Patent Document ID: 8560468
Application ID: 13025117

Base Claim:
1. A method performed by data processing apparatus, the method comprising: receiving a collection of facts, each fact represented as an entity-attribute-value tuple; identifying expected values for one or more individual attributes, where the identifying expected values includes, for each particular attribute: identifying facts having the attribute, calculating a value score for facts of the collection of facts having the particular attribute for each particular value, calculating a global score for all facts of the collection having the attribute, and comparing the value score to the global score such that a value is identified as an expected value if the comparison satisfies a specified threshold.

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Claim 3:
3. The method of claim 1 , where calculating the global score includes: identifying a source and confidence for each fact having the particular attribute; and calculating a score as a function of a sum of confidences for each source and a sum of all confidences.