Search (94 results, page 1 of 5)

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Abstract

Authority files have played an important role in improving the quality of indexing and subject cataloging. Although authorities can significantly improve search by increasing the number of access points, they are rarely an integral part of the information retrieval process, particularly end-users searches. A retrieval prototype, searchFAST, was developed to test the feasibility of using an authority file as an index to bibliographic records. searchFAST uses FAST (Faceted Application of Subject Terminology) as an index to OCLC's WorldCat.org bibliographic database. The searchFAST methodology complements, rather than replaces, existing WorldCat.org access. The bibliographic file is searched indirectly; first the authority file is searched to identify appropriate subject headings, then the headings are used to retrieve the matching bibliographic records. The prototype demonstrates the effectiveness and practicality of using an authority file as an index. Searching the authority file leverages authority control work by increasing the number of access points while supporting a simple interface designed for end-users.

Theme

Verbale Doksprachen im Online-Retrieval

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Theme

Klassifikationssysteme im Online-Retrieval

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Theme

Klassifikationssysteme im Online-Retrieval
Semantisches Umfeld in Indexierung u. Retrieval

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Source

http://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&ved=0CDQQFjAE&url=http%3A%2F%2Fdigbib.ubka.uni-karlsruhe.de%2Fvolltexte%2Fdocuments%2F3131107&ei=HzFWVYvGMsiNsgGTyoFI&usg=AFQjCNE2FHUeR9oQTQlNC4TPedv4Mo3DaQ&sig2=Rlzpr7a3BLZZkqZCXXN_IA&bvm=bv.93564037,d.bGg&cad=rja

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Abstract

In January 2010, the German National Library discontinued the print version of the national bibliography and replaced it with an online journal. This was the first step in a longer process of redefining the National Library's bibliographic services, leaving the field of traditional media - e. g. paper or CD-ROM databases - and focusing on publishing its data over the WWW. A new business model was set up - all web resources are now published in an extra bibliography series and the bibliographic data are freely available. Step by step the prices of the other bibliographic data will be also reduced. In the second stage of the project, the focus is on value-added services based on the National Library's catalogue. The main purpose is to introduce alerting services based on the user's search criteria offering different access methods such as RSS feeds, integration with e. g. Zotero, or export of the bibliographic data as a CSV or PDF file. Current standards of cataloguing remain a guide line to offer high-value end-user retrieval but they will be supplemented by automated indexing procedures to find & browse the growing number of documents. A transparent cataloguing policy and wellarranged selection menus are aimed.

Content

Vortrag im Rahmen der Session 93. Cataloguing der WORLD LIBRARY AND INFORMATION CONGRESS: 76TH IFLA GENERAL CONFERENCE AND ASSEMBLY, 10-15 August 2010, Gothenburg, Sweden - 91. Bibliography.

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Theme

Verbale Doksprachen im Online-Retrieval

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Abstract

We present a short survey of the literature on indexing and retrieval of mathematical knowledge, with pointers to 72 papers and tentative taxonomies of both retrieval problems and recurring techniques.

Date

22. 2.2017 12:51:57

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Abstract

The design and architecture of MIaS (Math Indexer and Searcher), a system for mathematics retrieval is presented, and design decisions are discussed. We argue for an approach based on Presentation MathML using a similarity of math subformulae. The system was implemented as a math-aware search engine based on the state-ofthe-art system Apache Lucene. Scalability issues were checked against more than 400,000 arXiv documents with 158 million mathematical formulae. Almost three billion MathML subformulae were indexed using a Solr-compatible Lucene.

Content

Vgl.: DocEng2011, September 19-22, 2011, Mountain View, California, USA Copyright 2011 ACM 978-1-4503-0863-2/11/09

Date

22. 2.2017 13:00:42

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Abstract

The ever-growing amount of content and knowledge published online makes it possible for libraries to complement their own data and to present their collections in novel ways. Conceptually related information can be semantically linked so that users may benefit from richer data collections and novel search possibilities that capitalize on the inherent relationships between media, local metadata and external information sources. This paper presents potential solutions for the fundamental challenges of integrating heterogeneous data sources and providing innovative semantic search approaches, as they are developed for libraries and multimedia archives within the CONTENTUS project.

