11 Search Results for "Steinmetz, Ralf"

Document
DOI: 10.4230/DagRep.3.3.75
Future Internet (Dagstuhl Seminar 13131)

Authors: Jon Crowcroft, Markus Fidler, Klara Nahrstedt, and Ralf Steinmetz

Published in: Dagstuhl Reports, Volume 3, Issue 3 (2013)

Abstract
This report documents the program and the outcomes of Dagstuhl Seminar 13131 "Future Internet". At the seminar, about 40 invited researchers from academia and industry discussed the promises, approaches, and open challenges of the Future Internet. This report gives a general overview of the presentations and outcomes of discussions of the seminar.
Cite as

Jon Crowcroft, Markus Fidler, Klara Nahrstedt, and Ralf Steinmetz. Future Internet (Dagstuhl Seminar 13131). In Dagstuhl Reports, Volume 3, Issue 3, pp. 75-99, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2013)

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@Article{crowcroft_et_al:DagRep.3.3.75,
  author =	{Crowcroft, Jon and Fidler, Markus and Nahrstedt, Klara and Steinmetz, Ralf},
  title =	{{Future Internet (Dagstuhl Seminar 13131)}},
  pages =	{75--99},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2013},
  volume =	{3},
  number =	{3},
  editor =	{Crowcroft, Jon and Fidler, Markus and Nahrstedt, Klara and Steinmetz, Ralf},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagRep.3.3.75},
  URN =		{urn:nbn:de:0030-drops-40736},
  doi =		{10.4230/DagRep.3.3.75},
  annote =	{Keywords: Future Internet, Network Design, Testbed, Software Defined Networking, Virtualization, OpenFlow}
}
Document
DOI: 10.4230/OASIcs.KiVS.2011.239
Does Proactive Secret Sharing Perform in Peer-to-Peer Systems?

Authors: Nicolas C. Liebau, Andreas U. Mauthe, Vasilios Darlagiannis, and Ralf Steinmetz

Published in: OASIcs, Volume 17, 17th GI/ITG Conference on Communication in Distributed Systems (KiVS 2011)

Abstract
Trustworthy applications in fully decentralized systems require a trust anchor. This paper describes how such an anchor can be implemented efficiently in p2p systems. The basic concept is to use threshold cryptography in order to sign messages by a quorum of peers. The focus is put on advanced mechanisms to secure the shares of the secret key over time, using proactive secret sharing. This mechanism was researched in context of the token-based accounting scheme.
Cite as

Nicolas C. Liebau, Andreas U. Mauthe, Vasilios Darlagiannis, and Ralf Steinmetz. Does Proactive Secret Sharing Perform in Peer-to-Peer Systems?. In 17th GI/ITG Conference on Communication in Distributed Systems (KiVS 2011). Open Access Series in Informatics (OASIcs), Volume 17, pp. 239-244, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2011)

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@InProceedings{liebau_et_al:OASIcs.KiVS.2011.239,
  author =	{Liebau, Nicolas C. and Mauthe, Andreas U. and Darlagiannis, Vasilios and Steinmetz, Ralf},
  title =	{{Does Proactive Secret Sharing Perform in Peer-to-Peer Systems?}},
  booktitle =	{17th GI/ITG Conference on Communication in Distributed Systems (KiVS 2011)},
  pages =	{239--244},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-27-9},
  ISSN =	{2190-6807},
  year =	{2011},
  volume =	{17},
  editor =	{Luttenberger, Norbert and Peters, Hagen},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.KiVS.2011.239},
  URN =		{urn:nbn:de:0030-drops-29818},
  doi =		{10.4230/OASIcs.KiVS.2011.239},
  annote =	{Keywords: peer-to-peer, proactive secret sharing}
}
Document
DOI: 10.4230/DagSemProc.06131.1
06131 Abstracts Collection – Peer-to -Peer -Systems and -Applications

Authors: Anthony D. Joseph, Ralf Steinmetz, Ion Stoica, and Klaus Wehrle

Published in: Dagstuhl Seminar Proceedings, Volume 6131, Peer-to-Peer-Systems and -Applications (2006)

Abstract
From 26.03.06 to 29.03.06, the Dagstuhl Seminar 06131 ``Peer-to-Peer-Systems and -Applications'' 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

