| 摘要 |
PROBLEM TO BE SOLVED: To calculate a ranking in the overall ranking while keeping individual data confidential.SOLUTION: A program obtains, with respect to one or more pieces of processing target data, for each data within a predetermined range, confidential data in which the number of pieces of processing target data larger than the data is confidential via a network from apparatuses of a plurality of organizations, stores the obtained confidential data for each data in a storage unit in each organization, and makes a computer execute processing of performing addition operation of the confidential data of each organization for each data within the predetermined range stored in the storage unit. |
