Finding Salient Context based on Semantic Matching for Relevance Ranking

09/03/2019

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by   Yuanyuan Qi, et al.

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Beijing University of Posts and Telecommunications

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Beijing University of Technology

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In this paper, we propose a salient-context based semantic matching method to improve relevance ranking in information retrieval. We first propose a new notion of salient context and then define how to measure it. Then we show how the most salient context can be located with a sliding window technique. Finally, we use the semantic similarity between a query term and the most salient context terms in a corpus of documents to rank those documents. Experiments on various collections from TREC show the effectiveness of our model compared to the state-of-the-art methods.