Compositional Questions Do Not Necessitate Multi-hop Reasoning
Table 5: The accuracy of single-paragraph BERT in different open-domain retrieval settings. TF-IDF often fails to retrieve the gold paragraphs even when using 500 candidates.
['[BOLD] Setting', '[BOLD] F1']
We largely attribute this to the insufficiencies of standard TF-IDF retrieval for multi-hop questions. In this context, we suggest that future work can explore better retrieval methods for multi-hop questions.