Evaluating Credibility of Web Information

Subject-B: Research on Temporal Analysis of Semantic Contents

NEC

[English|Japanese]
9/1/2009

Chronological Perspective (NEC)

NEC is developing two technologies based on the temporal analysis of Web pages related to input statements:

  • change factor extraction: extraction of trigger events that stimulated people's interest in the input statement and changed its reputation based on the temporal changes of related documents on the Web
  • out-of-date information detection: detection of old and invalid information based on the temporal changes of related documents on the Web


Change Factor Extraction

Our purpose is to detect changes in people's opinions and extract such factors by chronological analysis of Web pages. For example, a user interested in diet A inputs, "diet A is effective." Then our system presents a feature on a TV program that reports that "A famous TV personality lost weight on diet A" as a factor to change the opinions that convince many people to believe that diet A is effective. The system reveals the obscure causes of opinion changes and allows users to judge the credibility of opinions based on the background reasons that justify them.

Out-of-date Information Detection

Our system supports user credibility judgments by detecting statements that involve old and invalid objects. Such objects are accurately detected by extracting arguments that represent their invalidity and analyzing the temporal changes of arguments related to the objects on Web pages. This out-of-date information detection method prevents users from trusting old and invalid information.

Publication

  • 中澤聡, 安藤真一, 岡嶋穣, 村上浩司, 松吉俊, 乾健太郎, 松本裕治, 渋木英潔, 中野正寛, 宮崎林太郎, 石下円香, 鈴木貴子, 森辰則,"情報信頼性判断支援のためのWeb関連情報分析システム", けいはんな情報通信オープンラボシンポジウム 2008 (Japanese)
  • Shin-ichi Ando, Kentaro Inui, Madoka Ishioroshi, Yuji Matsumoto, Suguru Matsuyoshi, Rintaro Miyazaki, Tatsunori Mori, Koji Murakami, Masahiro Nakano, Satoshi Nakazawa, Yuzuru Okajima, Hideyuki Shibuki, Takako Suzuki, "Information credibility survey reporting: A prototype system and project roadmap", Second International Symposium on Universal Communication (ISUC2008)
  • 中澤聡, 岡嶋穣, 大西貴士, 河合剛巨, 安藤真一, "時系列分析によるＷｅｂ文書の情報信頼性判断支援：全体概要", 言語処理学会第15回年次大会発表論文集, pp.100-103, 2009. (Japanese)
  • 大西貴士, 岡嶋穣, 河合剛巨, 中澤聡, 安藤真一, "時系列分析によるＷｅｂ文書の情報信頼性判断支援：時系列変化からの重要トピックの抽出", 言語処理学会第15回年次大会発表論文集, pp.104-107, 2009. (Japanese)
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