Anthony D. Joseph, Ralf Steinmetz, Ion Stoica, and Klaus Wehrle. 06131 Abstracts Collection – Peer-to -Peer -Systems and -Applications. In Peer-to-Peer-Systems and -Applications. Dagstuhl Seminar Proceedings, Volume 6131, pp. 1-10, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{joseph_et_al:DagSemProc.06131.1,
  author =	{Joseph, Anthony D. and Steinmetz, Ralf and Stoica, Ion and Wehrle, Klaus},
  title =	{{06131 Abstracts Collection – Peer-to -Peer -Systems and -Applications}},
  booktitle =	{Peer-to-Peer-Systems and -Applications},
  pages =	{1--10},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{6131},
  editor =	{Anthony D. Joseph and Ralf Steinmetz and Klaus Wehrle},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.06131.1},
  URN =		{urn:nbn:de:0030-drops-8455},
  doi =		{10.4230/DagSemProc.06131.1},
  annote =	{Keywords: Peer-to-Peer, self-organisation, massively distributed systems}
}
Document
DOI: 10.4230/DagSemProc.06131.2
06131 Executive Summary – Peer-to-Peer-Systems and -Applications

Authors: Anthony D. Joseph, Ralf Steinmetz, Ion Stoica, and Klaus Wehrle

Published in: Dagstuhl Seminar Proceedings, Volume 6131, Peer-to-Peer-Systems and -Applications (2006)

Abstract
This is the executive summary of Dagstuhl Seminar 06131, "Peer-to-Peer-Systems and -Applications". The seminar was held from March 26th to March 29th, 2006, at the International Conference and Research Center for Computer Science at Castle Dagstuhl, Germany.
Cite as

Anthony D. Joseph, Ralf Steinmetz, Ion Stoica, and Klaus Wehrle. 06131 Executive Summary – Peer-to-Peer-Systems and -Applications. In Peer-to-Peer-Systems and -Applications. Dagstuhl Seminar Proceedings, Volume 6131, pp. 1-4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{joseph_et_al:DagSemProc.06131.2,
  author =	{Joseph, Anthony D. and Steinmetz, Ralf and Stoica, Ion and Wehrle, Klaus},
  title =	{{06131 Executive Summary – Peer-to-Peer-Systems and -Applications}},
  booktitle =	{Peer-to-Peer-Systems and -Applications},
  pages =	{1--4},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{6131},
  editor =	{Anthony D. Joseph and Ralf Steinmetz and Klaus Wehrle},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.06131.2},
  URN =		{urn:nbn:de:0030-drops-8522},
  doi =		{10.4230/DagSemProc.06131.2},
  annote =	{Keywords: Peer-to-Peer, self-organisation, massively distributed systems}
}
Document
DOI: 10.4230/DagSemProc.06131.3
Fairness in Peer-to-Peer Networks

Authors: Kolja Eger and Ulrich Killat

Published in: Dagstuhl Seminar Proceedings, Volume 6131, Peer-to-Peer-Systems and -Applications (2006)

Abstract
The first Peer-to-Peer (P2P) networks were based mainly on the altruistic behaviour of its peers. Although newer implementations incorporate some kind of incentive mechanism to award sharing peers, no P2P network assures some quality of service. Our work is meant as a first step towards the development of P2P networks with quality of service. We propose a distributed resource allocation algorithm where peers control the service rate to its neighbours. This algorithm is based on the congestion pricing principle known from IP networks and ensures some form of fairness. Hence a peer gets a fair share of the resources available in the P2P network weighted by its contribution to the network. We present the first simulation results about the convergence of our algorithm and its functionality in large and varying networks.
Cite as

Kolja Eger and Ulrich Killat. Fairness in Peer-to-Peer Networks. In Peer-to-Peer-Systems and -Applications. Dagstuhl Seminar Proceedings, Volume 6131, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{eger_et_al:DagSemProc.06131.3,
  author =	{Eger, Kolja and Killat, Ulrich},
  title =	{{Fairness in Peer-to-Peer Networks}},
  booktitle =	{Peer-to-Peer-Systems and -Applications},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{6131},
  editor =	{Anthony D. Joseph and Ralf Steinmetz and Klaus Wehrle},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.06131.3},
  URN =		{urn:nbn:de:0030-drops-6452},
  doi =		{10.4230/DagSemProc.06131.3},
  annote =	{Keywords: Pricing, Rate Control, Resource Allocation, Distributed Optimisation, Fairness, P2P Networks}
}
Document
DOI: 10.4230/DagSemProc.06131.4
On the Topologies Formed by Selfish Peers

Authors: Stefan Schmid, Thomas Moscibroda, and Roger Wattenhofer

Published in: Dagstuhl Seminar Proceedings, Volume 6131, Peer-to-Peer-Systems and -Applications (2006)

