Keyword extracting device
First Claim
1. A keyword extracting device comprising:
- 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 the keyword component pattern and are not overlapped with each other by using the pattern processing means for the 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 the keyword candidate set as a keyword.
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Abstract
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.
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Citations
38 Claims
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1. A keyword extracting device comprising:
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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 the keyword component pattern and are not overlapped with each other by using the pattern processing means for the 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 the keyword candidate set as a keyword. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A keyword extracting device comprising text data input means for inputting a text,
part-of-speech analyzing means to analyze a part-of-speech of each word in the input text, keyword candidate set generating means for generating, as a keyword candidate, a word string corresponding to a prescribed sequence of part-of-speeches from a result of the part-of-speech analyzing, and keyword output means for outputting each keyword candidate of the keyword candidate set as a keyword.
Specification