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:
Aug. 18, 2009
Filed:
Dec. 07, 2005
Applicants:
Surajit Chaudhuri, Redmond, WA (US);
Vivek R. Narasayya, Redmond, WA (US);
Rajeev Motwani, Palo Alto, CA (US);
Mayur D. Datar, Stanford, CA (US);
Inventors:
Surajit Chaudhuri, Redmond, WA (US);
Vivek R. Narasayya, Redmond, WA (US);
Rajeev Motwani, Palo Alto, CA (US);
Mayur D. Datar, Stanford, CA (US);
Assignee:
Microsoft Corporation, Redmond, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
An outlier index for a database and a given workload is generated by identifying sub-relations of tuples in the database induced by selection and group by conditions in queries in the workload. A variance is then generated for values in each sub-relation. Sub-relations having higher variances are selected, and outliers from such sub-relations having higher variances are generated.