资源论文Taking up the Gaokao Challenge: An Information Retrieval Approach

Taking up the Gaokao Challenge: An Information Retrieval Approach

2019-11-22 | |  48 |   37 |   0
Abstract Answering questions in a university’s entrance examination like Gaokao in China challenges AI technology. As a preliminary attempt to take up this challenge, we focus on multiple-choice questions in Gaokao, and propose a three-stage approach that exploits and extends information retrieval techniques. Taking Wikipedia as the source of knowledge, our approach obtains knowledge relevant to a question by retrieving pages from Wikipedia via string matching and context-based disambiguation, and then ranks and filters pages using multiple strategies to draw critical evidence, based on which the truth of each option is assessed via relevancebased entailment. It achieves encouraging results on real-life questions in recent history tests, significantly outperforming baseline approaches.

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