Title:
KEYWORD ALLOCATING SYSTEM
Document Type and Number:
Japanese Patent JP3220885
Kind Code:
B2
Abstract:
PURPOSE: To provide a system capable of automatically extracting almost all key words by utilizing document data in plural fields and the appearance frequency of each word in each field.
CONSTITUTION: Each document data (a) are divided into words by a document data word dividing part 1, the divided words are stored in a word division table (b) and the appearance frequency of each word in each document data is detected by a word appearance frequency detecting part 2 and registered in a word appearance frequency table (c). The appearance frequency of each word in each field is found out based upon the table (c) and registered in a field-sorted appearance word totalizing table by a field-sorted word appearance frequency totalizing part 3, a key word in each field is extracted from the document data by means of a key word unnecessary word dictionary) 4 based upon the appearance frequency of the totalizing table, an unnecessay word which is not a key word in each field is extracted by an unnecessary word extracting part 5, and the extracted key word in each field and the unnecessary word are registered in a key word/ unnecessary word dictionary (d). At the time of allocating a key word to document data, key words and unnecessary words stored in the dictionary (d) are referred to, a word to be a keyword is extracted from words in the document data to which the key word is to be allocated and the extracted key word is allocated to the document data by a key word allocating part 7.
Inventors:
Tadahiro Kiyama
Hiroshi Tsuji
Hiroshi Tsuji
Application Number:
JP17246493A
Publication Date:
October 22, 2001
Filing Date:
June 18, 1993
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G06F12/00; G06F17/30; (IPC1-7): G06F17/30
Domestic Patent References:
| JP57182279A | ||||
| JP2148265A | ||||
| JP1112331A |
Other References:
原「出現度数と分野情報を利用したキーワード抽出法の検討」情報処理学会第４３回（平成３年後期）全国大会講演論文集（３）ｐ．１８５−１８６（平３−１０−１９）
長尾，水谷，池田「日本語文献における重要語の自動抽出」情報処理，Ｖｏｌ．１７，Ｎｏ．２，１９７６，ｐ．１１０−１１７（昭５１−２−１５）
長尾，水谷，池田「日本語文献における重要語の自動抽出」情報処理，Ｖｏｌ．１７，Ｎｏ．２，１９７６，ｐ．１１０−１１７（昭５１−２−１５）
Attorney, Agent or Firm:
Shigeru Sasaoka (1 person outside)