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Documents authored by Harel, David

Document
DOI: 10.4230/LIPIcs.CONCUR.2015.85
On the Succinctness of Idioms for Concurrent Programming

Authors: David Harel, Guy Katz, Robby Lampert, Assaf Marron, and Gera Weiss

Published in: LIPIcs, Volume 42, 26th International Conference on Concurrency Theory (CONCUR 2015)

Abstract
The ability to create succinct programs is a central criterion for comparing programming and specification methods. Specifically, approaches to concurrent programming can often be thought of as idioms for the composition of automata, and as such they can then be compared using the standard and natural measure for the complexity of automata, descriptive succinctness. This measure captures the size of the automata that the evaluated approach needs for expressing the languages under discussion. The significance of this metric lies, among other things, in its impact on software reliability, maintainability, reusability and simplicity, and on software analysis and verification. Here, we focus on the succinctness afforded by three basic concurrent programming idioms: requesting events, blocking events and waiting for events. We show that a programming model containing all three idioms is exponentially more succinct than non-parallel automata, and that its succinctness is additive to that of classical nondeterministic and "and" automata. We also show that our model is strictly contained in the model of cooperating automata à la statecharts, but that it may provide similar exponential succinctness over non-parallel automata as the more general model - while affording increased encapsulation. We then investigate the contribution of each of the three idioms to the descriptive succinctness of the model as a whole, and show that they each have their unique succinctness advantages that are not subsumed by their counterparts. Our results contribute to a rigorous basis for assessing the complexity of specifying, developing and maintaining complex concurrent software.
Cite as

David Harel, Guy Katz, Robby Lampert, Assaf Marron, and Gera Weiss. On the Succinctness of Idioms for Concurrent Programming. In 26th International Conference on Concurrency Theory (CONCUR 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 42, pp. 85-99, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015)

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@InProceedings{harel_et_al:LIPIcs.CONCUR.2015.85,
  author =	{Harel, David and Katz, Guy and Lampert, Robby and Marron, Assaf and Weiss, Gera},
  title =	{{On the Succinctness of Idioms for Concurrent Programming}},
  booktitle =	{26th International Conference on Concurrency Theory (CONCUR 2015)},
  pages =	{85--99},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-91-0},
  ISSN =	{1868-8969},
  year =	{2015},
  volume =	{42},
  editor =	{Aceto, Luca and de Frutos Escrig, David},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2015.85},
  URN =		{urn:nbn:de:0030-drops-53849},
  doi =		{10.4230/LIPIcs.CONCUR.2015.85},
  annote =	{Keywords: Descriptive Succinctness, Module Size, Automata, Bounded Concurrency}
}
Document
DOI: 10.4230/DagSemProc.06351.1
06351 Abstracts Collection – Methods for Modelling Software Systems (MMOSS)

Authors: Ed Brinksma, David Harel, Angelika Mader, Perdita Stevens, and Roel Wieringa

Published in: Dagstuhl Seminar Proceedings, Volume 6351, Methods for Modelling Software Systems (MMOSS) (2007)

Abstract
From 27.08.06 to 01.09.06, the Dagstuhl Seminar 06351 ``Methods for Modelling Software Systems (MMOSS)'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available.
Cite as

Ed Brinksma, David Harel, Angelika Mader, Perdita Stevens, and Roel Wieringa. 06351 Abstracts Collection – Methods for Modelling Software Systems (MMOSS). In Methods for Modelling Software Systems (MMOSS). Dagstuhl Seminar Proceedings, Volume 6351, pp. 1-17, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{brinksma_et_al:DagSemProc.06351.1,
  author =	{Brinksma, Ed and Harel, David and Mader, Angelika and Stevens, Perdita and Wieringa, Roel},
  title =	{{06351 Abstracts Collection – Methods for Modelling Software Systems (MMOSS)}},
  booktitle =	{Methods for Modelling Software Systems (MMOSS)},
  pages =	{1--17},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{6351},
  editor =	{Ed Brinksma and David Harel and Angelika Mader and Perdita Stevens and Roel Wieringa},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.06351.1},
  URN =		{urn:nbn:de:0030-drops-9586},
  doi =		{10.4230/DagSemProc.06351.1},
  annote =	{Keywords: Modelling Methods, Design Models, Verification Models, Problem-solution co-refinement}
}
Document
DOI: 10.4230/DagSemProc.06351.2
06351 Summary – Methods for Modelling Software Systems (MMOSS)

Authors: Ed Brinksma, David Harel, Angelika Mader, Perdita Stevens, and Roel Wieringa

Published in: Dagstuhl Seminar Proceedings, Volume 6351, Methods for Modelling Software Systems (MMOSS) (2007)

Abstract
We survey the key objectives and the structure of this Dagstuhl seminar, and discuss common themes that emerged.
Cite as

Ed Brinksma, David Harel, Angelika Mader, Perdita Stevens, and Roel Wieringa. 06351 Summary – Methods for Modelling Software Systems (MMOSS). In Methods for Modelling Software Systems (MMOSS). Dagstuhl Seminar Proceedings, Volume 6351, pp. 1-4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{brinksma_et_al:DagSemProc.06351.2,
  author =	{Brinksma, Ed and Harel, David and Mader, Angelika and Stevens, Perdita and Wieringa, Roel},
  title =	{{06351 Summary – Methods for Modelling Software Systems (MMOSS)}},
  booktitle =	{Methods for Modelling Software Systems (MMOSS)},
  pages =	{1--4},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{6351},
  editor =	{Ed Brinksma and David Harel and Angelika Mader and Perdita Stevens and Roel Wieringa},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.06351.2},
  URN =		{urn:nbn:de:0030-drops-9574},
  doi =		{10.4230/DagSemProc.06351.2},
  annote =	{Keywords: Modelling Methods, Design Models, Verification Models, Problem-solution co-refinement}
}
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