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:
Mar. 26, 2013
Filed:
Dec. 16, 2010
Thomas E Jackson, Redmond, WA (US);
Stuart Bowers, Redmond, WA (US);
Chris Karkanias, Sammamish, WA (US);
Allen Brown, Sammamish, WA (US);
David Campbell, Sammamish, WA (US);
Brian Aust, Redmond, WA (US);
Thomas E Jackson, Redmond, WA (US);
Stuart Bowers, Redmond, WA (US);
Chris Karkanias, Sammamish, WA (US);
Allen Brown, Sammamish, WA (US);
David Campbell, Sammamish, WA (US);
Brian Aust, Redmond, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Described are techniques to facilitate temporal features in a semantic data store. Information about lifetimes of facts in a semantic store is maintained. Even when a fact is logically deleted, a physical record is kept available. The record of a logically deleted or invalid fact has associated lifetime information. For example, valid-from and valid-to time values. The record of a fact not yet deleted may have a valid-from time value indicating when it was created, became valid, etc. Queries against the semantic store may specify a timeslice (a point in time or a time range). The lifetime information can be used to satisfy such time-specific queries. Because records are maintained after they are logically deleted, it is also possible to accurately query a past state of the semantic store. Even if such a query is run at different times, same results may be obtained.