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検索目的を反映したカテゴリ構造の構築によるWWW文書検索支援

通过构建反映搜索目的的类别结构来支持 WWW 文档搜索

基本信息

批准号：
12780310
负责人：
高田善朗
金额：
$ 1.6万
依托单位：
Nara Institute of Science and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Encouragement of Young Scientists (A)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2001
项目状态：
已结题

项目摘要

本研究では,WWW文書検索に適用可能な新しい対話的情報検索手法を提案した.この手法は,システム内に予め用意した多数の分類観点を用い,(1)システムによる,利用者の検索目的に合うと思われる候補分類観点の選択,(2)候補分類観点の中からの利用者による選択,を繰り返すことで,動的にカテゴリ構造を構築するものである.試作システムを用いて次の2種類の評価実験を行った.(1)利用者がある決まった戦略に基づいて操作すると仮定し,そのように操作したとき得られる検索精度を調べる.(2)実際に被験者を募って検索作業をしてもらい,得られた検索精度や操作時間,使用感などを調べる.提案手法に基づくシステム,および,比較対象として,単純なキーワード検索方式のシステム,分類観点ではなく統計的手法(クラスタリング)を使って文書分類を行うシステムに対して実験を行った.実験により次の結果が得られた.(1)効率:提案手法の方が,同じ再現率を得るための操作時間が短い.(2)使いやすさ:キーワード検索に慣れている被験者がほとんどだったが,提案手法はキーワード検索手法と同程度の主観評価値を得た.また,最終的に得られる文書一覧に対し,一覧上での文書の順位付けを利用者の検索意図に合うようにする方法として,対話的に順位付けを調整させる手法を提案した.これは上述の動的カテゴリ構造構築手法とは独立しており,従来のキーワード検索手法など他の手法と組み合わせることができる.上述した実験と同様の評価実験を行い,その結果,提案手法を用いて順位付けを調整することで,(1)上位文書の適合率を上げることはできないが,下位の埋もれた適合文書を選択的に上位に持ち上げることができる,(2)適合文書の順位が上がり,不適合文書の順位が下がる,ことがわかった.

In this study, WWW articles use emotional techniques that may lead to new conversations. In this way, it is intended that most of the information should be classified, (1) that the user would like to use it, and that the user would like to use it in accordance with his or her consideration. (2) in the waiting list, the user should choose the candidate, the user would like to return the message, and the user would like to use it. In order to improve the accuracy of the operation, the user decides to improve the accuracy of the operation. (2) if you want to improve the accuracy of the operation, you can use the information system to improve the accuracy of the operation. (1) the user decides to improve the accuracy of the operation. (2) if you need to improve the accuracy of the operation, use the information system. The method of proposing a proposal is more accurate than that of the general public, and the method of information collection and statistics (the method of statistics) makes it possible to classify the text into different categories. The results show that the results are satisfactory. (1) the rate of failure: the method of proposal is different, and the rate of re-negotiation at the same time is that the operating time of the bill is short. (2) to make sure that the person who is not allowed to pay the bill is not allowed to do so, and that the method of the proposal is successful in the same degree. As soon as you get the most expensive information, the most expensive text, the most expensive text, the most expensive information, the most expensive, the In connection with the above-mentioned activities, we have made an independent report on the operation of the above-mentioned operation, and we have come to learn about the use of other methods and the organization of other techniques. According to the results, the method of the proposal is to use the position to pay the price to rectify the problem. (1) the rate of integration of the upper document is higher than that of the previous one. The upper position of the election of the lower one holds the title of the election, and (2) the position of the combination of the text and the text does not match the position of the text. I don't know what to do.