8 Search Results for "Steffen, Bernhard"

Document
Position
DOI: 10.4230/TGDK.2.1.2
Grounding Stream Reasoning Research

Authors: Pieter Bonte, Jean-Paul Calbimonte, Daniel de Leng, Daniele Dell'Aglio, Emanuele Della Valle, Thomas Eiter, Federico Giannini, Fredrik Heintz, Konstantin Schekotihin, Danh Le-Phuoc, Alessandra Mileo, Patrik Schneider, Riccardo Tommasini, Jacopo Urbani, and Giacomo Ziffer

Published in: TGDK, Volume 2, Issue 1 (2024): Special Issue on Trends in Graph Data and Knowledge - Part 2. Transactions on Graph Data and Knowledge, Volume 2, Issue 1

Abstract
In the last decade, there has been a growing interest in applying AI technologies to implement complex data analytics over data streams. To this end, researchers in various fields have been organising a yearly event called the "Stream Reasoning Workshop" to share perspectives, challenges, and experiences around this topic. In this paper, the previous organisers of the workshops and other community members provide a summary of the main research results that have been discussed during the first six editions of the event. These results can be categorised into four main research areas: The first is concerned with the technological challenges related to handling large data streams. The second area aims at adapting and extending existing semantic technologies to data streams. The third and fourth areas focus on how to implement reasoning techniques, either considering deductive or inductive techniques, to extract new and valuable knowledge from the data in the stream. This summary is written not only to provide a crystallisation of the field, but also to point out distinctive traits of the stream reasoning community. Moreover, it also provides a foundation for future research by enumerating a list of use cases and open challenges, to stimulate others to join this exciting research area.
Cite as

Pieter Bonte, Jean-Paul Calbimonte, Daniel de Leng, Daniele Dell'Aglio, Emanuele Della Valle, Thomas Eiter, Federico Giannini, Fredrik Heintz, Konstantin Schekotihin, Danh Le-Phuoc, Alessandra Mileo, Patrik Schneider, Riccardo Tommasini, Jacopo Urbani, and Giacomo Ziffer. Grounding Stream Reasoning Research. In Special Issue on Trends in Graph Data and Knowledge - Part 2. Transactions on Graph Data and Knowledge (TGDK), Volume 2, Issue 1, pp. 2:1-2:47, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024)

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@Article{bonte_et_al:TGDK.2.1.2,
  author =	{Bonte, Pieter and Calbimonte, Jean-Paul and de Leng, Daniel and Dell'Aglio, Daniele and Della Valle, Emanuele and Eiter, Thomas and Giannini, Federico and Heintz, Fredrik and Schekotihin, Konstantin and Le-Phuoc, Danh and Mileo, Alessandra and Schneider, Patrik and Tommasini, Riccardo and Urbani, Jacopo and Ziffer, Giacomo},
  title =	{{Grounding Stream Reasoning Research}},
  journal =	{Transactions on Graph Data and Knowledge},
  pages =	{2:1--2:47},
  ISSN =	{2942-7517},
  year =	{2024},
  volume =	{2},
  number =	{1},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/TGDK.2.1.2},
  URN =		{urn:nbn:de:0030-drops-198597},
  doi =		{10.4230/TGDK.2.1.2},
  annote =	{Keywords: Stream Reasoning, Stream Processing, RDF streams, Streaming Linked Data, Continuous query processing, Temporal Logics, High-performance computing, Databases}
}
Document
Survey
DOI: 10.4230/TGDK.2.1.3
Semantic Web: Past, Present, and Future

Authors: Ansgar Scherp, Gerd Groener, Petr Škoda, Katja Hose, and Maria-Esther Vidal

Published in: TGDK, Volume 2, Issue 1 (2024): Special Issue on Trends in Graph Data and Knowledge - Part 2. Transactions on Graph Data and Knowledge, Volume 2, Issue 1

