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Qin Chen

25 accepted papers

2026

Are Common Substructures Transferable? Understanding Transferability in Graph Pretraining under Riemannian Geometry

ICML 2026poster

Foundation models have sparked a revolution via a pretraining-adaptation paradigm, with recent efforts extending this success to graphs. Unlike other modalities, graphs contain rich structural patterns, yet their structural transferability remains poorly understood. Prior studies consider common sub…

Cited by 0SourceScholar
2026

Dynamic Multimodal Activation Steering for Hallucination Mitigation in Large Vision-Language Models

ICLR 2026poster

Large Vision-Language Models (LVLMs) exhibit outstanding performance on vision-language tasks but struggle with hallucination problems. Through in-depth analysis of LVLM activation patterns, we reveal two key findings: 1) truthfulness and visual perception capabilities predominantly engage different…

Cited by 4SourceScholar
2026

LifeAlign: Lifelong Alignment for Large Language Models with Memory-Augmented Focalized Preference Optimization

AAAI 2026technical

Alignment plays a crucial role in Large Language Models (LLMs) in aligning with human preferences on a specific task/domain. Traditional alignment methods suffer from catastrophic forgetting, where models lose previously learned values when adapting to new preferences or domains. We introduce LifeAl

Cited by 0SourcePDFScholar
2026

Mimic Human Cognition, Master Multi-Image Reasoning: A Meta-Action Framework for Enhanced Visual Understanding

CVPR 2026

While Multimodal Large Language Models (MLLMs) excel at single-image understanding, they exhibit significantly degraded performance in multi-image reasoning scenarios. Multi-image reasoning presents fundamental challenges including complex inter-relationships between images and scattered critical in

Cited by 0SourceScholar
2026

ROGA: Scaling Generalist Agents for Office Productivity Tasks via Tool Generation

ICLR 2026poster

Automatic tool generation (ATG) has emerged as a key approach to enable the automatic adaptation across diverse tasks within a single generalist agent. Despite their potential, we argue that current ATG agents, often built on reactive paradigms, fail to effectively adapt to realistic environments re…

Cited by 0SourceScholar
2025

CL-MoE: Enhancing Multimodal Large Language Model with Dual Momentum Mixture-of-Experts for Continual Visual Question Answering

CVPR 2025highlight

Multimodal large language models (MLLMs) have garnered widespread attention from researchers due to their remarkable understanding and generation capabilities in visual language tasks (e.g., visual question answering). However, the rapid pace of knowledge updates in the real world makes offline trai…

Cited by 2SourcePDFScholar
2025

Enhancing Uncertainty Modeling with Semantic Graph for Hallucination Detection

AAAI 2025technical

Large Language Models (LLMs) are prone to hallucination with non-factual or unfaithful statements, which undermines the applications in real-world scenarios. Recent researches focus on uncertainty-based hallucination detection, which utilizes the output probability of LLMs for uncertainty calculatio…

Cited by 1SourcePDFScholar
2025

NoiseController: Towards Consistent Multi-view Video Generation via Noise Decomposition and Collaboration

ICCV 2025poster

High-quality video generation is crucial for many fields, including the film industry and autonomous driving. However, generating videos with spatiotemporal consistencies remains challenging. Current methods typically utilize attention mechanisms or modify noise to achieve consistent videos, neglect…

2025

Optimizing Question Semantic Space for Dynamic Retrieval-Augmented Multi-hop Question Answering

ACL 2025long

Retrieval-augmented generation (RAG) is usually integrated into large language models (LLMs) to mitigate hallucinations and knowledge obsolescence. Whereas, conventional one-step retrieve-and-read methods are insufficient for multi-hop question answering, facing challenges of retrieval semantic mism…

Cited by 0SourcePDFScholar
2025

P-React: Synthesizing Topic-Adaptive Reactions of Personality Traits via Mixture of Specialized LoRA Experts

ACL 2025finding

Personalized large language models (LLMs) have attracted great attention in many applications, such as emotional support and role-playing. However, existing works primarily focus on modeling explicit character profiles, while ignoring the underlying personality traits that truly shape behaviors and…

Cited by 0SourcePDFScholar
2025

SheetDesigner: MLLM-Powered Spreadsheet Layout Generation with Rule-Based and Vision-Based Reflection