Abstract
Many P2P systems are only proven efficient for static environments. However, in practice, P2P systems are often very dynamic in the sense that peers can join and leave a system at any time and concurrently. In the first part of my talk, I will present a DHT we have developed recently in our group which maintains desirable properties under worst-case churn. In the second part of my talk, we will briefly look at another challenge of prime importance in P2P computing, namely selfishness. Concretely, some results are presented concerning the impact of selfish behavior on the performance of P2P topologies.
Cite as

Stefan Schmid, Thomas Moscibroda, and Roger Wattenhofer. On the Topologies Formed by Selfish Peers. In Peer-to-Peer-Systems and -Applications. Dagstuhl Seminar Proceedings, Volume 6131, pp. 1-5, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2006)

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@InProceedings{schmid_et_al:DagSemProc.06131.4,
  author =	{Schmid, Stefan and Moscibroda, Thomas and Wattenhofer, Roger},
  title =	{{On the Topologies Formed by Selfish Peers}},
  booktitle =	{Peer-to-Peer-Systems and -Applications},
  pages =	{1--5},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2006},
  volume =	{6131},
  editor =	{Anthony D. Joseph and Ralf Steinmetz and Klaus Wehrle},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.06131.4},
  URN =		{urn:nbn:de:0030-drops-6431},
  doi =		{10.4230/DagSemProc.06131.4},
  annote =	{Keywords: Churn, Selfishness, P2P Topologies}
}
Document
DOI: 10.4230/DagSemProc.06131.5
Taming Dynamic and Selfish Peers

Authors: Stefan Schmid, Fabian Kuhn, Thomas Moscibroda, and Roger Wattenhofer

Published in: Dagstuhl Seminar Proceedings, Volume 6131, Peer-to-Peer-Systems and -Applications (2006)

Abstract
Peer-to-peer systems are often faced with the problem of frequent membership changes. However, many systems are only proven efficient or correct in static environments. In my talk, I will present techniques to maintain desirable properties of a distributed hash table (low peer degree, low network diameter) in spite of ongoing and concurrent dynamics. I will then go on and study the effect of peers not acting according to our protocols. Concretely, I assume that peers are selfish and choose the behavior which maximizes their utility. I will report on our results concerning the impact of selfishness on the peer-to-peer topology.
Cite as

Stefan Schmid, Fabian Kuhn, Thomas Moscibroda, and Roger Wattenhofer. Taming Dynamic and Selfish Peers. In Peer-to-Peer-Systems and -Applications. Dagstuhl Seminar Proceedings, Volume 6131, pp. 1-14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2006)

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@InProceedings{schmid_et_al:DagSemProc.06131.5,
  author =	{Schmid, Stefan and Kuhn, Fabian and Moscibroda, Thomas and Wattenhofer, Roger},
  title =	{{Taming Dynamic and Selfish Peers}},
  booktitle =	{Peer-to-Peer-Systems and -Applications},
  pages =	{1--14},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2006},
  volume =	{6131},
  editor =	{Anthony D. Joseph and Ralf Steinmetz and Klaus Wehrle},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.06131.5},
  URN =		{urn:nbn:de:0030-drops-6477},
  doi =		{10.4230/DagSemProc.06131.5},
  annote =	{Keywords: Churn, Selfishness, P2P Topologies}
}
Document
DOI: 10.4230/DagSemProc.04201.1
04201 Abstracts Collection – Content Distribution Infrastructures

Authors: Carsten Griwodz, Thomas Peter Plagemann, and Ralf Steinmetz

Published in: Dagstuhl Seminar Proceedings, Volume 4201, Content Distribution Infrastructures (2006)

Abstract
From 11.05.04 to 14.05.04, the Dagstuhl Seminar 04201 ``Content Distribution Infrastructures'' 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

Carsten Griwodz, Thomas Peter Plagemann, and Ralf Steinmetz. 04201 Abstracts Collection – Content Distribution Infrastructures. In Content Distribution Infrastructures. Dagstuhl Seminar Proceedings, Volume 4201, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2006)

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@InProceedings{griwodz_et_al:DagSemProc.04201.1,
  author =	{Griwodz, Carsten and Plagemann, Thomas Peter and Steinmetz, Ralf},
  title =	{{04201 Abstracts Collection – Content Distribution Infrastructures}},
  booktitle =	{Content Distribution Infrastructures},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2006},
  volume =	{4201},
  editor =	{Carsten Griwodz and Thomas Peter Plagemann and Ralf Steinemetz},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.04201.1},
  URN =		{urn:nbn:de:0030-drops-5039},
  doi =		{10.4230/DagSemProc.04201.1},
  annote =	{Keywords: Content distribution networks, peer-to-peer, overlay networks}
}
Document
DOI: 10.4230/DagSemProc.04201.2
04201 Summary – Content Distribution Infrastructures