Abstract
Ever since the vision was formulated, the Semantic Web has inspired many generations of innovations. Semantic technologies have been used to share vast amounts of information on the Web, enhance them with semantics to give them meaning, and enable inference and reasoning on them. Throughout the years, semantic technologies, and in particular knowledge graphs, have been used in search engines, data integration, enterprise settings, and machine learning. In this paper, we recap the classical concepts and foundations of the Semantic Web as well as modern and recent concepts and applications, building upon these foundations. The classical topics we cover include knowledge representation, creating and validating knowledge on the Web, reasoning and linking, and distributed querying. We enhance this classical view of the so-called "Semantic Web Layer Cake" with an update of recent concepts that include provenance, security and trust, as well as a discussion of practical impacts from industry-led contributions. We conclude with an outlook on the future directions of the Semantic Web. This is a living document. If you like to contribute, please contact the first author and visit: https://github.com/ascherp/semantic-web-primer
Cite as

Ansgar Scherp, Gerd Groener, Petr Škoda, Katja Hose, and Maria-Esther Vidal. Semantic Web: Past, Present, and Future. In Special Issue on Trends in Graph Data and Knowledge - Part 2. Transactions on Graph Data and Knowledge (TGDK), Volume 2, Issue 1, pp. 3:1-3:37, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024)

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@Article{scherp_et_al:TGDK.2.1.3,
  author =	{Scherp, Ansgar and Groener, Gerd and \v{S}koda, Petr and Hose, Katja and Vidal, Maria-Esther},
  title =	{{Semantic Web: Past, Present, and Future}},
  journal =	{Transactions on Graph Data and Knowledge},
  pages =	{3:1--3:37},
  ISSN =	{2942-7517},
  year =	{2024},
  volume =	{2},
  number =	{1},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/TGDK.2.1.3},
  URN =		{urn:nbn:de:0030-drops-198607},
  doi =		{10.4230/TGDK.2.1.3},
  annote =	{Keywords: Linked Open Data, Semantic Web Graphs, Knowledge Graphs}
}
Document
Survey
DOI: 10.4230/TGDK.2.1.4
Logics for Conceptual Data Modelling: A Review

Authors: Pablo R. Fillottrani and C. Maria Keet

Published in: TGDK, Volume 2, Issue 1 (2024): Special Issue on Trends in Graph Data and Knowledge - Part 2. Transactions on Graph Data and Knowledge, Volume 2, Issue 1

Abstract
Information modelling for databases and object-oriented information systems avails of conceptual data modelling languages such as EER and UML Class Diagrams. Many attempts exist to add logical rigour to them, for various reasons and with disparate strengths. In this paper we aim to provide a structured overview of the many efforts. We focus on aims, approaches to the formalisation, including key dimensions of choice points, popular logics used, and the main relevant reasoning services. We close with current challenges and research directions.
Cite as

Pablo R. Fillottrani and C. Maria Keet. Logics for Conceptual Data Modelling: A Review. In Special Issue on Trends in Graph Data and Knowledge - Part 2. Transactions on Graph Data and Knowledge (TGDK), Volume 2, Issue 1, pp. 4:1-4:30, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024)

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@Article{fillottrani_et_al:TGDK.2.1.4,
  author =	{Fillottrani, Pablo R. and Keet, C. Maria},
  title =	{{Logics for Conceptual Data Modelling: A Review}},
  journal =	{Transactions on Graph Data and Knowledge},
  pages =	{4:1--4:30},
  ISSN =	{2942-7517},
  year =	{2024},
  volume =	{2},
  number =	{1},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/TGDK.2.1.4},
  URN =		{urn:nbn:de:0030-drops-198616},
  doi =		{10.4230/TGDK.2.1.4},
  annote =	{Keywords: Conceptual Data Modelling, EER, UML, Description Logics, OWL}
}
Document
DOI: 10.4230/DagRep.12.9.20
Model-Driven Engineering of Digital Twins (Dagstuhl Seminar 22362)

