Patent ID: 7398202

Claim:
An information-processing apparatus comprising: an input unit that inputs text data; a text-data-memory unit that stores said text data; a word-cutting unit that executes a word-cutting process on said text data; a syntax-analysis unit that performs a syntax-analysis process on said text data on which said word-cutting process was performed; a thesaurus-creation unit that creates thesauruses from said text data on which said syntax-analysis process was performed; a thesaurus-memory unit that stores said thesauruses created by said thesaurus-creation unit; a thesaurus-sorting unit that performs a sorting process on said text data on which said word-cutting and said syntax-analysis were performed; a sorting-results-memory unit that stores the sorting results from said thesaurus-sorting unit; a frequency-of-appearance-calculation unit that calculates the frequency of appearance for each thesaurus based on said sorting results stored by said sorting-results-memory unit; a frequency-of-appearance-memory unit that stores the results calculated by said frequency-of appearance-calculation unit; a correlation-coefficient-calculation unit that calculates correlation coefficients between thesauruses; a correlation-coefficient-memory unit that stores the correlation coefficients between thesauruses that were calculated by said correlation-coefficient-calculation unit; a correlation-coefficient-total-calculation unit for each thesaurus that calculates the total of the correlation coefficients for each thesaurus; a correlation-coefficient-total-memory unit for each thesaurus that stores the total of the correlation coefficients for each thesaurus calculated by the correlation-coefficient-total-calculation unit for each thesaurus; and a graph-creation-display unit that creates and displays a graph based on the frequency of appearance stored by the frequency-of-appearance-memory unit and the correlation-coefficient totals for each thesaurus stored by the correlation-coefficient-total-memory unit for each thesaurus; and wherein said word-cutting unit and said syntax-analysis unit perform said word-cutting process and said syntax-analysis process again based on said thesauruses created by said thesaurus-creation unit.