The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2014
Filed:
Jul. 25, 2012
Chad Walters, San Francisco, CA (US);
Lukas Biewald, San Francisco, CA (US);
Nitay Joffe, Palo Alto, CA (US);
Andrew Alan James, San Francisco, CA (US);
Chad Walters, San Francisco, CA (US);
Lukas Biewald, San Francisco, CA (US);
Nitay Joffe, Palo Alto, CA (US);
Andrew Alan James, San Francisco, CA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Tools and techniques are described herein for checkpointing iterators during search. These tools may provide methods that include instantiating iterators in response to a search request. The iterators include fixed state information that remains constant over a life of the iterator, and further include dynamic state information that is updated over the life of the iterator. The iterators traverse through postings lists in connection with performing the search request. As the iterators traverse the posting lists, the iterators may update their dynamic state information. The iterators may then evaluate whether to create checkpoints, with the checkpoints including representations of the dynamic state information.