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Documents authored by Weikum, Gerhard


Document
Data, Responsibly (Dagstuhl Seminar 16291)

Authors: Serge Abiteboul, Gerome Miklau, Julia Stoyanovich, and Gerhard Weikum

Published in: Dagstuhl Reports, Volume 6, Issue 7 (2016)


Abstract
Big data technology promises to improve people's lives, accelerate scientific discovery and innovation, and bring about positive societal change. Yet, if not used responsibly, large-scale data analysis and data-driven algorithmic decision-making can increase economic inequality, affirm systemic bias, and even destabilize global markets. While the potential benefits of data analysis techniques are well accepted, the importance of using them responsibly - that is, in accordance with ethical and moral norms, and with legal and policy considerations - is not yet part of the mainstream research agenda in computer science. Dagstuhl Seminar "Data, Responsibly" brought together academic and industry researchers from several areas of computer science, including a broad representation of data management, but also data mining, security/privacy, and computer networks, as well as social sciences researchers, data journalists, and those active in government think-tanks and policy initiatives. The goals of the seminar were to assess the state of data analysis in terms of fairness, transparency and diversity, identify new research challenges, and derive an agenda for computer science research and education efforts in responsible data analysis and use. While the topic of the seminar is transdisciplinary in nature, an important goal of the seminar was to identify opportunities for high-impact contributions to this important emergent area specifically from the data management community.

Cite as

Serge Abiteboul, Gerome Miklau, Julia Stoyanovich, and Gerhard Weikum. Data, Responsibly (Dagstuhl Seminar 16291). In Dagstuhl Reports, Volume 6, Issue 7, pp. 42-71, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2016)


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@Article{abiteboul_et_al:DagRep.6.7.42,
  author =	{Abiteboul, Serge and Miklau, Gerome and Stoyanovich, Julia and Weikum, Gerhard},
  title =	{{Data, Responsibly (Dagstuhl Seminar 16291)}},
  pages =	{42--71},
  journal =	{Dagstuhl Reports},
  ISSN =	{2192-5283},
  year =	{2016},
  volume =	{6},
  number =	{7},
  editor =	{Abiteboul, Serge and Miklau, Gerome and Stoyanovich, Julia and Weikum, Gerhard},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagRep.6.7.42},
  URN =		{urn:nbn:de:0030-drops-67644},
  doi =		{10.4230/DagRep.6.7.42},
  annote =	{Keywords: Data responsibly, Big data, Machine bias, Data analysis, Data management, Data mining, Fairness, Diversity, Accountability, Transparency, Personal information management, Ethics, Responsible research, Responsible innovation, Data science education}
}
Document
08111 Abstracts Collection – Ranked XML Querying

Authors: Sihem Amer-Yahia, Divesh Srivastava, and Gerhard Weikum

Published in: Dagstuhl Seminar Proceedings, Volume 8111, Ranked XML Querying (2008)


Abstract
From 09.03. to 14.03.08, the Dagstuhl Seminar 08111 ``Ranked XML Querying'' 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

Sihem Amer-Yahia, Divesh Srivastava, and Gerhard Weikum. 08111 Abstracts Collection – Ranked XML Querying. In Ranked XML Querying. Dagstuhl Seminar Proceedings, Volume 8111, pp. 1-14, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2008)


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@InProceedings{ameryahia_et_al:DagSemProc.08111.1,
  author =	{Amer-Yahia, Sihem and Srivastava, Divesh and Weikum, Gerhard},
  title =	{{08111 Abstracts Collection – Ranked XML Querying}},
  booktitle =	{Ranked XML Querying},
  pages =	{1--14},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2008},
  volume =	{8111},
  editor =	{Sihem Amer-Yahia and Divesh Srivastava and Gerhard Weikum},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.08111.1},
  URN =		{urn:nbn:de:0030-drops-15361},
  doi =		{10.4230/DagSemProc.08111.1},
  annote =	{Keywords: Scoring methods for XML, Ranking approximate XML answers, Top-K query processing, Querying structured and unstructured data, XML Full-Text Querying, Querying heterogeneous XML, Extracting structure from unstructured data, Text mining, XML data integration}
}
Document
08111 Report – Ranked XML Querying

