×

LEARNING A USER'S ACTIVITY PREFERENCES FROM GPS TRACES AND KNOWN NEARBY VENUES

  • US 20090073033A1
  • Filed: 09/18/2007
  • Published: 03/19/2009
  • Est. Priority Date: 09/18/2007
  • Status: Active Grant
First Claim
Patent Images

1. A method for inferring activities associated with a user, the method comprising:

  • receiving at least one location trace and corresponding contextual information;

    deriving a set of venues based on the location trace based on a venue database, wherein a respective hypothetical visit is associated with the contextual information corresponding to the location trace;

    deriving a set of activity types associated with a context based on the venues, the corresponding context indicated by the location trace, and a venue-to-activity mapping;

    receiving a user query context;

    identifying a number of activity types of which the associated contextual information is similar to the user query context;

    weighting a respective identified activity type based on its associated context'"'"'s similarity to the user query context;

    normalizing weights associated with each identified activity type; and

    producing an activity-type probability distribution, thereby facilitating inferring activities associated with the user.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×