Authors: Carsten Griwodz, Thomas Peter Plagemann, and Ralf Steinmetz

Published in: Dagstuhl Seminar Proceedings, Volume 4201, Content Distribution Infrastructures (2006)

Abstract
We provide a summary of the Dagstuhl workshop on content distribution infrastructures. The presentations and group discussions of the workshop are summarized in context, and visionary and outrageous opinions of the workshop participants are described.
Cite as

Carsten Griwodz, Thomas Peter Plagemann, and Ralf Steinmetz. 04201 Summary – Content Distribution Infrastructures. In Content Distribution Infrastructures. Dagstuhl Seminar Proceedings, Volume 4201, pp. 1-6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2006)

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@InProceedings{griwodz_et_al:DagSemProc.04201.2,
  author =	{Griwodz, Carsten and Plagemann, Thomas Peter and Steinmetz, Ralf},
  title =	{{04201 Summary – Content Distribution Infrastructures}},
  booktitle =	{Content Distribution Infrastructures},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2006},
  volume =	{4201},
  editor =	{Carsten Griwodz and Thomas Peter Plagemann and Ralf Steinemetz},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.04201.2},
  URN =		{urn:nbn:de:0030-drops-5021},
  doi =		{10.4230/DagSemProc.04201.2},
  annote =	{Keywords: Content distribution networks, peer-to-peer, overlay networks}
}
Document
DOI: 10.4230/DagSemRep.277
Multimedia for Multimedia: Learning and Teaching at the University in the Next Decade (Dagstuhl Seminar 00241)

Authors: Wolfgang Effelsberg, Edward Fox, Nicolas D. Georganas, and Ralf Steinmetz

Published in: Dagstuhl Seminar Reports. Dagstuhl Seminar Reports, Volume 1 (2021)

Abstract
Cite as

Wolfgang Effelsberg, Edward Fox, Nicolas D. Georganas, and Ralf Steinmetz. Multimedia for Multimedia: Learning and Teaching at the University in the Next Decade (Dagstuhl Seminar 00241). Dagstuhl Seminar Report 277, pp. 1-26, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2000)

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@TechReport{effelsberg_et_al:DagSemRep.277,
  author =	{Effelsberg, Wolfgang and Fox, Edward and Georganas, Nicolas D. and Steinmetz, Ralf},
  title =	{{Multimedia for Multimedia: Learning and Teaching at the University in the Next Decade (Dagstuhl Seminar 00241)}},
  pages =	{1--26},
  ISSN =	{1619-0203},
  year =	{2000},
  type = 	{Dagstuhl Seminar Report},
  number =	{277},
  institution =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemRep.277},
  URN =		{urn:nbn:de:0030-drops-151617},
  doi =		{10.4230/DagSemRep.277},
}
Document
DOI: 10.4230/DagSemRep.184
Multimedia Synchronization and Resource Management in Advanced Multimedia Environments (Dagstuhl Seminar 9727)

Authors: Nicolas Georganas, Thomas C. Little, Kurt Rothermel, and Ralf Steinmetz

Published in: Dagstuhl Seminar Reports. Dagstuhl Seminar Reports, Volume 1 (2021)

Abstract
Cite as

Nicolas Georganas, Thomas C. Little, Kurt Rothermel, and Ralf Steinmetz. Multimedia Synchronization and Resource Management in Advanced Multimedia Environments (Dagstuhl Seminar 9727). Dagstuhl Seminar Report 184, pp. 1-14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (1997)

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@TechReport{georganas_et_al:DagSemRep.184,
  author =	{Georganas, Nicolas and Little, Thomas C. and Rothermel, Kurt and Steinmetz, Ralf},
  title =	{{Multimedia Synchronization and Resource Management in Advanced Multimedia Environments (Dagstuhl Seminar 9727)}},
  pages =	{1--14},
  ISSN =	{1619-0203},
  year =	{1997},
  type = 	{Dagstuhl Seminar Report},
  number =	{184},
  institution =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemRep.184},
  URN =		{urn:nbn:de:0030-drops-150718},
  doi =		{10.4230/DagSemRep.184},
}
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