Abstract: A method includes retrieving a signal that measures an activity of a cardiac system. A heart beat model is created based on the retrieved signal, and heart beats are detected using the heart beat model. The model can be trained using a machine learning technique and also respiratory cycle phase information can be used in training the model. A related algorithm, apparatus and computer program are also included.

Abstract: A method and system of physiological monitoring, includes measuring a quantity relating to a first subject with a first sensor positioned in or in proximity of the first subject and configured to provide a first signal, measuring a quantity relating to a second subject with a second sensor positioned in or in proximity of the second subject and configured to provide a second signal, and analyzing the first and the second signal and the interrelation of the first and second signal in order to determine at least one event relating to the first and/or the second subject.