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Gradient-Descent for Randomized Controllers Under Partial Observability

  • Linus Heck
  • , Jip Spel
  • , Sebastian Junges
  • , Joshua Moerman
  • , Joost-Pieter Katoen

    Research output: Chapter in Book/Report/Conference proceedingConference Article in proceedingAcademicpeer-review

    Abstract

    Randomization is a powerful technique to create robust controllers, in particular in partially observable settings. The degrees of randomization have a significant impact on the system performance, yet they are intricate to get right. The use of synthesis algorithms for parametric Markov chains (pMCs) is a promising direction to support the design process of such controllers. This paper shows how to define and evaluate gradients of pMCs. Furthermore, it investigates varieties of gradient descent techniques from the machine learning community to synthesize the probabilities in a pMC. The resulting method scales to significantly larger pMCs than before and empirically outperforms the state-of-the-art, often by at least one order of magnitude.
    Original languageEnglish
    Title of host publicationVerification, model Checking, and Abstract Interpretation
    Subtitle of host publication23rd International Conference, VMCAI 2022 Philadelphia, PA, USA, January 16–18, 2022 Proceedings
    EditorsBernd Finkbeiner, Thomas Wies
    PublisherSpringer
    Pages127-150
    Number of pages24
    Edition1
    ISBN (Electronic)9783030945831
    ISBN (Print)9783030945824
    DOIs
    Publication statusPublished - 2022
    EventThe 23rd international conference Verification, Model Checking, and Abstract Interpretation - Philadelphia, United States
    Duration: 16 Jan 202218 Jan 2022
    Conference number: 23
    https://popl22.sigplan.org/home/VMCAI-2022
    https://link.springer.com/book/10.1007/978-3-030-94583-1

    Publication series

    SeriesLecture Notes in Computer Science
    Volume13182
    ISSN0302-9743
    SeriesTheoretical Computer Science and General Issues (LNCS subseries)
    Volume13182

    Conference

    ConferenceThe 23rd international conference Verification, Model Checking, and Abstract Interpretation
    Abbreviated titleVMCAI 2022
    Country/TerritoryUnited States
    CityPhiladelphia
    Period16/01/2218/01/22
    Internet address

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