This article presents the complexity of reachability decision problems for parametric Markov decision processes (pMDPs), an extension to Markov decision processes (MDPs) where transitions probabilities are described by polynomials over a finite set of parameters. In particular, we study the complexity of finding values for these parameters such that the induced MDP satisfies some maximal or minimal reachability probability constraints. We discuss different variants depending on the comparison operator in the constraints and the domain of the parameter values. We improve all known lower bounds for this problem, and notably provide ETR-completeness results for distinct variants of this problem.
@article{arxiv.2009.13128,
title = {The Complexity of Reachability in Parametric Markov Decision Processes},
author = {Sebastian Junges and Joost-Pieter Katoen and Guillermo A. Pérez and Tobias Winkler},
journal= {arXiv preprint arXiv:2009.13128},
year = {2020}
}
Comments
This is a preprint of an article under submission which follows our earlier CONCUR paper. It contains small corrections and new results regarding qualitative reachability queries