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. 28, 2014
Filed:
Aug. 28, 2009
Applicant:
Christopher A. Stein, Palo Alto, CA (US);
Inventor:
Christopher A. Stein, Palo Alto, CA (US);
Assignee:
Facebook, Inc., Menlo Park, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 15/16 (2006.01); H04L 12/58 (2006.01); G06F 17/30 (2006.01); G06Q 10/10 (2012.01);
U.S. Cl.
CPC ...
G06F 17/30675 (2013.01); H04L 51/12 (2013.01); H04L 12/585 (2013.01); G06Q 10/107 (2013.01);
Abstract
A mechanism for efficiently determining similarity between documents. A set of reference data items is generated by processing a reference document. A similarity index representing similarity between a candidate document and the reference documents is obtained by counting segments of the candidate document matching the reference data items. The candidate document is a message transmitted in a communication system where the message is compared against one or more reference documents representing unwanted messages to filter and block unwanted messages from being transmittal or propagated.