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Hexiang Tan

5 accepted papers

2026

Resisting Contextual Interference in RAG via Parametric-Knowledge Reinforcement

ICLR 2026poster

Retrieval-augmented generation (RAG) improves performance on knowledge-intensive tasks but can be derailed by wrong, irrelevant, or conflicting retrieved text, causing models to rely on inaccurate evidence and cascade errors. We propose Knowledgeable-R1, a reinforcement-learning framework that expli…

Cited by 0SourcecodeScholar
2025

PRDetect: Perturbation-Robust LLM-generated Text Detection Based on Syntax Tree

NAACL 2025findings

As LLM-generated text becomes increasingly prevalent on the internet, often containing hallucinations or biases, detecting such content has emerged as a critical area of research.Recent methods have demonstrated impressive performance in detecting text generated entirely by LLMs.However, in real-wor…

2025

Too Consistent to Detect: A Study of Self-Consistent Errors in LLMs

EMNLP 2025

As large language models (LLMs) often generate plausible but incorrect content, error detection has become increasingly critical to ensure truthfulness.However, existing detection methods often overlook a critical problem we term as **self-consistent error**, where LLMs repeatedly generate the same

2024

Blinded by Generated Contexts: How Language Models Merge Generated and Retrieved Contexts When Knowledge Conflicts?

ACL 2024long

While auxiliary information has become a key to enhancing Large Language Models (LLMs), relatively little is known about how LLMs merge these contexts, specifically contexts generated by LLMs and those retrieved from external sources.To investigate this, we formulate a systematic framework to identi…

2023

ReFSQL: A Retrieval-Augmentation Framework for Text-to-SQL Generation

EMNLP 2023long findings

Text-to-SQL is the task that aims at translating natural language questions into SQL queries. Existing methods directly align the natural language with SQL Language and train one encoder-decoder-based model to fit all questions. However, they underestimate the inherent structural characteristics of…

Cited by 0SourceScholar