Patent ID: 6343266
Filing Date: 2002-01-29
Classification: G06F,G10L

Abstract:
An anaphora analyzing apparatus comprising:analyzing means for analyzing an input natural language sentence and outputting analyzed results; storing means for storing the analyzed results outputted from said analyzing means; antecedent candidate generating means for detecting a target component in the input natural language sentence required for anaphora analysis in accordance with the current analyzed results outputted from said analyzing means and the past analyzed results stored in said storing means, and for generating antecedent candidates corresponding to said target component; candidate rejecting means for rejecting unnecessary candidates having no potential for anaphora referential relation among the antecedent candidates generated by said antecedent candidate generating means by using a predetermined rejecting criterion, and for outputting the remaining antecedent candidates, said rejecting criterion being of a decision tree obtained by using a machine training method in accordance with a training tagged corpus to which predetermined word information is given for each word of the training tagged corpus; preference giving means for calculating a predetermined estimated value for each of the remaining antecedent candidates outputted from said candidate rejecting means, by referring to an information table including predetermined estimation information obtained from a predetermined further training tagged corpus, for giving the antecedent candidates preference in accordance with the calculated estimated value, and for outputting preferenced antecedent candidates; and candidate deciding means for deciding and outputting a predetermined number of antecedent candidates based on the given preference in accordance with the preferenced antecedent candidates outputted from said preference giving means.