EMNLP 2025

Spreadsheets are critical to data-centric tasks, with rich, structured layouts that enable efficient information transmission. Given the time and expertise required for manual spreadsheet layout design, there is an urgent need for automated solutions.However, existing automated layout models are ill

Cited by 0SourcePDFScholar
2024

A Regularization-based Transfer Learning Method for Information Extraction via Instructed Graph Decoder

COLING 2024main

Information extraction (IE) aims to extract complex structured information from the text. Numerous datasets have been constructed for various IE tasks, leading to time-consuming and labor-intensive data annotations. Nevertheless, most prevailing methods focus on training task-specific models, while…

2024

Boosting Large Language Models with Continual Learning for Aspect-based Sentiment Analysis

EMNLP 2024finding

Aspect-based sentiment analysis (ABSA) is an important subtask of sentiment analysis, which aims to extract the aspects and predict their sentiments. Most existing studies focus on improving the performance of the target domain by fine-tuning domain-specific models (trained on source domains) based…

Cited by 6SourcePDFScholar
2024

DiaHalu: A Dialogue-level Hallucination Evaluation Benchmark for Large Language Models

EMNLP 2024finding

Though large language models (LLMs) achieve significant success in recent years, the hallucination issue remains a challenge, and numerous benchmarks are proposed for hallucination detection. Nevertheless, some of these benchmarks are not naturally generated by LLMs but are intentionally induced. Al…

2024

Domain Generalization via Causal Adjustment for Cross-Domain Sentiment Analysis

COLING 2024main

Domain adaption has been widely adapted for cross-domain sentiment analysis to transfer knowledge from the source domain to the target domain. Whereas, most methods are proposed under the assumption that the target (test) domain is known, making them fail to generalize well on unknown test data that…

2024

Learning Intrinsic Dimension via Information Bottleneck for Explainable Aspect-based Sentiment Analysis

COLING 2024main

Gradient-based explanation methods are increasingly used to interpret neural models in natural language processing (NLP) due to their high fidelity. Such methods determine word-level importance using dimension-level gradient values through a norm function, often presuming equal significance for all…

Cited by 1SourcePDFScholar
2024

Let’s Rectify Step by Step: Improving Aspect-based Sentiment Analysis with Diffusion Models

COLING 2024main

Aspect-Based Sentiment Analysis (ABSA) stands as a crucial task in predicting the sentiment polarity associated with identified aspects within text. However, a notable challenge in ABSA lies in precisely determining the aspects’ boundaries (start and end indices), especially for long ones, due to us…

2023

LoGoNet: Towards Accurate 3D Object Detection With Local-to-Global Cross-Modal Fusion

CVPR 2023poster

LiDAR-camera fusion methods have shown impressive performance in 3D object detection. Recent advanced multi-modal methods mainly perform global fusion, where image features and point cloud features are fused across the whole scene. Such practice lacks fine-grained region-level information, yielding…

2023

Tell Model Where to Attend: Improving Interpretability of Aspect-Based Sentiment Classification via Small Explanation Annotations

ICASSP 2023accepted

Gradient-based explanation methods play an important role in the field of interpreting complex deep neural networks for NLP models. However, the existing work has shown that the gradients of a model are unstable and easily manipulable, which impacts the model’s reliability largely. According to our…

Cited by 0SourceScholar
2022

A Multi-Format Transfer Learning Model for Event Argument Extraction via Variational Information Bottleneck

COLING 2022main

Event argument extraction (EAE) aims to extract arguments with given roles from texts, which have been widely studied in natural language processing. Most previous works have achieved good performance in specific EAE datasets with dedicated neural architectures. Whereas, these architectures are usua…

Cited by 20SourcePDFScholar
2022

CUP: Curriculum Learning based Prompt Tuning for Implicit Event Argument Extraction

IJCAI 2022poster

Implicit event argument extraction (EAE) aims to identify arguments that could scatter over the document. Most previous work focuses on learning the direct relations between arguments and the given trigger, while the implicit relations with long-range dependency are not well studied. Moreover, recen…

2022

Enhancing Class Understanding Via Prompt-Tuning For Zero-Shot Text Classification

ICASSP 2022accepted

Zero-shot text classification (ZSTC) poses a big challenge due to the lack of labeled data for unseen classes during training. Most studies focus on transferring knowledge from seen classes to unseen classes, which have achieved good performance in most cases. Whereas, it is difficult to transfer kn…

Cited by 0SourceScholar