AN AUTOMATED ADAPTIVE METHOD FOR IDENTITY VERIFICATION WITH PERFORMANCE GUARANTEES

摘要

This invention provides an automated adaptive method for identity verific ation of' claimants that attempt to get access into a resource by responding to a sequence of identifiers. The sequence has a specified maximal length a nd the identifiers are partitioned into multiple groups where identifiers in the same group are correlated and identifiers in different groups are not c orrelated. The method guarantees that an impostor will be accepted with a pr obability that does not exceed a specified parameter and that a legitimate c laimant will be rejected with a probability that does not exceed a different specified parameter. The method also computes the probabilities that a legi timate claimant, or an impostor, will terminate an interrogation session wit h an inconclusive result, which would necessitate further manual interrogati on. The method is adaptive as the conditional probabilities of an impostor's responses change throughout a session of interrogation.