Patent · US Active

Searching documents using a dynamically defined ignore string

US8793271B2 · kind B2 · utility

0Cited by

3References

21Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Sreeram Viswanath Balakrishnan · New Delhi, IN
Michael Busch · Mountain View, US
Christopher J. Hinrichs · San Jose, US
Tom William Jacopi · San Jose, US
Andreas Neumann · Hamburg, DE

Key dates

Filing date	Mar 27, 2009
Grant date	Jul 29, 2014
Priority date	—
Expiry date	Apr 12, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/24
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Techniques are disclosed for searching a plurality of documents using a dynamically defined ignore string. The ignore string may be specified by a user. An overlay index may be generated over the plurality of documents. The overlay index may include a posting list for each term in the ignore string. Each posting list may specify the documents of the plurality of documents in which the respective term occurs outside of the ignore string. The overlay index may also include a posting list that specifies all occurrences of the ignore string in the plurality of documents. Once generated, a user may search the plurality of documents while occurrences of the ignore string in the plurality of documents are ignored in text-based searches.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.