Invariant (LTI) systems. The sequence of LTI systems generating the action is modeled as a
Markov chain, where a Hidden Markov Model (HMM) is used to model the transition from
one atomic LTI system to another. In turn, the LTI systems are represented in terms of their
Hankel matrices. For classification purposes, the parameters of a set of HMMs (one for each
action class) are learned via a discriminative approach. This work proposes a novel method …