Authors: Sihem Amer-Yahia, Djoerd Hiemstra, Thomas Roelleke, Divesh Srivastava, and Gerhard Weikum

Published in: Dagstuhl Seminar Proceedings, Volume 8111, Ranked XML Querying (2008)


Abstract
This paper is based on a five-day workshop on "Ranked XML Querying" that took place in Schloss Dagstuhl in Germany in March 2008 and was attended by 27 people from three different research communities: database systems (DB), information retrieval (IR), and Web. The seminar title was interpreted in an IR-style "andish" sense (it covered also subsets of {Ranking, XML, Querying}, with larger sets being favored) rather than the DB-style strictly conjunctive manner. So in essence, the seminar really addressed the integration of DB and IR technologies with Web 2.0 being an important target area.

Cite as

Sihem Amer-Yahia, Djoerd Hiemstra, Thomas Roelleke, Divesh Srivastava, and Gerhard Weikum. 08111 Report – Ranked XML Querying. In Ranked XML Querying. Dagstuhl Seminar Proceedings, Volume 8111, pp. 1-6, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2008)


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@InProceedings{ameryahia_et_al:DagSemProc.08111.2,
  author =	{Amer-Yahia, Sihem and Hiemstra, Djoerd and Roelleke, Thomas and Srivastava, Divesh and Weikum, Gerhard},
  title =	{{08111 Report – Ranked XML Querying}},
  booktitle =	{Ranked XML Querying},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2008},
  volume =	{8111},
  editor =	{Sihem Amer-Yahia and Divesh Srivastava and Gerhard Weikum},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.08111.2},
  URN =		{urn:nbn:de:0030-drops-15354},
  doi =		{10.4230/DagSemProc.08111.2},
  annote =	{Keywords: Scoring methods for XML, Ranking approximate XML answers, Top-K query processing, Querying structured and unstructured data, XML Full-Text Querying, Querying heterogeneous XML, Extracting structure from unstructured data, Text mining, XML data integration}
}
Document
Exploiting Community Behavior for Enhanced Link Analysis and Web Search

Authors: Julia Luxenburger and Gerhard Weikum

Published in: Dagstuhl Seminar Proceedings, Volume 7071, Web Information Retrieval and Linear Algebra Algorithms (2007)


Abstract
Methods for Web link analysis and authority ranking such as PageRank are based on the assumption that a user endorses a Web page when creating a hyperlink to this page. There is a wealth of additional user-behavior information that could be considered for improving authority analysis, for example, the history of queries that a user community posed to a search engine over an extended time period, or observations about which query-result pages were clicked on and which ones were not clicked on after a user saw the summary snippets of the top-10 results. We study enhancements of link analysis methods by incorporating additional user assessments based on query logs and click streams, including negative feedback when a query-result page does not satisfy the user demand or is even perceived as spam. Our methods use various novel forms of Markov models whose states correspond to users and queries in addition to Web pages and whose links also reflect the relationships derived from query-result clicks, query refinements, and explicit ratings.

Cite as

Julia Luxenburger and Gerhard Weikum. Exploiting Community Behavior for Enhanced Link Analysis and Web Search. In Web Information Retrieval and Linear Algebra Algorithms. Dagstuhl Seminar Proceedings, Volume 7071, pp. 1-17, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2007)


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@InProceedings{luxenburger_et_al:DagSemProc.07071.8,
  author =	{Luxenburger, Julia and Weikum, Gerhard},
  title =	{{Exploiting Community Behavior for Enhanced Link Analysis and Web Search}},
  booktitle =	{Web Information Retrieval and Linear Algebra Algorithms},
  pages =	{1--17},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7071},
  editor =	{Andreas Frommer and Michael W. Mahoney and Daniel B. Szyld},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07071.8},
  URN =		{urn:nbn:de:0030-drops-10660},
  doi =		{10.4230/DagSemProc.07071.8},
  annote =	{Keywords: Query logs, link analysis, Markov reward model}
}
Document
06121 Abstracts Collection – Atomicity: A Unifying Concept in Computer Science

