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:
Apr. 14, 2015
Filed:
Aug. 26, 2008
Wei Fan, New York, NY (US);
Chang-shing Perng, Bedford Hills, NY (US);
Haixun Wang, Tarrytown, NY (US);
Philip Shi-lung Yu, Chappaqua, NY (US);
Wei Fan, New York, NY (US);
Chang-Shing Perng, Bedford Hills, NY (US);
Haixun Wang, Tarrytown, NY (US);
Philip Shi-Lung Yu, Chappaqua, NY (US);
SAP AG, Walldorf, DE;
Abstract
The present invention provides an index structure for managing weighted-sequences in large databases. A weighted-sequence is defined as a two-dimensional structure in which each element in the sequence is associated with a weight. A series of network events, for instance, is a weighted-sequence because each event is associated with a timestamp. Querying a large sequence database by events' occurrence patterns is a first step towards understanding the temporal causal relationships among the events. The index structure proposed herein enables the efficient retrieval from the database of all subsequences (contiguous and non-contiguous) that match a given query sequence both by events and by weights. The index structure also takes into consideration the nonuniform frequency distribution of events in the sequence data.