We present a novel semi-supervised learning algorithm, based upon the EM algorithm for maximum likelihood estimation, which can be used to learn probabilistic models from subjectively labelled data. We demonstrate the method on the task of automated ECG segmentation, with a particular emphasis on the accurate measurement of the QT interval. In addition we discuss the use of wavelet methods for the representation of the ECG, and advanced duration modelling techniques for hidden Markov models applied to ECG segmentation.

Original publication

DOI

10.1109/iembs.2004.1403187

Type

Journal article

Journal

Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference

Publication Date

01/2004

Volume

1

Pages

434 - 437

Addresses

Dept. of Eng. Sci., Oxford Univ., UK. nph@robots.ox.ac.uk