Systems and methods to compress MQDF data are disclosed herein. A plurality of eigenvectors is identified. Each eigenvector in the plurality of eigenvectors can correspond to a pattern to be recognized. Each eigenvector in the plurality of eigenvectors can be split into sub-vectors. The sub-vectors can...http://www.google.de/patents/US8077994?utm_source=gb-gplus-sharePatent US8077994 - Compression of MQDF classifier using flexible sub-vector grouping