Lei Hei — accepted AI-conference papers

2025

Resource-Friendly Dynamic Enhancement Chain for Multi-Hop Question Answering

Binquan Ji, Haibo Luo, YifeiLu YifeiLu, Lei Hei, Jiaqi Wang, Tingjing Liao +3

ACL 2025finding

Knowledge-intensive multi-hop question answering (QA) tasks, which require integrating evidence from multiple sources to address complex queries, often necessitate multiple rounds of retrieval and iterative generation by large language models (LLMs). However, incorporating many documents and extende…

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2025

Retrieval over Classification: Integrating Relation Semantics for Multimodal Relation Extraction

Lei Hei, Tingjing Liao, Peiyingxin, Yiyang Qi, Jiaqi Wang, Ruiting Li +1

EMNLP 2025

Relation extraction (RE) aims to identify semantic relations between entities in unstructured text. Although recent work extends traditional RE to multimodal scenarios, most approaches still adopt classification-based paradigms with fused multimodal features, representing relations as discrete label

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