Google's new step algorithm is designed for "challenging situations" where a watch normally can't track movement. Here's how it does in real life.

A cycle counting algorithm that will reduce a complex history into a series of discrete cycles is presented. The cycles determined by this technique are defined as closed stress-strain hysteresis ...

An algorithm is presented for filling in least squares estimates of m missing values in any analysis of variance design. The method is non-iterative and requires only those subroutines already in use ...