Method and apparatus for updating records in a database system based on an improved model of time-dependent behavior
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United States of America Patent
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Apr 15, 2003
Grant Date -
Feb 6, 2003
app pub date -
Dec 8, 2000
filing date -
Apr 3, 2000
priority date (Note) -
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Abstract
A customer signature or other type of record in a database system is updated using an event-driven estimator based on a model of time-dependent behavior. In a preferred embodiment, a current version of a record affected by a given transaction is retrieved from a memory of the system and an event-driven estimator of at least one of a transaction rate and a period probability for the record is determined based at least in part on a dynamic Poisson timing model having a number of periods and corresponding period-based transaction rates associated therewith. The event-driven estimator may be configured so as to generate an estimated transaction rate .lambda..sub.j,n for period j and a given transaction n, and then to generate an estimated period probability .pi..sub.j,n for period j as .lambda..sub.j,n /.SIGMA..sub.k.lambda..sub.k,n. An updated version of the record may then be generated based on the event-driven estimator.
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