« 「ネットで百科」 における 「テーマ地図検索」 の機能と実装法 | メイン | A Method of Geographical Name Extraction from Japanese Text for Thematic Geographical Search »

Methods of Extracting Year References for Chronological-table-generating Text Searching

Kanada, Y., International Symposium on Digital Library 1999, pp. 135-142, 1999.

[ English page ]
[ 論文 PDF ファイル ] [ 論文 PostScript ファイル ]

要約: A method of extracting year references for a textual information retrieval method called the thematic chronological-table search method is explained in this paper. This search method generates an index by extracting and collecting year references from a text collection. The resulting index and a full-text index are used for searching statements that contain year references and search words. The results are displayed in the form of a chronological table with hyperlinks to the original text. Seven forms of year or century references are extracted and normalized using string matching patterns. The extraction error rate is reduced by using both local and nonlocal contexts. If the lower two digits of a Gregorian year, which matches a form, occurs, it is normalized by supplementing the upper digits using the non-local context. This method has been applied to a Japanese encyclopedia. An evaluation shows the precision of extraction to be higher than 99% in most cases.

研究テーマ紹介: 軸づけ検索 (テーマ検索)

キーワード: テキスト検索, 軸づけ検索, 軸付け検索, テーマ年表検索, 年代軸検索, 時間軸検索, 百科事典検索, 年代情報抽出, 情報組織化, 検索結果組織化, 組織化検索, 整列, 検索結果構造化, 構造化検索

コメントを投稿

About

1999-09-28 00:00に投稿されたエントリーのページです。

他にも多くのエントリーがあります。メインページアーカイブページも見てください。

(C) 2008 by Yasusi Kanada
Powered by
Movable Type 3.36