Georg Lausen – författare

This volume contains the lecture notes of the 10th Reasoning Web Summer School 2014, held in Athens, Greece, in September 2014. In 2014, the lecture program of the Reasoning Web introduces students to recent advances in big data aspects of semantic web and linked data, and the fundamentals of reasoning techniques that can be used to tackle big data applications.

This volume contains the lecture notes of the 10th Reasoning Web Summer School 2014, held in Athens, Greece, in September 2014. In 2014, the lecture program of the Reasoning Web introduces students to recent advances in big data aspects of semantic web and linked data, and the fundamentals of reasoning techniques that can be used to tackle big data applications.

The papers in this volume represent the technical program of the 9th Biennial WorkshoponDataBasesandProgrammingLanguages(DBPL2003),whichwas held on September 6-8, 2003, in Potsdam, Germany. The workshop meets every two years, and is a well-established forum for ideas that lie at the intersection of database and programming language research. DBPL 2003 continued the t- dition of excellence initiated by its predecessors in Rosco?, Finistre (1987), S- ishan, Oregon (1989), Nafplion, Argolida (1991), Manhattan, New York (1993), Gubbio, Umbria (1995), Estes Park, Colorado (1997), Kinloch Rannoch, Sc- land (1999), and Frascati, Rome (2001). Theprogramcommitteeselected14papersoutof22submissions,andinvited twocontributions.The16talkswerepresentedoverthreedays,insevensessions. In theinvitedtalk Jennifer Widom presented the paper CQL: a Language forContinuousQueriesoverStreamsandRelations,coauthoredbyArvindArasu andShivnathBabu.Whilealotofresearchhasbeendonerecentlyonqueryp- cessingoverdatastreams,CQLisvirtuallythe?rstproposalofaquerylanguage on streams that is a strict extension of SQL.The language is structured around a simple yet powerful idea: it has two distinct data types, relations and streams, with well-de?ned operators for mapping between them. Window speci?cation expressions, such as sliding windows, map streams to relations, while operators such as "insert stream," "delete stream," and "relation stream" map relations to streams by returning, at each moment in time, the newly inserted tuples, the deleted tuples, or a snapshot of the entire relation. The numerous examples in this paper make a convincing case for the power and usefulness of CQL.

AngestoBen durch den Einsatz von Datenbanken in der Praxis sind in den vergange- nen Jahren zahlreiche Forschungsprobleme und herausfordernde Entwicklungsaufgaben erkannt worden, fur deren Losung sich die derzeit auf dem Markt befindlichen Datenbank- systeme nur bedingt geeignet zeigen. Datenbanken werden seit vielen Jahren erfolgreich in Anwendungen eingesetzt, die durch groBe Bestiinde einfach strukturierter Daten ge- kennzeichnet sind. 1m Gegensatz dazu finden beispielsweise Hypertext-Anwendungen im Burobereich, die Verwaltung von Entwurfsdaten in ingenieurwissenschaftlichen Anwen- dungen oder auch die Entwicklung von datenbankbasierten Expertensystemen durch Da- tenbanken keine befriedigende Unterstutzung. Es werden deshalb zunehmend Konzepte diskutiert und prototypmiiBig implementiert, mittels denen sogenannte Nicht-Standard- Datenbanken realisiert werden konnen, die den Einsatzbereich bisheriger Datenbanken in die neuen Anwendungsgebiete ausdehnen.Die 1985 in Karlsruhe begonnene im zweijiihrigen Turnus veranstaltete Tagungsreihe "BTW" hat es sich zum Anliegen gemacht, vor einem Forum von Datenbank-Forschern und -Praktikern den Enwicklungsstand und die Perspektiven neuer Datenbank-Technolgie in aktuellen Einsatzgebieten zu diskutieren. Uber 70 Kurz- und Langbeitriige wurden zur Begutachtung eingereicht. Diese hohe Zahl zeigt, daB auch nach nunmehr zehn Jahren die "BTW" nichts von ihrer Attraktivitiit verloren hat und nach wie vor als die wichtigste Datenbanktagung im deutschsprachigen Raum gesehen wird. Das Programmkomitee war in der erfreulichen Lage, ein interessantes und qualitativ hochwertiges Tagungsprogramm, bestehend aus 18 Lang- und 8 Kurzbeitriigen, zusammenstellen zu konnen.

This book constitutes the refereed proceedings of the Second International Conference on Web Reasoning and Rule Systems, RR 2008, held in Karlsruhe, Germany in October/November 2008. The 12 revised full papers, 4 revised short papers presented together with 5 poster papers were carefully reviewed and selected from over 35 submissions. The papers address all current topics in Web reasoning and rule systems such as acquisition of rules and ontologies by knowledge extraction, design and analysis of reasoning languages, implemented tools and systems, standardization, ontology usability, ontology languages and their relationships, rules and ontologies, reasoning with uncertainty, reasoning with constraints, rule languages and systems, semantic Web services modeling and applications.

This book constitutes the refereed proceedings of the Second International Conference on Web Reasoning and Rule Systems, RR 2008, held in Karlsruhe, Germany in October/November 2008. The 12 revised full papers, 4 revised short papers presented together with 5 poster papers were carefully reviewed and selected from over 35 submissions. The papers address all current topics in Web reasoning and rule systems such as acquisition of rules and ontologies by knowledge extraction, design and analysis of reasoning languages, implemented tools and systems, standardization, ontology usability, ontology languages and their relationships, rules and ontologies, reasoning with uncertainty, reasoning with constraints, rule languages and systems, semantic Web services modeling and applications.