Authors: Loek Cleophas, Thomas Godfrey, Djamel Eddine Khelladi, Daniel Lehner, Benoit Combemale, Bernhard Rumpe, and Steffen Zschaler

Published in: Dagstuhl Reports, Volume 12, Issue 9 (2023)

Abstract
This report documents the program and the outcomes of Dagstuhl Seminar 22362 "Model-Driven Engineering of Digital Twins". Digital twins are an emerging concept with the potential for revolutionising the way we interact with the physical world. Digital twins can be used for improved analysis and understanding of complex systems as well as for control and transformation of these systems. Digital twins are themselves complex software systems, posing novel software-engineering challenges, which have so far not been sufficiently addressed by the software-engineering research community. The seminar aimed as a key outcome to contribute to a solid research roadmap for the new Software Engineering subdiscipline of Model-Based Development of Digital Twins. This paper is an intermediate result, which is thought to be further discussed in the research community that has also been built using this seminar.
Cite as

Loek Cleophas, Thomas Godfrey, Djamel Eddine Khelladi, Daniel Lehner, Benoit Combemale, Bernhard Rumpe, and Steffen Zschaler. Model-Driven Engineering of Digital Twins (Dagstuhl Seminar 22362). In Dagstuhl Reports, Volume 12, Issue 9, pp. 20-40, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2023)

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@Article{cleophas_et_al:DagRep.12.9.20,
  author =	{Cleophas, Loek and Godfrey, Thomas and Khelladi, Djamel Eddine and Lehner, Daniel and Combemale, Benoit and Rumpe, Bernhard and Zschaler, Steffen},
  title =	{{Model-Driven Engineering of Digital Twins (Dagstuhl Seminar 22362)}},
  pages =	{20--40},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2023},
  volume =	{12},
  number =	{9},
  editor =	{Combemale, Benoit and Rumpe, Bernhard and Zschaler, Steffen},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.12.9.20},
  URN =		{urn:nbn:de:0030-drops-178080},
  doi =		{10.4230/DagRep.12.9.20},
  annote =	{Keywords: Software Engineering, Model-Driven Engineering, Digital Twins, Model Management, Data Management, Models@runtime}
}
Document
DOI: 10.4230/DagSemProc.09401.1
09401 Abstracts Collection – Machine learning approaches to statistical dependences and causality

Authors: Dominik Janzing, Steffen Lauritzen, and Bernhard Schölkopf

Published in: Dagstuhl Seminar Proceedings, Volume 9401, Machine learning approaches to statistical dependences and causality (2010)

Abstract
From 27.09.2009 to 02.10.2009, the Dagstuhl Seminar 09401 ``Machine learning approaches to statistical dependences and causality'' was held in Schloss Dagstuhl~--~Leibniz Center for Informatics. 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

Dominik Janzing, Steffen Lauritzen, and Bernhard Schölkopf. 09401 Abstracts Collection – Machine learning approaches to statistical dependences and causality. In Machine learning approaches to statistical dependences and causality. Dagstuhl Seminar Proceedings, Volume 9401, pp. 1-15, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2010)

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@InProceedings{janzing_et_al:DagSemProc.09401.1,
  author =	{Janzing, Dominik and Lauritzen, Steffen and Sch\"{o}lkopf, Bernhard},
  title =	{{09401 Abstracts Collection – Machine learning approaches to statistical dependences and causality }},
  booktitle =	{Machine learning approaches to statistical dependences and causality},
  pages =	{1--15},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2010},
  volume =	{9401},
  editor =	{Dominik Janzing and Steffen Lauritzen and Bernhard Sch\"{o}lkopf},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09401.1},
  URN =		{urn:nbn:de:0030-drops-23636},
  doi =		{10.4230/DagSemProc.09401.1},
  annote =	{Keywords: Machine learning, statistical dependences, causality}
}
Document
DOI: 10.4230/DagSemProc.05462.8
Service-Oriented Design: The jABC Approach

