no code implementations • 9 May 2024 • Wietze Koops, Sebastian Junges, Nils Jansen
Our experiments demonstrate the efficacy and scalability of the approach.
no code implementations • 8 May 2024 • Eline M. Bovy, Marnix Suilen, Sebastian Junges, Nils Jansen
Partially observable Markov decision processes (POMDPs) rely on the key assumption that probability distributions are precisely known.
no code implementations • 18 Dec 2023 • Maris F. L. Galesloot, Thiago D. Simão, Sebastian Junges, Nils Jansen
However, the challenges of value estimation and belief estimation have only been tackled individually, which prevents existing methods from scaling to settings with many agents.
no code implementations • 19 Jul 2023 • Ameesh Shah, Marcell Vazquez-Chanlatte, Sebastian Junges, Sanjit A. Seshia
Active learning is a well-studied approach to learning formal specifications, such as automata.
no code implementations • 1 May 2023 • Thom Badings, Sebastian Junges, Ahmadreza Marandi, Ufuk Topcu, Nils Jansen
As our main contribution, we present an efficient method to compute these partial derivatives.
3 code implementations • 15 Sep 2022 • Dennis Gross, Nils Jansen, Sebastian Junges, Guillermo A. Perez
This paper presents COOL-MC, a tool that integrates state-of-the-art reinforcement learning (RL) and model checking.
no code implementations • 6 Jun 2022 • Sebastian Junges, Matthijs T. J. Spaan
The key ideas to accelerate analysis of such programs are (1) to treat the behavior of the subroutine as uncertain and only remove this uncertainty by a detailed analysis if needed, and (2) to abstract similar subroutines into a parametric template, and then analyse this template.
no code implementations • 2 Apr 2022 • Steven Carr, Nils Jansen, Sebastian Junges, Ufuk Topcu
Safe exploration is a common problem in reinforcement learning (RL) that aims to prevent agents from making disastrous decisions while exploring their environment.
no code implementations • 1 Dec 2021 • Edward Kim, Jay Shenoy, Sebastian Junges, Daniel Fremont, Alberto Sangiovanni-Vincentelli, Sanjit Seshia
Simulation-based testing of autonomous vehicles (AVs) has become an essential complement to road testing to ensure safety.
1 code implementation • 30 Jun 2021 • Murat Cubuktepe, Nils Jansen, Sebastian Junges, Joost-Pieter Katoen, Ufuk Topcu
The parameter synthesis problem is to compute an instantiation of these unspecified parameters such that the resulting MDP satisfies the temporal logic specification.
no code implementations • 29 Jan 2021 • Roman Andriushchenko, Milan Ceska, Sebastian Junges, Joost-Pieter Katoen
The method builds on a novel inductive oracle that greedily generates counter-examples (CEs) for violating programs and uses them to prune the family.
no code implementations • 24 Sep 2020 • Murat Cubuktepe, Nils Jansen, Sebastian Junges, Ahmadreza Marandi, Marnix Suilen, Ufuk Topcu
(3) We linearize this dual problem and (4) solve the resulting finite linear program to obtain locally optimal solutions to the original problem.
1 code implementation • 30 Jun 2020 • Alexander Bork, Sebastian Junges, Joost-Pieter Katoen, Tim Quatmann
This paper considers the verification problem for partially observable MDPs, in which the policies make their decisions based on (the history of) the observations emitted by the system.
1 code implementation • 30 Jun 2020 • Sebastian Junges, Nils Jansen, Sanjit A. Seshia
Partially-Observable Markov Decision Processes (POMDPs) are a well-known stochastic model for sequential decision making under limited information.
1 code implementation • 28 Apr 2019 • Milan Češka, Christian Hensel, Sebastian Junges, Joost-Pieter Katoen
Probabilistic programs are key to deal with uncertainty in e. g. controller synthesis.
1 code implementation • 15 Feb 2019 • Milan Ceska, Nils Jansen, Sebastian Junges, Joost-Pieter Katoen
This paper considers large families of Markov chains (MCs) that are defined over a set of parameters with finite discrete domains.
no code implementations • 28 Sep 2018 • Mohamadreza Ahmadi, Murat Cubuktepe, Nils Jansen, Sebastian Junges, Joost-Pieter Katoen, Ufuk Topcu
Then, the deception problem is to compute a strategy for the deceiver that minimizes the expected cost of deception against all strategies of the infiltrator.
no code implementations • 16 Jul 2018 • Nils Jansen, Bettina Könighofer, Sebastian Junges, Alexandru C. Serban, Roderick Bloem
This paper targets the efficient construction of a safety shield for decision making in scenarios that incorporate uncertainty.
no code implementations • 5 Mar 2018 • Murat Cubuktepe, Nils Jansen, Sebastian Junges, Joost-Pieter Katoen, Ufuk Topcu
This paper considers parametric Markov decision processes (pMDPs) whose transitions are equipped with affine functions over a finite set of parameters.
no code implementations • 14 Aug 2017 • Leonore Winterer, Sebastian Junges, Ralf Wimmer, Nils Jansen, Ufuk Topcu, Joost-Pieter Katoen, Bernd Becker
We study synthesis problems with constraints in partially observable Markov decision processes (POMDPs), where the objective is to compute a strategy for an agent that is guaranteed to satisfy certain safety and performance specifications.
1 code implementation • 28 Oct 2016 • Sebastian Junges, Nils Jansen, Joost-Pieter Katoen, Ufuk Topcu
Probabilistic model checking is used to predict the human's behavior.