Abstract
This paper proposes a new way of extracting answers to some kinds of queries based on Rhetorical Structure Theory (RST). For each type of question, we assign one or more rhetorical relations that help extract the corresponding answers. We use ternary expressions which are successfully applied in the well-known question answering system START to represent text segments, index documents and queries. The cosine measure is used in the matching process. The experiment with RST Discourse Treebank shows that the results of ternary-expression-based indexing are better than those of keyword-based indexing.
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© 2006 Springer-Verlag Berlin Heidelberg
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Tri, N.T., Shimazu, A., Anh, L.C., Le, N.M. (2006). Applying RST Relations to Semantic Search. In: Sojka, P., Kopeček, I., Pala, K. (eds) Text, Speech and Dialogue. TSD 2006. Lecture Notes in Computer Science(), vol 4188. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11846406_24
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DOI: https://doi.org/10.1007/11846406_24
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-39090-9
Online ISBN: 978-3-540-39091-6
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