新聞の用字の面による変動と時系列変動

  • 久野 雅樹
    電気通信大学電気通信学部人間コミュニケーション学科

書誌事項

タイトル別名
  • Page-type and time-series variations of a newspaper's character occurrence rate
  • シンブン ノ ヨウジ ノ メン ニ ヨル ヘンドウ ト ジケイレツ ヘンドウ

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抄録

Using 1991-1997 Mainichi Shimbun Newspaper's CD-ROMs containing about 340 million characters, nature of character use was explored. Significant differences of mean occurrence rates among 16 page-types (e. g., editorial, sports, local) were observed in 69.2%of 5, 726 character types that covered all the cases in the corpus except a space character. Similarly, 20.3%of those showed significant month-level (seasonal) variations of occurrence rates, and 43.9% showed significant year-level variations (trends). Limited to frequent 2, 732 character types that severally accounted for more than 0.001%o of the corpus, these tendencies became more clearly: rates of character types that showed significant variations of occurrence rates by page-types, month-levels, and year-levels were 98.4, 33.5, and 76.0%respectively. These results suggest that there could be a vast range of systematic variations in lexical use, which have been overlooked in simple summing-up of mass corpuses.

収録刊行物

  • 自然言語処理

    自然言語処理 7 (2), 45-61, 2000

    一般社団法人 言語処理学会

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