| 摘要 |
<P>PROBLEM TO BE SOLVED: To automatically detect an abnormal value in daily tally data. <P>SOLUTION: A server reads daily values of a check target item for a specific time period from a storage part storing values of price items or quantity items derived from daily commodity selling/buying transactions, calculates an average of the read values, and then calculates a standard deviation of the average. The server obtains a value calculated by adding the standard deviation to the average as an upper limit threshold of the check target item, and determines whether a value of the check target item among the values of price items or quantity items acquired from the outside exceeds the upper limit threshold. <P>COPYRIGHT: (C)2013,JPO&INPIT |
