Patent ID: 8149094

Claim:
A method for predicting a subset C from a set SC, comprising all multi-RFID-tag-readers in a multi-RFID-tag-reader network, wherein the subset C detects an event E with an increased accuracy in comparison to the set SC, the method comprising: partitioning the RFID-tag-readers in the set SC for collision avoidance; receiving threshold parameters including an index start; sorting the set SC in descending order based on the correlation of each RFID-tag-reader in the set SC with the event E, where the index start is set to one of the multi-RFID-tag-readers of the set SC with a highest correlation with event E; initializing the set C to contain the one RFID-tag-reader of the set SC with the index start; identifying candidate RFID-tag-readers in SC that meet a criterion defined by the threshold parameters, repeatedly relaxing the threshold parameters, adding an identified candidate RFID-tag-reader to the subset C; and removing the identified candidate RFID-tag-reader from the set SC until a cost computed for subset C exceeds a threshold cost.