2011 Fiscal Year Final Research Report
Analyisis of Search Engines' Trustworthiness
| Project/Area Number |
21300038
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Media informatics/Database
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| Research Institution | Waseda University |
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Principal Investigator |
YAMANA Hayato 早稲田大学, 理工学術院, 教授 (40230502)
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| Co-Investigator(Renkei-kenkyūsha) |
MATSUYAMA Yasuo (60125804)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 検索エンジン / 信頼性 / 情報検索 / ヒット数 / 信憑性 / ランキング |
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| Research Abstract |
Nowadays, search engines become indispensable for us to live a life ; however, trustworthiness of search engines are unclear. Especially, the number of search results, i. e., hit-count, usually varies about 100 to 1000 times increase or decrease even if we put them the same query word. In this research, we have made clear the transition characteristics of hit-counts based on 15 months investigation for Google, Yahoo! JAPAN and Bing. Moreover, we have proposed a new method to choose trustworthy hit-counts, which results in 99.5% precision when we compare two hit-counts on the point which query word has larger number of search results.
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[Remarks] 取材協力(1)山名早人,ワールドビジネスサテライト,日本からグーグルに挑戦,テレビ東京, 2011/5/18
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[Remarks] (2)山名早人,検索寡占進む@日本ヤフーとグーグル提携発表,朝日新聞, 2010/7/28, 2面
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[Remarks] (3)山名早人,検索サービスはGoogleを超えた!?,日経トレンディ2009年9月号, pp.134-139
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[Remarks] (4)山名早人,検索新技術「巨人に挑む」,朝日新聞, 2009/7/17, 18面
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[Remarks] (5)山名早人,近未来型「計算知識エンジン」ウルフラムアルファの頭脳, R25. jp, 2009/6/18版
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[Remarks] アウトリーチ活動(1)山名早人,検索エンジンは信頼できるか?,早稲田大学理工展サイエンスカフェ, 2011/11/6
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