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- W3048596362 abstract "We consider a finite-state Discrete-Time Markov Chain (DTMC) source that can be sampled for detecting the events when the DTMC transits to a new state. Our goal is to study the trade-off between sampling frequency and staleness in detecting the events. We argue that, for the problem at hand, using Age of Information (AoI) for quantifying the staleness of a sample is conservative and therefore, introduce age penalty for this purpose. We study two optimization problems: minimize average age penalty subject to an average sampling frequency constraint, and minimize average sampling frequency subject to an average age penalty constraint; both are Constrained Markov Decision Problems. We solve them using linear programming approach and compute Markov policies that are optimal among all causal policies. Our numerical results demonstrate that the computed Markov policies not only outperform optimal periodic sampling policies, but also achieve sampling frequencies close to or lower than that of an optimal clairvoyant (non-causal) sampling policy, if a small age penalty is allowed." @default.
- W3048596362 created "2020-08-18" @default.
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- W3048596362 date "2020-07-01" @default.
- W3048596362 modified "2023-10-04" @default.
- W3048596362 title "Detecting State Transitions of a Markov Source: Sampling Frequency and Age Trade-off" @default.
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- W3048596362 doi "https://doi.org/10.1109/infocomwkshps50562.2020.9163034" @default.
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