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arXiv · 1910.00290

Identifying Supporting Facts for Multi-hop Question Answering with Document Graph Networks

Mokanarangan Thayaparan·Marco Valentino·Viktor Schlegel·Andre Freitas
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Abstract

Recent advances in reading comprehension have resulted in models that surpass human performance when the answer is contained in a single, continuous passage of text. However, complex Question Answering (QA) typically requires multi-hop reasoning - i.e. the integration of supporting facts from different sources, to infer the correct answer. This paper proposes Document Graph Network (DGN), a message passing architecture for the identification of supporting facts over a graph-structured representation of text. The evaluation on HotpotQA shows that DGN obtains competitive results when compared to a reading comprehension baseline operating on raw text, confirming the relevance of structured representations for supporting multi-hop reasoning.

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Mokanarangan Thayaparan, Marco Valentino, Viktor Schlegel, Andre Freitas. 2019-10-01. Identifying Supporting Facts for Multi-hop Question Answering with Document Graph Networks. https://arxiv.org/abs/1910.00290

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