Simple yet Effective Bridge Reasoning for Open-Domain Multi-Hop Question Answering
Table 1: Answer passage prediction performance, measured by Hits@10 on dev bridge questions.
['Approach', 'Hits@10']
Overall, the bridge reasoner retrieves the answer passage with significantly higher accuracy than HotpotQA’s IR method. We also see that the local context evidence is more effective than the passage content evidence for answer passage prediction. Since conventional IR methods also use passage content for ranking, the results here validate our assumption that the bridges can be better inferred by reading the context of the start passages.