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Weixin Zeng

4 accepted papers

2026

Iterative Multi-Granular RAG with Contextual Hierarchical Graph

AAAI 2026technical

Retrieval-Augmented Generation (RAG) enhances large language models (LLMs) with external knowledge retrieval, improving factual accuracy and knowledge coverage. However, existing RAG approaches face a fundamental trade-off when handling complex reasoning: while traditional iterative retrieval method

Cited by 0SourcePDFScholar
2026

NeSTR: A Neuro-Symbolic Abductive Framework for Temporal Reasoning in Large Language Models

AAAI 2026technical

Large Language Models (LLMs) have demonstrated remarkable performance across a wide range of natural language processing tasks. However, temporal reasoning, particularly under complex temporal constraints, remains a major challenge. To this end, existing approaches have explored symbolic methods, wh

Cited by 0SourcePDFScholar
2025

Each Fake News Is Fake in Its Own Way: An Attribution Multi-Granularity Benchmark for Multimodal Fake News Detection

AAAI 2025technical

Social platforms, while facilitating access to information, have also become saturated with a plethora of fake news, resulting in negative consequences. Automatic multimodal fake news detection is a worthwhile pursuit. Existing multimodal fake news datasets only provide binary labels of real or fake…

2025

Multi-Modal Entities Matter: Benchmarking Multi-Modal Entity Alignment

COLING 2025main

Multi-modal entity alignment (MMEA) is a long-standing task that aims to discover identical entities between different multi-modal knowledge graphs (MMKGs). However, most of the existing MMEA datasets consider the multi-modal data as the attributes of textual entities, while neglecting the correlati…

Cited by 0SourcePDFScholar