1. A system comprising: a processor configured to: receive property information of selected products input by users; search and locating a Standard Property Union (SPU) corresponding to the property information in a database, the SPU comprising a set of one or more products sharing a set of one or more properties; generate behavior data, including by summarizing a cumulative number of behavioral instances associated with each product in the set of products included in the SPU; output the behavior data; and a memory coupled to the processor, configured to provide the processor with instructions.