METHOD AND DEVICE FOR CLASSIFYING INFORMATION BASED ON INTEREST OF USER AND STORAGE MEDIUM RECORDING PROGRAM FOR CLASSIFYING INFORMATION BASED ON INTEREST OF USER

PROBLEM TO BE SOLVED: To retrieve information based on the interest of each user and to automatically classify the information while being reflected with the interest at that time even when the interest of the user is dynamically changed. SOLUTION: At a separate category generating part 5, the number of information corresponding to a keyword extracted from all the information capable of grasping the entire quantity is compared with the number of information read by a user corresponding to that keyword within that range, the level of interest is calculated concerning all the keywords and the category of classification is prepared concerning high-order N pieces of the keywords successively from the keyword of the high interest level. At a high-order hierarchy preparing part 6, the relation degree of the keywords is calculated concerning all the combination of two keywords as well, two keywords having the high relation degree are made into a group and the high-order hierarchy of the classification category is prepared.