Text mining method and apparatus for extracting features of documents
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United States of America Patent
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Apr 19, 2005
Grant Date -
Mar 14, 2002
app pub date -
May 31, 2001
filing date -
Jun 29, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Concerning feature extraction of documents in text mining, a method and an apparatus for extracting features having the same nature as those by LSA are provided that require smaller memory space and simpler program and apparatus than the apparatus for executing LSA. Features of each document are extracted by feature extracting acts on the basis of a term-document matrix updated by term-document updating acts and of a basis vector, spanning a space of effective features, calculated by basis vector calculations. Execution of respective acts is repeated until a predetermined requirement given by a user is satisfied.
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