地理情報検索のためのスニペット生成法  [in Japanese] Snippet Generation for Geographic Information Retrieval  [in Japanese]

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Author(s)

    • 戸田 浩之 TODA Hiroyuki
    • 日本電信電話株式会社, NTTサイバーソリューション研究所 NTT Cyber Solutions Laboratories, NTT Corporation
    • 安田 宜仁 YASUDA Norihito
    • 日本電信電話株式会社, NTTサイバーソリューション研究所 NTT Cyber Solutions Laboratories, NTT Corporation
    • 奥村 学 OKUMURA Manabu
    • 東京工業大学, 精密工学研究所 Precision and Intelligence Laboratory, Tokyo Institute of Technology
    • 片岡 良治 KATAOKA Ryoji
    • 日本電信電話株式会社, NTTサイバーソリューション研究所 NTT Cyber Solutions Laboratories, NTT Corporation

Abstract

Geographic information retrieval (GIR) aims at the retrieval of geographic-related documents based through the use of not only on keyword relevance but also on geographic relationships between the query and the geographic information in the texts. However, how to show search results in GIR has not been studied well, especially with regard to generating snippets that reflect the geographic part of the query. This paper proposes a novel snippet generation method. Our method first converts geographic phrases in the target text into geographic coordinates, then scores each of them according to their distance from the query using the coordinates. Next, it extracts fragments of the target text based on the distribution of the query keyword and geographic scores, and presents the combined fragments as a snippet. Evaluations are conducted with regard to two different aspects. Both attributes confirm the effectiveness of our method.

Journal

  • Transactions of the Japanese Society for Artificial Intelligence

    Transactions of the Japanese Society for Artificial Intelligence 24(6), 494-506, 2009

    The Japanese Society for Artificial Intelligence

Cited by:  3

Codes

  • NII Article ID (NAID)
    130000137885
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    1346-0714
  • Data Source
    CJPref  J-STAGE 
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