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Yunxiao Zhao

3 accepted papers

2025

LOG: A Local-to-Global Optimization Approach for Retrieval-based Explainable Multi-Hop Question Answering

COLING 2025main

Multi-hop question answering (MHQA) aims to utilize multi-source intensive documents retrieved to derive the answer. However, it is very challenging to model the importance of knowledge retrieved. Previous approaches primarily emphasize single-step and multi-step iterative decomposition or retrieval…

2024

AGR: Reinforced Causal Agent-Guided Self-explaining Rationalization

ACL 2024short

Most existing rationalization approaches are susceptible to degeneration accumulation due to a lack of effective control over the learning direction of the model during training. To address this issue, we propose a novel approach AGR (Agent-Guided Rationalization), guiding the next action of the mod…

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