Patent ID: 6173251
Filing Date: 2001-01-09
Classification: G06F,Y10S

Abstract:
A keyword extraction apparatus comprising:a technical term storage means for storing technical terms with proper expressions and different expressions thereof,a basic word storage means for storing general basic words of high frequency,an input means through which a sentence is input,a technical-term segmentation point setting means for, when any of the technical terms stored in said technical term storage means exists in the sentence input through said input means, cutting out a range of that technical term from the input sentence,a proper-expression replacing means for, when the technical term cut out by said technical-term segmentation point setting means is written in a different expression, replacing the different expression by a corresponding proper expression,a character-type segmentation point setting means for detecting a difference in character type in the input sentence,a basic-word segmentation point setting means for cutting out, from the input sentence, a range of any of the basic words stored in said basic word storage means,a partial character string cutting means for cutting out partial character strings based on segmentation points set by said technical-term segmentation point setting means, said character-type segmentation point setting means and said basic-word segmentation point setting means, andan output means for outputting, as keywords, the partial character strings cut out by said partial character string cutting means.