Identification of files with similar content

Details Identification of files with similar content Identification of files with similar content

2005-06-20

2010-10-12

Trujillo, James (Department: 2169)

Data processing: database and file management or data structures

Data integrity

Using checksum

C707S747000, C707S749000

Reexamination Certificate

active

07814078

ABSTRACT:
A method, apparatus, and system identity files with similar content. One embodiment is a method that divides files into plural segments. The method computes a hash value and a size for each of the plural segments of the files. In order to identify which files have similar content, the method adds together segments common between files. File similarity information of files with similar content is output.

REFERENCES:
patent: 2005/0091234 (2005-04-01), Hsu et al.
patent: 2005/0216813 (2005-09-01), Cutts et al.
patent: 2006/0253476 (2006-11-01), Roth et al.
Quinlin at al., “Venti: A New Approach to Archival Storage”, Jan. 2002, Proceedings of FAST 2002 Conference on File and Storage Technologies, pp. 1-14.
Udi Manber, “Finding Similar Files in a Large File System”, TR-93-33, Oct. 1993, Department of Computer Science, University of Arizona, pp. 1-10.
Val Henson, Guidelines for Using Compare-by-hash, IBM, Inc., Red Hat, Inc. p. 1-14.

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