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. 10, 2010
Filed:
Nov. 06, 2006
Applicants:
Andrew V. Goldberg, Redwood City, CA (US);
Renato F. Werneck, Princeton, NJ (US);
Haim Kaplan, Hod Hasharon, IL;
Inventors:
Andrew V. Goldberg, Redwood City, CA (US);
Renato F. Werneck, Princeton, NJ (US);
Haim Kaplan, Hod Hasharon, IL;
Assignee:
Microsoft Corporation, Redmond, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
An algorithm referred to as REAL for the point-to-point shortest path problem combines A* search with landmark-based lower bounds and reach-based pruning. A symbiosis of these techniques is described, which gives a range of time and space tradeoffs, including those that improve both of these complexity measures. Locality is improved and exact reach computation is described.