著者

山下 泰弘 西澤 正己 孫 媛 根岸 正光

出版者

情報知識学会

雑誌

情報知識学会研究報告会講演論文集 情報知識学会 第8回(2000年度)研究報告会講演論文集 (ISSN:24329908)

巻号頁・発行日

pp.5-12, 2000 (Released:2017-09-19)

参考文献数

2

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In recent years, research evaluation is becoming one of the major topics of governmental science policy. Along with this trend, citation analyses attract great attention as a tool for quantitative measure of quality of research output. We report some results of an analysis on the characteristics of citations in academic disciplines, based on the ISI citation statistic database : National Citation Report (NCR). This database contains bibliographies of articles written by authors affiliating to Japanese institutes from January 1981 to June 1997,with yearly citation counts. First, we analyze frequency distributions of citations by academic disciplines, and then investigate changes of citation counts per article through the years after the publication. Finally, we classify all disciplines into four types by the two indices : number of papers and cited times per article.

著者

福島 俊一 松田 勝志 高野 元

出版者

情報知識学会

雑誌

情報知識学会研究報告会講演論文集 情報知識学会 第7回(1999年度)研究報告会講演論文集 (ISSN:24329908)

巻号頁・発行日

pp.77-80, 1999 (Released:2017-09-18)

参考文献数

6

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This paper surveys page ranking factors used in the current WWW search engines, such as (1) relevance to query keywords, (2) freshness, (3) popularity, (4) citation rank and (5) page types. The relevance to query keywords have been studied in the traditional information retrieval researches. However, other factors are introduced into the WWW search engines in order to improve their ranking performance, because WWW contents are heterogeneous and changeable large-scale hypermedia. The freshness, the popularity and the citation rank are the factors introduced from a viewpoint of contents reliability. On the other hand, the relevance to query keywords and the page types are the ones corresponding to user's domain and task in problem solving. Selection and combination of these factors must be refined for satisfying user's information needs.

著者

猪股 優 長内 隆 後藤 智範 山本 晴彦

出版者

情報知識学会

雑誌

情報知識学会研究報告会講演論文集 情報知識学会 第10回(2002年度)研究報告会講演論文集 (ISSN:24329908)

巻号頁・発行日

pp.47-51, 2002 (Released:2017-09-21)

参考文献数

6

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There are typical three kinds of of Amino acid Sequence Databases, PDB, pdb-aa, nr-aa. Originally these databases have their own format. However, each format seems as records of data, is not effective for advanced research such as homological search for amino acid sequences of proteins, ORF prediction. Experimental construction of XML database have been under construction to these databases for the purpose of efficient usage in related area. This paper reports the characteristics and problems on these databases.

著者

岸田 和明 松井 幸子

出版者

情報知識学会

雑誌

情報知識学会研究報告会講演論文集 情報知識学会 第3回(1995年度)研究報告会講演論文集 (ISSN:24329908)

巻号頁・発行日

pp.41-46, 1995 (Released:2017-09-16)

参考文献数

7

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A scientometric analysis of social science research is tried by using the machine-readable files of the IBSS 1981-1985, which is one of the comprehensive international bibliographies in social sciences including cultural anthropology, economics, political science and sociology. Data used are 40,313 monograph records in the IBSSfile. First, we try to compare the number of scholarly monographs published by each country. As a result, it is shown that a large portion of monographs was published by only a small portion of countries. Second, we examine the correlation among the number of published mono- graphs, GDP and socio-demographic factors such as population and the number of people attaining the education level provided at university. A regression model that incorporates GDP as explanatory variable explains well the variation of the number of monographs by countries (R^2=0.769).