Authors: Gerhard Weikum, Clifford B. Jones, David Lomet, and Alexander Romanovsky

Published in: Dagstuhl Seminar Proceedings, Volume 6121, Atomicity: A Unifying Concept in Computer Science (2006)


Abstract
From 19.03.06 to 24.03.06, the Dagstuhl Seminar 06121 ``Atomicity: A Unifying Concept in Computer Science'' 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

Gerhard Weikum, Clifford B. Jones, David Lomet, and Alexander Romanovsky. 06121 Abstracts Collection – Atomicity: A Unifying Concept in Computer Science. In Atomicity: A Unifying Concept in Computer Science. Dagstuhl Seminar Proceedings, Volume 6121, pp. 1-15, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2006)


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@InProceedings{weikum_et_al:DagSemProc.06121.1,
  author =	{Weikum, Gerhard and Jones, Clifford B. and Lomet, David and Romanovsky, Alexander},
  title =	{{06121 Abstracts Collection – Atomicity: A Unifying Concept in Computer Science}},
  booktitle =	{Atomicity: A Unifying Concept in Computer Science},
  pages =	{1--15},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2006},
  volume =	{6121},
  editor =	{Clifford B. Jones and David Lomet and Alexander Romanovsky and Gerhard Weikum},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.06121.1},
  URN =		{urn:nbn:de:0030-drops-8365},
  doi =		{10.4230/DagSemProc.06121.1},
  annote =	{Keywords: Formal methods, dependability, fault tolerance, atomic actions, databases, advanced transactional models, system structuring}
}
Document
06121 Executive Summary – Atomicity: A Unifying Concept in Computer Science

Authors: Gerhard Weikum, Clifford B. Jones, David Lomet, and Alexander Romanovsky

Published in: Dagstuhl Seminar Proceedings, Volume 6121, Atomicity: A Unifying Concept in Computer Science (2006)


Abstract
This seminar was based on and continued the interaction of different computer-science communities that was begun in an earlier Dagstuhl seminar in April 2004. Both seminars have aimed at a deeper understanding of the fundamental concept of atomic actions and their roles in system design, execution, modeling, and correctness reasoning, and at fostering collaboration, synergies, and a unified perspective across largely separated research communities. Each of the two seminar brought together about 30 researchers and industrial practitioners from the four areas of database and transaction processing systems, fault tolerance and dependable systems, formal methods, and to smaller extent, hardware architecture and programming languages. The interpretations and roles of the atomicity concept(s) vary substantially across these communities. For example, the emphasis in database systems is on algorithms and implementation techniques for atomic transactions, whereas in dependable systems and formal methods atomicity is viewed as an intentionally imposed or postulated property of system components to simplify designs and increase dependability. Nevertheless, all four communities share the hope that it will eventually be possible to unify the different scientific viewpoints into more coherent foundations, system development principles, design methodologies, and usage guidelines.

Cite as

Gerhard Weikum, Clifford B. Jones, David Lomet, and Alexander Romanovsky. 06121 Executive Summary – Atomicity: A Unifying Concept in Computer Science. In Atomicity: A Unifying Concept in Computer Science. Dagstuhl Seminar Proceedings, Volume 6121, pp. 1-4, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2006)


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@InProceedings{weikum_et_al:DagSemProc.06121.2,
  author =	{Weikum, Gerhard and Jones, Clifford B. and Lomet, David and Romanovsky, Alexander},
  title =	{{06121 Executive Summary – Atomicity: A Unifying Concept in Computer Science}},
  booktitle =	{Atomicity: A Unifying Concept in Computer Science},
  pages =	{1--4},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2006},
  volume =	{6121},
  editor =	{Clifford B. Jones and David Lomet and Alexander Romanovsky and Gerhard Weikum},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.06121.2},
  URN =		{urn:nbn:de:0030-drops-8358},
  doi =		{10.4230/DagSemProc.06121.2},
  annote =	{Keywords: Atomicity, concurrency, system structuring, abstraction, fault tolerance}
}
Document
The Atomic Manifesto: a Story in Four Quarks

