METHOD AND DEVICE FOR CORRELATIVE ITEM DETECTION

摘要

PROBLEM TO BE SOLVED: To speed up correlative item detection by extracting only the correlation between items having different properties (genre) by using an access history. SOLUTION: Customer identifier lists of customers accessing items are extracted as related customer lists from the access history by item identifiers of an analysis source item list as a detection source item group, and the item identifiers of the items that the customers are accessing are extracted as a related item list from the access history by the customer identifiers of the related customer lists. Item properties of respective item identifiers of the analysis source item list are compared with item properties by the item identifiers of the related item list and item identifiers having different item properties are extracted as a related item list.