Cyber-physical computing envisions a next generation of large distributed systems that are open, highly interconnected, and deeply embedded in the physical world. Such systems have become a research priority in networking and information technology, as recommended by PCAST, the nation's Presidential Council of Advisors on Science and Technology. Research challenges in cyber-physical computing arise from the multiple modalities of system interactions with the physical world, including temporal, functional, and data interactions, as well as from increased system scale. New composition challenges arise as systems grow in size and complexity, making it particularly hard to reason about their overall behavior. This talk discusses the top emerging challenges in cyber-physical systems, with emphasis on those that arise by virtue of scale. Recent research directions and initial solutions are presented to address problems of increasing interest in this realm.
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