Keyword extracting device

G - Physics – 06 – F

Patent

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Details

G06F 17/30 (2006.01)

Patent

CA 2362416

The object of the present invention is to obtain a keyword extracting device which extracts keywords collectively and efficiently while improving descriptive property and reusability of the information for keyword extracting. A keyword extracting device of the present invention comprises text data input means for inputting a text, pattern processing means for carrying out matching and replacement of a character string based on a pattern in regular expression or its equivalent, pattern storage means having at least a keyword component pattern representing a character string capable of being a component of a keyword, keyword component extracting means for extracting, as keyword components, all character strings which are matched with a keyword component pattern and are not overlapped with each other by using the pattern processing means for a text, keyword candidate set generating means for generating a keyword candidate set from each keyword component, and keyword output means for outputting each keyword candidate of a keyword candidate set as a keyword.

L'invention porte sur un dispositif permettant d'extraire de manière précise et efficace un mot-clé et d'améliorer simultanément la pertinence et la réutilisabilité des informations concernant l'extraction du mot-clé. Le dispositif possède un organe d'introduction de texte, un organe de traitement de structure pour faire correspondre et remplacer une chaîne de caractères à l'aide d'une expression normale ou d'une structure équivalente, un organe de stockage de structure. Au moins une structure d'élément constituant un mot-clé représente une chaîne de caractères qui peut être un élément constituant d'un mot-clé, un dispositif d'extraction destiné à extraire comme éléments constituants de mot-clé toutes les chaînes de caractères correspondant à une structure d'élément constituant un mot-clé et ne se chevauchant pas à partir d'un texte, à l'aide de l'organe de traitement de mot-clé, un générateur qui génère l'ensemble de candidats de mots-clés à partir des éléments constituant le mot-clé et un organe de sortie qui restitue comme mot-clé chaque candidat de mot-clé de l'ensemble des candidats de mots-clés.

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