| US 7,613,787 B2 | ||
| Efficient algorithm for finding candidate objects for remote differential compression | ||
| Mark S. Manasse, San Francisco, Calif. (US); Dan Teodosiu, Bellevue, Wash. (US); and Akhil Wable, Pittsburgh, Pa. (US) | ||
| Assigned to Microsoft Corporation, Redmond, Wash. (US) | ||
| Filed on Sep. 24, 2004, as Appl. No. 10/948,980. | ||
| Prior Publication US 2006/0085561 A1, Apr. 20, 2006 | ||
| Int. Cl. G06F 15/16 (2006.01) | ||
| U.S. Cl. 709—217 [709/247; 709/238] | 17 Claims |
| 1. A method for identifying objects for use in remote differential compression, the method comprising:
calculating traits for an object, wherein the calculating traits comprises:
partitioning the object into chunks;
computing signatures for each of the object chunks;
grouping the signatures into shingles;
computing at least one shingle signature for each of the shingles;
mapping the shingle signatures into image sets;
calculating pre-traits from the image sets; and
computing the traits using the pre-traits, wherein the traits are smaller in size as compared to the pre-traits;
using the traits to identify candidate-objects that are similar to the object; and
selecting final objects from the identified candidate objects.
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