Content

Vortrag im Rahmen der Session 93. Cataloguing der WORLD LIBRARY AND INFORMATION CONGRESS: 76TH IFLA GENERAL CONFERENCE AND ASSEMBLY, 10-15 August 2010, Gothenburg, Sweden - 149. Information Technology, Cataloguing, Classification and Indexing with Knowledge Management

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Abstract

Two new methods for retrieving mathematical expressions using conventional keyword search and expression images are presented. An expression-level TF-IDF (term frequency-inverse document frequency) approach is used for keyword search, where queries and indexed expressions are represented by keywords taken from LATEX strings. TF-IDF is computed at the level of individual expressions rather than documents to increase the precision of matching. The second retrieval technique is a form of Content-Base Image Retrieval (CBIR). Expressions are segmented into connected components, and then components in the query expression and each expression in the collection are matched using contour and density features, aspect ratios, and relative positions. In an experiment using ten randomly sampled queries from a corpus of over 22,000 expressions, precision-at-k (k= 20) for the keyword-based approach was higher (keyword: µ= 84.0,s= 19.0, image-based:µ= 32.0,s= 30.7), but for a few of the queries better results were obtained using a combination of the two techniques.

Date

22. 2.2017 12:53:49

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Abstract

Am 8. August 2017 ist das neue Release des RDA Toolkits<http://www.rdatoolkit.org/august2017release> erschienen. Mit diesem Release ist die deutsche Übersetzung auf demselben Stand wie die englische Originalausgabe vom April 2017. Alle Änderungen aus dem Proposalverfahren 2016 und auch aus den Fast Tracks (für kleinere Änderungen) sind eingearbeitet und übersetzt. Ebenfalls aktualisiert wurden Glossar und RDA Registry<http://www.rdaregistry.info/>. Die deutsche Übersetzung ist im Zeitplan des 3R-Projekts (RDA Toolkit Restructure and Redesign Projekt). Alle anderen Übersetzungen des RDA Toolkits werden später im Jahr folgen. Die Änderungsdokumentation für das August-Release des RDA Toolkit finden Sie im RDA-Info-Wiki<https://wiki.dnb.de/x/3xLSBg>. Aktualisiert wurden auch die von der Fachgruppe Erschließung (FG E) kooperativ erarbeiteten Anwendungsrichtlinien für den deutschsprachigen Raum (D-A-CH). Diese sind auch in Französisch abrufbar. Eine Gesamtübersicht der D-A-CH AWR pro Kapitel ist im RDA Toolkit unter dem Reiter "Ressourcen". Die Änderungsdokumentation der D-A-CH AWR finden Sie ebenfalls im RDA-Info-Wiki.<https://wiki.dnb.de/x/1hLSBg>. [Inetbib vom 09.08.2017].

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Abstract

Aufgrund der so großen Bedeutung von Privatheit im Internet hat acatech, die Deutsche Akademie der Technikwissenschaften, 2011 ein Projekt initiiert, das sich mit dem Privatheitsparadoxon wissenschaftlich auseinandersetzt. In dem Projekt werden Empfehlungen entwickelt, wie sich eine Kultur der Privatheit und des Vertrauens im Internet etablieren lässt, die es ermöglicht, das Paradoxon aufzulösen. Wir verwenden hier den Begriff der Privatheit. Er deutet an, dass hier nicht nur der räumliche Begriff Privatsphäre gemeint ist, sondern auch das im europäischen Kontext wichtige Konzept der informationellen Selbstbestimmung einbezogen ist. Dieser Band legt die Ergebnisse der ersten Projektphase vor: eine Bestandsaufnahme von Privatheit im Internet aus verschiedenen Blickwinkeln. Kapitel 1 stellt die Wünsche und Befürchtungen von Internetnutzern und Gesellschaft im Hinblick auf ihre Privatheit vor. Sie wurden mithilfe sozialwissenschaftlicher Methoden untersucht. Ergänzend dazu untersucht das zweite Kapitel Privatheit im Cyberspace aus ethischer Perspektive. Das dritte Kapitel widmet sich ökonomischen Aspekten: Da viele Onlinedienstleistungen mit Nutzerdaten bezahlt werden, ergibt sich die Frage, was dies sowohl für den Nutzer und Kunden als auch für die Unternehmen bedeutet. Kapitel 4 hat einen technologischen Fokus und analysiert, wie Privatheit von Internettechnologien bedroht wird und welche technischen Möglichkeiten es gibt, um die Privatheit des Nutzers zu schützen. Selbstverständlich ist der Schutz von Privatheit im Internet nicht nur ein technisches Problem. Deshalb untersucht Kapitel 5 Privatheit aus rechtlicher Sicht. Bei der Lektüre der fünf Kapitel wird dem Leser sofort die Komplexität der Frage von Privatheit im Internet (Internet Privacy) bewusst. Daraus folgt die unbedingte Notwendigkeit eines interdisziplinären Ansatzes. In diesem Sinne wird die interdisziplinäre Projektgruppe gemeinsam Optionen und Empfehlungen für einen Umgang mit Privatheit im Internet entwickeln, die eine Kultur der Privatheit und des Vertrauens im Internet fördern. Diese Optionen und Empfehlungen werden 2013 als zweiter Band dieser Studie veröffentlicht.

