The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2013
Filed:
Sep. 15, 2009
Graham Cormode, Morristown, NJ (US);
Vladislav Shkapenyuk, Brooklyn, NY (US);
Divesh Srivastava, Summit, NJ (US);
Bojian Xu, Ames, IA (US);
Graham Cormode, Morristown, NJ (US);
Vladislav Shkapenyuk, Brooklyn, NY (US);
Divesh Srivastava, Summit, NJ (US);
Bojian Xu, Ames, IA (US);
AT&T Intellectual Property I, L.P., Atlanta, GA (US);
Abstract
A disclosed method for implementing time decay in the analysis of streaming data objects is based on the age, referred to herein as the forward age, of a data object measured from a landmark time in the past to a time associated with the occurrence of the data object, e.g., an object's timestamp. A forward time decay function is parameterized on the forward age. Because a data object's forward age does not depend on the current time, a value of the forward time decay function is determined just once for each data object. A scaling factor or weight associated with a data object may be weighted according to its decay function value. Forward time decay functions are beneficial in determining decayed aggregates, including decayed counts, sums, and averages, decayed minimums and maximums, and for drawing decay-influenced samples.