CONSUMER INFORMATION PROCESSING APPARATUS

PROBLEM TO BE SOLVED: To succeed and use attributes of a plurality of units by smoothly and certainly succeeding to a result of past clustering even when a consumed commodity configuration changes by the lapse of time. SOLUTION: An information processing apparatus 400 generates a first characteristic vector in each consumer by use of singing history information obtained from a singing history database 3131. The information processing apparatus 400 applies association between a consumer ID and a unit previously stored in a preference database 3132 correspondingly to the result of the previously executed clustering to the first characteristic vector generated in each consumer, and determines, in each unit, a vector state amount of the unit. The information processing apparatus 400 clusters the plurality of first characteristic vectors respectively associated to the plurality of consumer ID using the vector state amount determined in each unit as an initial value of a representative vector of each unit, and any of the plurality of units is associated to each consumer ID. COPYRIGHT: (C)2011,JPO&INPIT