EVALUATION METHOD AND DEVICE FOR OCCURRENCE OF SEMANTIC DRIFT

摘要

PROBLEM TO BE SOLVED: To provide an evaluation method and an evaluation device which recognize that semantic drift occurs.;SOLUTION: The semantic drift occurrence evaluation device 1 is provided with: an instance extraction part 11 for extracting a new instance; a repetitive execution control part 12 for controlling the repetitive execution of the instance extraction part 11 using an instance group newly extracted by the instance extraction part 11 by a boot strap algorithm; a relevant keyword extraction part 13 for extracting the relevant keywords of an instance; a vector generation part 14 for generating relevant keyword vectors by assigning numeric values to the relevant keywords; and a semantic drift evaluation part 15 for evaluating the extent of semantic drift in each repetition based on the relevant keyword vectors applied to the relevant keywords in each repetition.;COPYRIGHT: (C)2010,JPO&INPIT