3 Search Results for "Weiss, Philipp"

Document
DOI: 10.4230/OASIcs.ASD.2020.3
Adaptable Demonstrator Platform for the Simulation of Distributed Agent-Based Automotive Systems

Authors: Philipp Weiss, Sebastian Nagel, Andreas Weichslgartner, and Sebastian Steinhorst

Published in: OASIcs, Volume 79, 2nd International Workshop on Autonomous Systems Design (ASD 2020)

Abstract
Future autonomous vehicles will no longer have a driver as a fallback solution in case of critical failure scenarios. However, it is costly to add hardware redundancy to achieve a fail-operational behaviour. Here, graceful degradation can be used by repurposing the allocated resources of non-critical applications for safety-critical applications. The degradation problem can be solved as a part of an application mapping problem. As future automotive software will be highly customizable to meet customers' demands, the mapping problem has to be solved for each individual configuration and the architecture has to be adaptable to frequent software changes. Thus, the mapping problem has to be solved at run-time as part of the software platform. In this paper we present an adaptable demonstrator platform consisting of a distributed simulation environment to evaluate such approaches. The platform can be easily configured to evaluate different hardware architectures. We discuss the advantages and limitations of this platform and present an exemplary demonstrator configuration running an agent-based graceful degradation approach.
Cite as

Philipp Weiss, Sebastian Nagel, Andreas Weichslgartner, and Sebastian Steinhorst. Adaptable Demonstrator Platform for the Simulation of Distributed Agent-Based Automotive Systems. In 2nd International Workshop on Autonomous Systems Design (ASD 2020). Open Access Series in Informatics (OASIcs), Volume 79, pp. 3:1-3:6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{weiss_et_al:OASIcs.ASD.2020.3,
  author =	{Weiss, Philipp and Nagel, Sebastian and Weichslgartner, Andreas and Steinhorst, Sebastian},
  title =	{{Adaptable Demonstrator Platform for the Simulation of Distributed Agent-Based Automotive Systems}},
  booktitle =	{2nd International Workshop on Autonomous Systems Design (ASD 2020)},
  pages =	{3:1--3:6},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-141-2},
  ISSN =	{2190-6807},
  year =	{2020},
  volume =	{79},
  editor =	{Steinhorst, Sebastian and Deshmukh, Jyotirmoy V.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.ASD.2020.3},
  URN =		{urn:nbn:de:0030-drops-125974},
  doi =		{10.4230/OASIcs.ASD.2020.3},
  annote =	{Keywords: fail-operational, graceful degradation, agent-based mapping}
}
Document
Track A: Algorithms, Complexity and Games
DOI: 10.4230/LIPIcs.ICALP.2020.102
Hardness of Equations over Finite Solvable Groups Under the Exponential Time Hypothesis

Authors: Armin Weiß

Published in: LIPIcs, Volume 168, 47th International Colloquium on Automata, Languages, and Programming (ICALP 2020)

Abstract
Goldmann and Russell (2002) initiated the study of the complexity of the equation satisfiability problem in finite groups by showing that it is in 𝖯 for nilpotent groups while it is 𝖭𝖯-complete for non-solvable groups. Since then, several results have appeared showing that the problem can be solved in polynomial time in certain solvable groups of Fitting length two. In this work, we present the first lower bounds for the equation satisfiability problem in finite solvable groups: under the assumption of the exponential time hypothesis, we show that it cannot be in 𝖯 for any group of Fitting length at least four and for certain groups of Fitting length three. Moreover, the same hardness result applies to the equation identity problem.
Cite as

Armin Weiß. Hardness of Equations over Finite Solvable Groups Under the Exponential Time Hypothesis. In 47th International Colloquium on Automata, Languages, and Programming (ICALP 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 168, pp. 102:1-102:19, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{wei:LIPIcs.ICALP.2020.102,
  author =	{Wei{\ss}, Armin},
  title =	{{Hardness of Equations over Finite Solvable Groups Under the Exponential Time Hypothesis}},
  booktitle =	{47th International Colloquium on Automata, Languages, and Programming (ICALP 2020)},
  pages =	{102:1--102:19},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-138-2},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{168},
  editor =	{Czumaj, Artur and Dawar, Anuj and Merelli, Emanuela},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.ICALP.2020.102},
  URN =		{urn:nbn:de:0030-drops-125093},
  doi =		{10.4230/LIPIcs.ICALP.2020.102},
  annote =	{Keywords: equations in groups, solvable groups, exponential time hypothesis}
}
Document
DOI: 10.4230/LIPIcs.STACS.2020.6
An Automaton Group with PSPACE-Complete Word Problem

Authors: Jan Philipp Wächter and Armin Weiß

Published in: LIPIcs, Volume 154, 37th International Symposium on Theoretical Aspects of Computer Science (STACS 2020)

Abstract
We construct an automaton group with a PSPACE-complete word problem, proving a conjecture due to Steinberg. Additionally, the constructed group has a provably more difficult, namely EXPSPACE-complete, compressed word problem. Our construction directly simulates the computation of a Turing machine in an automaton group and, therefore, seems to be quite versatile. It combines two ideas: the first one is a construction used by D'Angeli, Rodaro and the first author to obtain an inverse automaton semigroup with a PSPACE-complete word problem and the second one is to utilize a construction used by Barrington to simulate circuits of bounded degree and logarithmic depth in the group of even permutations over five elements.
Cite as

Jan Philipp Wächter and Armin Weiß. An Automaton Group with PSPACE-Complete Word Problem. In 37th International Symposium on Theoretical Aspects of Computer Science (STACS 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 154, pp. 6:1-6:17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{wachter_et_al:LIPIcs.STACS.2020.6,
  author =	{W\"{a}chter, Jan Philipp and Wei{\ss}, Armin},
  title =	{{An Automaton Group with PSPACE-Complete Word Problem}},
  booktitle =	{37th International Symposium on Theoretical Aspects of Computer Science (STACS 2020)},
  pages =	{6:1--6:17},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-140-5},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{154},
  editor =	{Paul, Christophe and Bl\"{a}ser, Markus},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.STACS.2020.6},
  URN =		{urn:nbn:de:0030-drops-118674},
  doi =		{10.4230/LIPIcs.STACS.2020.6},
  annote =	{Keywords: automaton group, word problem, PSPACE, compressed word problem}
}
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