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Runchu Tian

5 accepted papers

2025

Beyond True or False: Retrieval-Augmented Hierarchical Analysis of Nuanced Claims

ACL 2025long

Claims made by individuals or entities are oftentimes nuanced and cannot be clearly labeled as entirely “true” or “false”—as is frequently the case with scientific and political claims. However, a claim (e.g., “vaccine A is better than vaccine B”) can be dissected into its integral aspects and sub-a…

2025

Distance between Relevant Information Pieces Causes Bias in Long-Context LLMs

ACL 2025finding

Positional bias in large language models hinders their ability to effectively process long inputs. A prominent example is the “lost in the middle” phenomenon, where LLMs struggle to utilize relevant information situated in the middle of the input. While prior research primarily focuses on single pie…

2025

Topic Coverage-based Demonstration Retrieval for In-Context Learning

EMNLP 2025

The effectiveness of in-context learning relies heavily on selecting demonstrations that provide all the necessary information for a given test input.To achieve this, it is crucial to identify and cover fine-grained knowledge requirements. However, prior methods often retrieve demonstrations based s

2024

DebugBench: Evaluating Debugging Capability of Large Language Models

ACL 2024findings

Large Language Models (LLMs) have demonstrated exceptional coding capability. However, as another critical component of programming proficiency, the debugging capability of LLMs remains relatively unexplored. Previous evaluations of LLMs’ debugging ability are significantly limited by the risk of da…

2024

ToolLLM: Facilitating Large Language Models to Master 16000+ Real-world APIs

ICLR 2024spotlight

Despite the advancements of open-source large language models (LLMs), e.g., LLaMA, they remain significantly limited in tool-use capabilities, i.e., using external tools (APIs) to fulfill human instructions. The reason is that current instruction tuning largely focuses on basic language tasks but ig…