modality in addition to speech and text for improving the accuracy of the emotion detection system. The traditional approaches tackle this task by independently fusing the knowledge from the various modalities for performing emotion classification. In co…

Cited by 0SourceScholar