EVALUATION APPARATUS, DISTRIBUTED STORAGE SYSTEM, EVALUATION METHOD, AND COMPUTER READABLE RECORDING MEDIUM HAVING STORED THEREIN EVALUATION PROGRAM

摘要

An evaluation apparatus includes: a calculation unit configured to calculate the evaluation value of the evaluation target content by using an evaluation value estimation algorithm, based on a count value for the evaluation target content and a sum value of respective count values for the plurality of contents; a verification unit configured to verify whether the sum value of the respective count values for the plurality of contents reaches a predetermined value; and a processing unit configured to reduce the respective count values of the plurality of contents, when the sum value of the respective count values for the plurality of contents reaches the predetermined value, and is capable of detecting a sudden data spike at high speed in the evaluation value estimating algorithm.