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Abstract

Am 10. Oktober 2017 ist das neue Release des RDA Toolkits erschienen. Aufgrund des 3R-Projekts (RDA Toolkit Restruction and Redesign Project) gab es keine inhaltlichen Änderungen am Regelwerkstext. Es wurden ausschließlich Änderungen an den D-A-CH vorgenommen, die in der Änderungsdokumentation im RDA-Info-Wiki<https://wiki.dnb.de/x/1hLSBg> aufgelistet sind. Die Gesamtübersicht der D-A-CH nach Kapiteln finden Sie im RDA Toolkit unter dem Reiter "Ressourcen". Wir möchten daran erinnern, dass für die Anwendung von RDA im deutschsprachigen Raum jeweils der deutsche Text maßgeblich ist. Im Juni 2018 wird das RDA Toolkit einen Relaunch erfahren und mit einer neuen Oberfläche erscheinen. Dieser beinhaltet ein Redesign der Toolkit-Oberfläche und die inhaltliche Anpassung des Standards RDA an das Library Reference Model (IFLA LRM) sowie die künftige stärkere Ausrichtung auf die aktuellen technischen Möglichkeiten durch den sogenannten 4-Fold-Path. Zunächst wird im Juni 2018 die englische Originalausgabe der RDA in der neuen Form erscheinen. Alle Übersetzungen werden in einer Übergangszeit angepasst. Hierfür wird die alte Version des RDA Toolkit für ein weiteres Jahr zur Verfügung gestellt. Der Stand Oktober 2017 der deutschen Ausgabe und die D-A-CH-Anwendungsrichtlinien bleiben bis zur Anpassung eingefroren. Im geplanten Dezember-Release des RDA Toolkit wird es keine Änderungen für die deutsche Ausgabe und die D-A-CH-Anwendungsrichtlinien geben. [Inetbib vom 11.10.2017]

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Abstract

Am 14. Februar 2017 ist das neue Release des RDA Toolkits<http://www.rdatoolkit.org/development/February2017release> erschienen. Das Release enthält im englischen Text alle Änderungen aus dem Fast-Track-Verfahren RSC/Sec/6<http://www.rda-rsc.org/sites/all/files/RSC-Sec-6.pdf>. Ebenso enthalten sind die Updates der LC-PCC PS (Library of Congress-Program for Cooperative Cataloging Policy Statements) und der MLA Best Practices. Neu aufgenommen wurden die Policy Statements der Library and Archives Canada in Kooperation mit der Bibliothèque et Archives nationales du Québec. Diese sind sowohl im Register als auch im Text über ein Icon (dunkel violett) mit den Buchstaben LAC/BAC-BAnQ ansteuerbar. Ab sofort ist es möglich sich auch die Policy Statements in einer zweisprachigen Ansicht anzeigen zu lassen, dazu wurde die Funktion Select Language und Dual View in der Symbolliste unter dem Reiter "Ressourcen" eingefügt. Im deutschen Text wurden ausschließlich Änderungen an den Anwendungsrichtlinien für den deutschsprachigen Raum (D-A-CH) eingearbeitet. Die dazugehörige Übersicht (Kurz- bzw. Langversion) finden Sie im RDA-Info-Wiki<https://wiki.dnb.de/x/1hLSBg>. Mitte April 2017 wird das nächste Release des RDA Toolkit erscheinen, eingearbeitet werden die verabschiedeten Proposals, die im November 2016 vom RDA Steering Committee (RSC) beschlossen wurden. Die Umsetzung der Änderungen in der deutschen Übersetzung aus den Fast-Track-Dokumenten RSC/Sec/4 und RSC/Sec/5 und RSC/Sec/6 sind für den August 2017 geplant.

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Abstract

This is an edited collection of 39 original papers and as many commentaries and replies. The target papers and replies were written by senior members of the MIND Group, while all commentaries were written by junior group members. All papers and commentaries have undergone a rigorous process of anonymous peer review, during which the junior members of the MIND Group acted as reviewers. The final versions of all the target articles, commentaries and replies have undergone additional editorial review. Besides offering a cross-section of ongoing, cutting-edge research in philosophy and cognitive science, this collection is also intended to be a free electronic resource for teaching. It therefore also contains a selection of online supporting materials, pointers to video and audio files and to additional free material supplied by the 92 authors represented in this volume. We will add more multimedia material, a searchable literature database, and tools to work with the online version in the future. All contributions to this collection are strictly open access. They can be downloaded, printed, and reproduced by anyone.

Content

Vgl. den Artikel: Lenzen, M.: Vor der Quadratwurzel steht die Quadratzahl. In: http://www.faz.net/aktuell/feuilleton/forschung-und-lehre/uni-mainz-stellt-publikationen-von-hirnforschern-online-13379697.html.

