1. A system comprising: a processor configured to: receive property information of selected products input by users; search and locate 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, wherein at least some of the set of one or more products in the SPU are associated with different product listings; generate behavior data, including by determining a cumulative number of one or more types of behavioral instances performed by a plurality of users with respect to each product in the set of products included in the SPU, wherein to generate behavior data includes: configuring corresponding relationships between the cumulative number of behavioral data and the SPU; and generating a basic behavior data table, in which correspondence between the cumulative number of behavioral data and the SPU is included; output the behavior data; and a memory coupled to the processor, configured to provide the processor with instructions.