Comparison engine for identifying documents describing similar subject matter

US7904462B1 · kind B1 · utility

Assignee

• AMAZON TECHNOLOGIES, INC. · US

Inventors

• Srikanth Thirumalai · Needham, US
• Aswath Manoharan · Sunnyvale, US
• Mark J. Tomko · Seattle, US
• Grant M. Emery · Seattle, US
• Vijai Mohan · Seattle, US
• Egidio Loch Terra · San Mateo, US

Key dates

• Filing date: Dec 10, 2007
• Grant date: Mar 8, 2011
• Expiry date: May 24, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G06Q30/06
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

Systems and methods for determining whether a first document is a potential duplicate of a second document such that the two documents describe the same or substantially the same subject matter, wherein the first and second documents include attribute data in attribute fields. A set of rules is obtained for determining whether the first document is a potential duplicate of the second document. Moreover, for each rule in the set of rules, a determination is made as to whether data in a first set of attributes of the first document is contained in a second set of attributes of the second document. According to the results of the evaluated rules in the rules set, determining whether the first document is a potential duplicate of the second document. If, according to the evaluated rules in the rules set, the first document is determined to be a potential duplicate of the second document, storing a reference to the first document in a set of potential duplicates of the second document.