This from Personal and Ubiquitous Computing. Stigmergy is finding ever more practical application.
In this paper, we present an automatic tool for monitoring sleep behavior that uses a commercially available smartwatch, in order to sample heart rate and wrist inertial data, and a novel detection technique based on stigmergic receptive fields (SRFs). The SRF transforms an input time series into a stigmergic trail and provides a (dis-)similarity measure against another signal trail.
manwithoutqualities 