PORTABLE COMMUNICATION TERMINAL FOR EXTRACTING SUBJECTS OF INTEREST TO THE USER, AND A METHOD THEREFOR

摘要

A portable communication device for extracting a user interest includes a term vector generation unit, a subject classification tree storage unit, and a similarity calculation unit. The term vector generation unit generates, based on types of text data stored in the portable communication device, a term vector representing each text data. The subject classification tree storage unit stores a subject classification tree. The subject classification tree is a tree structure having multiple nodes that are connected to one another, each node including at least one training data and representing a subject. The similarity calculation unit calculates a similarity between the term vector and the training data for each node in the subject classification tree. And the similarity calculation unit extracts a node name representing the user interest from the subject classification tree based on the similarity.