Papers by Haonan Lin

11 papers
OmniCharacter: Towards Immersive Role-Playing Agents with Seamless Speech-Language Personality Interaction (2025.acl-long)

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Challenge: Existing methods focus on replicating dialogues in textual form, neglecting the role’s voice traits as a crucial effect in interaction, which tends to be more immersive experiences in realistic scenarios.
Approach: They propose a first seamless speech-language personality interaction model to achieve immersive RPAs with low latency.
Outcome: The proposed model exhibits role-specific personality traits and vocal traits throughout the interaction, enabling a mixture of speech and language responses.
A Chinese Dataset for Evaluating the Safeguards in Large Language Models (2024.findings-acl)

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Challenge: a recent study has shown that large language models can produce harmful responses, exposing users to unexpected risks.
Approach: They propose a dataset for the safety evaluation of Chinese LLMs in Mandarin Chinese . they extend the dataset to better identify false negative and false positive examples .
Outcome: The proposed dataset is for the safety evaluation of Chinese LLMs, and is based on a Chinese dataset.
Prompt Space Optimizing Few-shot Reasoning Success with Large Language Models (2024.findings-naacl)

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Challenge: Prompt engineering is an essential technique for enhancing the abilities of large language models (LLMs) by providing explicit and specific instructions.
Approach: They propose a new approach that uses text embeddings to obtain basis vectors by matrix decomposition and constructs a space for representing all prompts.
Outcome: The proposed approach significantly outperforms state-of-the-art prompt paradigms on ten public reasoning benchmarks.
MMEvol: Empowering Multimodal Large Language Models with Evol-Instruct (2025.findings-acl)

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Challenge: a new framework for image-text instruction data evolution improves MLLM performance . lack of high-quality instruction data remains a major bottleneck in ML modeling .
Approach: They propose a multimodal instruction data evolution framework that iteratively enhances data quality through fine-grained perception, cognitive reasoning, and interaction evolution.
Outcome: The proposed approach improves MLLM performance in nine vision-language tasks while using significantly less data.
Sentiment-Aware Word and Sentence Level Pre-training for Sentiment Analysis (2022.emnlp-main)

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Challenge: Existing pre-trained language representation models (PLMs) capture sentiment information from word-level while under-considering sentence-level information.
Approach: They propose a Sentiment-aware pre-trained language model with combined Word-level and Sentence-level Pre-training tasks that enhance the PLM’s knowledge about sentiment words.
Outcome: The proposed model achieves state-of-the-art on various sentence-level and aspect-level sentiment classification benchmarks.
Multi-Level Knowledge Distillation for Out-of-Distribution Detection in Text (2023.acl-long)

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Challenge: Self-supervised representation learning has proved to be a valuable component for out-of-distribution (OoD) detection with only the texts of in-difference (ID) examples.
Approach: They propose a method that integrates strengths and weaknesses of both methods . they use a fine-tuned model as the teacher to teach a randomly initialized student model .
Outcome: The proposed method outperforms human evaluators in the pair-expert task on the Human ChatGPT Comparison Corpus.
Act-Adaptive Margin: Dynamically Calibrating Reward Models for Subjective Ambiguity (2026.acl-long)

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Challenge: Existing approaches to reward modeling in reinforcement learning tasks are limited when dealing with ambiguous preferences.
Approach: They propose to use AAM to dynamically calibrate preference margins using the Bradley-Terry model's internal parameter knowledge to improve reward modeling in subjective tasks.
Outcome: The proposed approach improves reward modeling by dynamically calibrating preference margins using the model’s internal parameter knowledge.
SCALAR: Scientific Citation-based Live Assessment of Long-context Academic Reasoning (2026.eacl-long)

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Challenge: Long-context understanding is a critical capability for large language models . evaluating this capability requires extensive human annotation, which is time-consuming and costly.
Approach: They propose a benchmark to assess citation-grounded long-context reasoning in academic writing.
Outcome: The proposed benchmark compares state-of-the-art models with human experts on two tasks . human experts achieve 90% accuracy, but most models struggle with the cloze-style task .
VideoScore: Building Automatic Metrics to Simulate Fine-grained Human Feedback for Video Generation (2024.emnlp-main)

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Challenge: Existing video metrics are lagging behind in providing reliable scores over generated videos due to lack of large-scale human-annotated dataset.
Approach: They propose to use VideoFeedback to train a human-annotated multi-aspect score over 37.6K synthesized videos from 11 existing video generative models.
Outcome: The proposed model outperforms the prior best metrics by 50 points in the test.
Generalized Category Discovery with Large Language Models in the Loop (2024.findings-acl)

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Challenge: Generalized Category Discovery (GCD) is a crucial task that aims to recognize both known and novel categories from a set of unlabeled data.
Approach: They propose a framework that introduces Large Language Models into the training loop to generate category names without human effort.
Outcome: The proposed framework outperforms SOTA models on three benchmark datasets and generates accurate category names for the discovered clusters.
GammaE: Gamma Embeddings for Logical Queries on Knowledge Graphs (2022.emnlp-main)

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Challenge: Existing methods for embedding knowledge graphs are difficult due to complicated query structures and incomplete graph data.
Approach: They propose a probabilistic embedding model for encoding entities and queries to answer different types of FOL queries on KGs.
Outcome: The proposed model outperforms state-of-the-art models on public benchmarks on three large logical query datasets.

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