Evaluation device, evaluation method and recording medium

An evaluation method executed by a computer, the method comprising:

• a first evaluation step, for each record used for transmission control of data circulating in a network, evaluating extent of variation of an amount of the data, based on a history of the amounts of the data matching a condition of the record;
• a second evaluation step, for each of the records, evaluating a size of a space represented by the record, based on the condition of the record;
• and
• a calculation step, for each of the records, calculating an index value representing a possibility that a predetermined or a greater amount of the data matches the condition of the record within a fixed period of time, based on an evaluation result by the first evaluation step, and an evaluation result by the second evaluation step.

A computer-readable recording medium having a program stored therein for causing a computer to execute a method, the method comprising:

• a first evaluation step, for each record used for transmission control of data circulating in a network, evaluating extent of variation of an amount of the data, based on a history of the amounts of the data matching a condition of the record;
• a second evaluation step, for each of the records, evaluating a size of a space represented by the record, based on the condition of the record;
• and
• a calculation step, for each of the records, calculating an index value representing a possibility that a predetermined or a greater amount of the data matches the condition of the record within a fixed period of time, based on an evaluation result by the first evaluation step, and an evaluation result by the second evaluation step.