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Authors: Tomohiro Manabe and Keishi Tajima

Affiliation: Kyoto University, Japan

ISBN: 978-989-758-186-1

Keyword(s): Subtopic Mining, Hierarchical Heading Structure, Web Search, Search Result Diversification, Search Intent.

Related Ontology Subjects/Areas/Topics: Enterprise Information Systems ; Recommendation Systems ; Software Agents and Internet Computing

Abstract: We propose methods for generating diversified rankings of subtopics of keyword queries. Our methods are characterized by their awareness of hierarchical heading structure in documents. The structure consists of nested logical blocks with headings. Each heading concisely describes the topic of its corresponding block. Therefore, hierarchical headings in documents reflect the hierarchical topics referred to in the documents. Based on this idea, our methods score subtopic candidates based on matching between them and hierarchical headings in documents. They give higher scores to candidates matching hierarchical headings associated to more contents. To diversify the resulting rankings, every time our methods adopt a candidate with the best score, our methods exclude the blocks matching the candidate and re-score all remaining blocks and candidates. According to our evaluation result based on the NTCIR data set, our methods generated significantly better subtopic rankings than query comple tion results by major commercial search engines. (More)

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Paper citation in several formats:
Manabe, T. and Tajima, K. (2016). Subtopic Ranking based on Hierarchical Headings.In Proceedings of the 12th International Conference on Web Information Systems and Technologies - Volume 2: WEBIST, ISBN 978-989-758-186-1, pages 121-130. DOI: 10.5220/0005812401210130

@conference{webist16,
author={Tomohiro Manabe. and Keishi Tajima.},
title={Subtopic Ranking based on Hierarchical Headings},
booktitle={Proceedings of the 12th International Conference on Web Information Systems and Technologies - Volume 2: WEBIST,},
year={2016},
pages={121-130},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005812401210130},
isbn={978-989-758-186-1},
}

TY - CONF

JO - Proceedings of the 12th International Conference on Web Information Systems and Technologies - Volume 2: WEBIST,
TI - Subtopic Ranking based on Hierarchical Headings
SN - 978-989-758-186-1
AU - Manabe, T.
AU - Tajima, K.
PY - 2016
SP - 121
EP - 130
DO - 10.5220/0005812401210130

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