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Crowdsensus: deriving consensus information from statements made by a crowd of users

  • US 8,781,990 B1
  • Filed: 02/25/2011
  • Issued: 07/15/2014
  • Est. Priority Date: 02/25/2010
  • Status: Active Grant
First Claim
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1. A computer-implemented method for determining a consensus value for an attribute of a map feature, the method executed by a computer system, comprising:

  • receiving a plurality of proposed values for the attribute of the map feature, each proposed value provided by a user;

    iteratively determining for each user proposing a value in the plurality of proposed values a first score indicative of an accuracy of the user until the difference between the determined first scores determined in two successive iterations is below a pre-defined threshold;

    iteratively determining for each proposed value in the plurality of proposed values a second score indicative of a probability that the proposed value is a correct value for the attribute until the difference between the determined second scores determined in two successive iterations is below a pre-defined threshold and wherein the second score is based at least in part on the first score for each user proposing the proposed value;

    determining from the plurality of proposed values a consensus value for the attribute, by;

    determining a probability distribution of the proposed values based at least in part on the second score; and

    determining the consensus value for the attribute based at least in part on the probability distribution; and

    storing the consensus value of the attribute.

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