METHOD AND DEVICE FOR UPDATING RECORD OF DATA BASE SYSTEM BASED ON MODEL IN WHICH TIME-DEPENDENT BEHAVIOR IS IMPROVED

摘要

PROBLEM TO BE SOLVED: To provide improved technology to update customer's signature or other types of records in a data base system.;SOLUTION: The customer's signature or other types of records are updated by using event driving type estimation quantity based on a model of a time- dependent behavior in the data base system. In a preferable form of embodiment, the latest version of a record to be affected by prescribed transaction is retrieved from a memory of the system, the event driving type estimation quantity of at least one of transaction rate and period probability to the record are determined at least partially based on a dynamic Poisson timing model having the transaction rate on the basis of period corresponding to many related periods. The event driving type estimation quantity is allowed to be constituted so as to generate an estimated transaction rate λjin for a period j and a prescribed transaction n and after that to generate an estimated period probability λjm/Σkλkm for the period j setting πj,n. And an updated version of the record is allowed to be generated based on the event driving type estimation quantity.;COPYRIGHT: (C)2001,JPO