Patent ID: 8073963
Filing Date: 2011-12-06
Classification: G06K

Abstract:
1. A data stream change detector comprising one or more processors to detect changes in a data stream including: a) a receiving module configured to accept a new data vector; b) a preprocessing module configured to preprocess the new data vector using a filter; c) a clustering module configured to cluster the new data vector with previously received data vectors, the new data vector and the previously received data vectors being clustered including unlabeled data; d) a strangeness module configured to compute a strangeness value for each of the previously received data vectors; e) a p-value module configured to calculate a p-value for the new data vector using the strangeness value; f) a martingale value determination module configured to calculate a martingale value for the new data vector using the p-value; g) a comparison module configured to: h) an output module configured to output the indicator.