Authors: Cliff Jones, David Lomet, Alexander Romanovsky, Gerhard Weikum, Alan Fekete, Marie-Claude Gaudel, Henry F. Korth, Rogerio de Lemos, Eliot Moss, Ravi Rajwar, Krithi Ramamritham, Brian Randell, and Luis Rodrigues

Published in: Dagstuhl Seminar Proceedings, Volume 4181, Atomicity in System Design and Execution (2004)


Abstract
This report summarizes the viewpoints and insights gathered in the Dagstuhl Seminar on Atomicity in System Design and Execution, which was attended by 32 people from four different scientific communities: database and transaction processing systems, fault tolerance and dependable systems, formal methods for system design and correctness reasoning, and hardware architecture and programming languages. Each community presents its position in interpreting the notion of atomicity and the existing state of the art, and each community identifies scientific challenges that should be addressed in future work. In addition, the report discusses common themes across communities and strategic research problems that require multiple communities to team up for a viable solution. The general theme of how to specify, implement, compose, and reason about extended and relaxed notions of atomicity is viewed as a key piece in coping with the pressing issue of building and maintaining highly dependable systems that comprise many components with complex interaction patterns.

Cite as

Cliff Jones, David Lomet, Alexander Romanovsky, Gerhard Weikum, Alan Fekete, Marie-Claude Gaudel, Henry F. Korth, Rogerio de Lemos, Eliot Moss, Ravi Rajwar, Krithi Ramamritham, Brian Randell, and Luis Rodrigues. The Atomic Manifesto: a Story in Four Quarks. In Atomicity in System Design and Execution. Dagstuhl Seminar Proceedings, Volume 4181, pp. 1-5, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2004)


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@InProceedings{jones_et_al:DagSemProc.04181.1,
  author =	{Jones, Cliff and Lomet, David and Romanovsky, Alexander and Weikum, Gerhard and Fekete, Alan and Gaudel, Marie-Claude and Korth, Henry F. and de Lemos, Rogerio and Moss, Eliot and Rajwar, Ravi and Ramamritham, Krithi and Randell, Brian and Rodrigues, Luis},
  title =	{{The Atomic Manifesto: a Story in Four Quarks}},
  booktitle =	{Atomicity in System Design and Execution},
  pages =	{1--5},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2004},
  volume =	{4181},
  editor =	{Cliff Jones and David Lomet and Alexander Romanovsky and Gerhard Weikum},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.04181.1},
  URN =		{urn:nbn:de:0030-drops-93},
  doi =		{10.4230/DagSemProc.04181.1},
  annote =	{Keywords: Atomic Actions , Transaction Processing , Database Systems , Dependability , Fault Tolerance , Formal Methods , Correctness Reasoning}
}
Document
Performance Enhancement in Object Bases (Dagstuhl Seminar 9614)

Authors: Umeshwar Dayal, Alfons Kemper, Guido Moerkotte, and Gerhard Weikum

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


Abstract

Cite as

Umeshwar Dayal, Alfons Kemper, Guido Moerkotte, and Gerhard Weikum. Performance Enhancement in Object Bases (Dagstuhl Seminar 9614). Dagstuhl Seminar Report 141, pp. 1-26, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (1996)


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@TechReport{dayal_et_al:DagSemRep.141,
  author =	{Dayal, Umeshwar and Kemper, Alfons and Moerkotte, Guido and Weikum, Gerhard},
  title =	{{Performance Enhancement in Object Bases (Dagstuhl Seminar 9614)}},
  pages =	{1--26},
  ISSN =	{1619-0203},
  year =	{1996},
  type = 	{Dagstuhl Seminar Report},
  number =	{141},
  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.141},
  URN =		{urn:nbn:de:0030-drops-150282},
  doi =		{10.4230/DagSemRep.141},
}
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