08418055 is referenced by 19 patents and cites 1110 patents.

A system and method for identifying a document based on a spectral analysis of the text of the document is described. In some examples, the system generates a document identifier for a rendered document based on assigning values to words in the rendered document, such as values associated with the frequency of use of the word by the rendered document, the absolute or relative position of the word in the rendered document, and so on. The system may use the document identifier to generate a group of documents having similar document identifiers, and choose a likely match from the group of documents based on predictive analysis.

Title
Identifying a document by performing spectral analysis on the contents of the document
Application Number
12/660154
Publication Number
8418055 (B2)
Application Date
February 18, 2010
Publication Date
April 9, 2013
Inventor
Michael J Smith
Seattle
WA, US
Mark Sanvitale
Seattle
WA, US
Jesse Peterson
Seattle
WA, US
Claes Fredrik Mannby
Issaquah
WA, US
Redwood Stephens
Seattle
WA, US
Martin T King
Vashon Island
WA, US
Agent
McDonnell Boehnen Hulbert & Berghoff
Assignee
Google
CA, US
IPC
G06F 17/27
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