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Morphological analyzer, natural language processor, morphological analysis method and program

  • US 7,684,975 B2
  • Filed: 02/12/2004
  • Issued: 03/23/2010
  • Est. Priority Date: 02/12/2003
  • Status: Active Grant
First Claim
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1. A method of performing morphological analysis on a natural language text string using a computer having a memory, the method comprising:

  • selecting, using a processor, whether or not to decompose a decomposable complex word in response to a request from a natural language processing application that utilizes a morphological analysis result;

    receiving the natural language text string to be processed, wherein the text string is in an agglutinative language and comprises more than one complex word, wherein each complex word comprises a linguistic unit having a semantic meaning;

    decomposing the received text string into tokens and storing the tokens in a work area of the memory;

    when it is selected not to decompose a decomposable complex word, determining whether each token is decomposable;

    if a token is not decomposable, registering the non-decomposable token on a token list stored in a given area of the memory;

    generating token strings based on the token list and storing the token strings in the work area of the memory;

    selecting optimum token strings from the generated token strings; and

    outputting the selected optimum token strings to the natural language processing application for further processing.

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