US Patent 10102259 Track reconciliation from multiple data sources

Embodiments relate to reconciling different entity identifiers. A method of reconciling different entity identifiers of a same entity is provided. The method receives a plurality of series of location-time data items from a plurality of tracking systems that each track one or more entities. Each series of location-time data items is associated with an entity identifier. The method categorizes each location-data item into a space-time region. The method generates a track for each of the plurality of series of location-time data items based on the space-time regions into which the location-data items are categorized, and generates a track signature for each of the generated tracks based on a segment of the generated track. The method compares the track signatures to find matching track signatures. Based on a plurality of matching signatures, the method reconciles the plurality of entity identifiers associated with the plurality of matching signatures to a particular entity.