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:
May. 15, 2018
Filed:
Sep. 11, 2013
International Business Machines Corporation, Armonk, NY (US);
Kenneth L. Clarkson, Madison, NJ (US);
David P. Woodruff, Mountain View, CA (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A system for retrieving stored data includes memory and a processor. The memory stores a first matrix, A, having dimensions n×d, a first sparse matrix, R, and a second sparse matrix, S. The processor receives an input value, k, corresponding to a selected rank to generate a second matrix, AR, by multiplying the first matrix, A, by the first sparse matrix, R. The second matrix, AT, has dimensions n×t. The processor generates a third matrix, SA, by multiplying the second sparse matrix, S, by the first matrix, A. The third matrix, SA, has dimensions t'×n, and the processor generates a fourth matrix, (SAR), by calculating a Moore-Penrose pseudo-inverse of a matrix, (SAR), and approximating the first matrix, A by generating a fifth matrix, Ã, the fifth matrix defined as AR×(SAR)×SA.