Abstract: An anonymization processing device is provided that anonymizes input data and outputs anonymized output data. The device receives the input data, anonymizes the input data, to generate anonymized data corresponding to the input data, and stores the anonymized data in a first memory. When a plurality of anonymized data items stored in the memory satisfy an anonymity index, the device generates and output a plurality of output data items corresponding to the anonymized data items, respectively, and deletes the anonymized data items from the first memory. The device further generates a plurality of the anonymization patterns based on the anonymized data items, stores the anonymization patterns in a second memory, and when the information items included in the anonymized data stored in the first memory is equivalent to each of the information items included in the anonymization pattern, respectively, the device outputs the output data from the anonymized data.

Abstract: An anonymization processing device that anonymizes input data and outputs anonymized output data, includes an input unit configured to receive the input data; a processing unit configured to anonymize the input data, to generate anonymized data corresponding to the input data that has been anonymized; a first storage unit configured to store the anonymized data; and an output unit configured, in a case where a plurality of anonymized data items stored in the first storage unit satisfy an anonymity index, to generate and output a plurality of output data items corresponding to the anonymized data items, respectively, and to delete the anonymized data items from the first storage unit.