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:
Oct. 30, 2001
Filed:
Oct. 30, 1998
Ramesh C. Agarwal, Yorktown Heights, NY (US);
Charu C. Aggarwal, Yorktown Heights, NY (US);
V. V. V. Prasad, Hyderabad, IN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for automatically generating associations of items included in a database. A user first specifies a support criteria indicating a strength of desired associations of items contained in the said database. Then, a recursive program is executed for generating a hierarchical tree structure comprising one or more levels of database itemsets, with each itemset representing item associations determined to have satisfied the specified support criteria. The recursive program includes steps of: characterizing nodes of the tree structure as being either active and enabling generation of new nodes at a new level of the tree, or inactive, at any given time; enabling traversal of the tree structure in a predetermined manner and projecting each of the transactions included in the database onto currently active nodes of the tree structure to generate projected transaction results; and, counting the projected transaction results of the projected transactions at the active nodes to determine whether the further itemsets satisfy the specified support criteria. All itemsets meeting the specified support criteria are added to the tree structure at a new level.