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. 13, 2007
Filed:
Jun. 20, 2003
Surajit Chaudhuri, Redmond, WA (US);
Kris Ganjam, Seattle, WA (US);
Venkatesh Ganti, Redmond, WA (US);
Rajeev Motwani, Palo Alto, CA (US);
Surajit Chaudhuri, Redmond, WA (US);
Kris Ganjam, Seattle, WA (US);
Venkatesh Ganti, Redmond, WA (US);
Rajeev Motwani, Palo Alto, CA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
To help ensure high data quality, data warehouses validate and clean, if needed incoming data tuples from external sources. In many situations, input tuples or portions of input tuples must match acceptable tuples in a reference table. For example, product name and description fields in a sales record from a distributor must match the pre-recorded name and description fields in a product reference relation. A disclosed system implements an efficient and accurate approximate or fuzzy match operation that can effectively clean an incoming tuple if it fails to match exactly with any of the multiple tuples in the reference relation. A disclosed similarity function that utilizes token substrings referred to as q-grams overcomes limitations of prior art similarity functions while efficiently performing a fuzzy match process.