Authors: Tiziana Margaria, Bernhard Steffen, and Manfred Reitenspieß

Published in: Dagstuhl Seminar Proceedings, Volume 5462, Service Oriented Computing (SOC) (2006)

Abstract
Reviewing our 10 years of experience in service engineering for telecommunication systems from the point of view of Service-Oriented Design then and now, we observe that much is common to the two communities. We aim in our current research at establishing a link to the notions used by the service-oriented programming (SO) community. We are convinced that combined approaches, that blend the flexibility of the current SO-scenario with the rigour and semantic standardization culture of the telecommunication community will dramatically increase the productivity of the development of a large class of software systems. Incremental formalization and automatic verification techniques may be again the key to achieving confidence and reliability for services that interact and interoperate on a large distributed scale.
Cite as

Tiziana Margaria, Bernhard Steffen, and Manfred Reitenspieß. Service-Oriented Design: The jABC Approach. In Service Oriented Computing (SOC). Dagstuhl Seminar Proceedings, Volume 5462, pp. 1-4, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2006)

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@InProceedings{margaria_et_al:DagSemProc.05462.8,
  author =	{Margaria, Tiziana and Steffen, Bernhard and Reitenspie{\ss}, Manfred},
  title =	{{Service-Oriented Design: The jABC Approach}},
  booktitle =	{Service Oriented Computing (SOC)},
  pages =	{1--4},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2006},
  volume =	{5462},
  editor =	{Francisco Cubera and Bernd J. Kr\"{a}mer and Michael P. Papazoglou},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.05462.8},
  URN =		{urn:nbn:de:0030-drops-5217},
  doi =		{10.4230/DagSemProc.05462.8},
  annote =	{Keywords: Service-Oriented Design, Telecommunication Services, Service platforms}
}
Document
DOI: 10.4230/DagSemRep.144
Semantics of Concurrent Systems - Foundations and Applications (Dagstuhl Seminar 9619)

Authors: Manfred Droste, Ernst-Rüdiger Olderog, Bernhard Steffen, and Glynn Winskel

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

Abstract
Cite as

Manfred Droste, Ernst-Rüdiger Olderog, Bernhard Steffen, and Glynn Winskel. Semantics of Concurrent Systems - Foundations and Applications (Dagstuhl Seminar 9619). Dagstuhl Seminar Report 144, pp. 1-18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (1996)

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@TechReport{droste_et_al:DagSemRep.144,
  author =	{Droste, Manfred and Olderog, Ernst-R\"{u}diger and Steffen, Bernhard and Winskel, Glynn},
  title =	{{Semantics of Concurrent Systems - Foundations and Applications (Dagstuhl Seminar 9619)}},
  pages =	{1--18},
  ISSN =	{1619-0203},
  year =	{1996},
  type = 	{Dagstuhl Seminar Report},
  number =	{144},
  institution =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemRep.144},
  URN =		{urn:nbn:de:0030-drops-150310},
  doi =		{10.4230/DagSemRep.144},
}
Document
DOI: 10.4230/DagSemRep.81
Algorithms in Automata Theory (Dagstuhl Seminar 9406)

Authors: André Arnold, Helmut Seidl, and Bernhard Steffen

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

Abstract
Cite as

André Arnold, Helmut Seidl, and Bernhard Steffen. Algorithms in Automata Theory (Dagstuhl Seminar 9406). Dagstuhl Seminar Report 81, pp. 1-28, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (1994)

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@TechReport{arnold_et_al:DagSemRep.81,
  author =	{Arnold, Andr\'{e} and Seidl, Helmut and Steffen, Bernhard},
  title =	{{Algorithms in Automata Theory (Dagstuhl Seminar 9406)}},
  pages =	{1--28},
  ISSN =	{1619-0203},
  year =	{1994},
  type = 	{Dagstuhl Seminar Report},
  number =	{81},
  institution =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemRep.81},
  URN =		{urn:nbn:de:0030-drops-149691},
  doi =		{10.4230/DagSemRep.81},
}
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