意見保有者の判別 : NTCIR意見分析タスクにおける試み  [in Japanese] Opinion Holder Identification : Challenge at the NTCIR Opinion Analysis Task  [in Japanese]

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Author(s)

Abstract

意見を表明する主体である意見保有者の判別は,意見分析研究の中では比較的新しい試みであり,見方を区別した意見の集約が期待できる研究である.本稿では,意見文における著者と第三者の観点の違いを,書き方のスタイルに着目することで区別する新しい意見保有者判別手法を提案する.NTCIR-6意見分析タスクでは,意見保有者の判別をサブタスクとして設定し,参加者の判別技術を評価した.その結果,提案手法は,日本語に関しては一定の精度が得られた.英語に関しては,コーパスの分析を通して,著者が意見保有者となる場合の書き方の傾向を明らかにし,提案手法を改善した.

Opinion holder identification research is important for discriminating between opinions that are viewed from different perspectives. We propose a new opinion holder identification method based on discrimination between author and authority viewpoints in opinionated sentences, by utilizing writing style differences. This discrimination, although the researchers have not focused on it, is important for identifying opinion holders correctly. We describe our experience of participating in the NTCIR-6 Opinion Analysis Task by focusing on opinion holder identification results in Japanese and English. The evaluation results showed that our system performed fairly well with respect to Japanese documents, and postsubmission analysis also revealed that improvements could be made with respect to English documents.

Journal

  • IEICE technical report

    IEICE technical report 107(480), 13-18, 2008-02-07

    The Institute of Electronics, Information and Communication Engineers

References:  18

Codes

  • NII Article ID (NAID)
    110006935905
  • NII NACSIS-CAT ID (NCID)
    AN10091225
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    09135685
  • NDL Article ID
    9413074
  • NDL Source Classification
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL Call No.
    Z16-940
  • Data Source
    CJP  NDL  NII-ELS 
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