Date

27. 1.2015 11:48:22

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Abstract

Current retrieval and recommendation approaches rely on hard-wired data models. This hinders personalized cus-tomizations to meet information needs of users in a more flexible manner. Therefore, the paper investigates how similarity-basedretrieval strategies can be combined with graph queries to enable users or system providers to explore repositories in the LinkedOpen Data (LOD) cloud more thoroughly. For this purpose, we developed novel content-based recommendation approaches.They rely on concept annotations of Simple Knowledge Organization System (SKOS) vocabularies and a SPARQL-based querylanguage that facilitates advanced and personalized requests for openly available knowledge graphs. We have comprehensivelyevaluated the novel search strategies in several test cases and example application domains (i.e., travel search and multimediaretrieval). The results of the web-based online experiments showed that our approaches increase the recall and diversity of rec-ommendations or at least provide a competitive alternative strategy of resource access when conventional methods do not providehelpful suggestions. The findings may be of use for Linked Data-enabled recommender systems (LDRS) as well as for semanticsearch engines that can consume LOD resources. (PDF) Similarity-based knowledge graph queries for recommendation retrieval. Available from: https://www.researchgate.net/publication/333358714_Similarity-based_knowledge_graph_queries_for_recommendation_retrieval [accessed May 21 2020].

Content

Vgl.: https://www.researchgate.net/publication/333358714_Similarity-based_knowledge_graph_queries_for_recommendation_retrieval. Vgl. auch: http://semantic-web-journal.net/content/similarity-based-knowledge-graph-queries-recommendation-retrieval-1.

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Abstract

Am 12. Dezember 2017 ist das neue Release des RDA Toolkits erschienen. Dabei gab es, aufgrund des 3R-Projekts (RDA Toolkit Restruction and Redesign Project), keine inhaltlichen Änderungen am RDA-Text. Es wurden ausschließlich die Übersetzungen in finnischer und französischer Sprache, ebenso wie die dazugehörigen Policy statements, aktualisiert. Für den deutschsprachigen Raum wurden in der Übersetzung zwei Beziehungskennzeichnungen geändert: Im Anhang I.2.2 wurde die Änderung von "Sponsor" zu "Träger" wieder rückgängig gemacht. In Anhang K.2.3 wurde "Sponsor" zu "Person als Sponsor" geändert. Außerdem wurde die Übersetzung der Anwendungsrichtlinien (D-A-CH AWR) ins Französische aktualisiert. Dies ist das vorletzte Release vor dem Rollout des neuen Toolkits. Das letzte Release im Januar/Februar 2018 wird die norwegische Übersetzung enthalten. Im Juni 2018 wird das RDA Toolkit ein Relaunch erfahren und mit einer neuen Oberfläche erscheinen. Dieser beinhaltet ein Redesign der Toolkit-Oberfläche und die inhaltliche Anpassung des Standards RDA an das Library Reference Model (IFLA LRM) sowie die künftige stärkere Ausrichtung auf die aktuellen technischen Möglichkeiten. Zunächst wird im Juni 2018 die englische Originalausgabe der RDA in der neuen Form erscheinen. Alle Übersetzungen werden in einer Übergangszeit angepasst. Hierfür wird die alte Version des RDA Toolkit für ein weiteres Jahr zur Verfügung gestellt. Der Stand Dezember 2017 der deutschen Ausgabe und die D-A-CH-Anwendungsrichtlinien bleiben bis zur Anpassung eingefroren. Nähere Information zum Rollout finden Sie unter dem folgenden Link<http://www.rdatoolkit.org/3Rproject/SR3>. [Inetbib vom 13.12.2017]
"das RDA Steering Committee (RSC) hat eine Verlautbarung<http://www.rda-rsc.org/sites/all/files/RSC-Chair-19.pdf> zum 3R Project und dem Release des neuen RDA Toolkits am 13. Juni 2018 herausgegeben. Außerdem wurde ein neuer Post zum Projekt auf dem RDA Toolkit Blog veröffentlicht "What to Expect from the RDA Toolkit beta site"<http://www.rdatoolkit.org/3Rproject/Beta>. Die deutsche Übersetzung folgt in Kürze auf dem RDA-Info-Wiki<https://wiki.dnb.de/display/RDAINFO/RDA-Info>. Für den deutschsprachigen Raum wird das Thema im Rahmen des Deutschen Bibliothekartags in Berlin im Treffpunkt Standardisierung am Freitag, den 15. Juni aufgegriffen. Die durch das 3R Project entstandenen Anpassungsarbeiten für den DACH-Raum werden im Rahmen eines 3R-DACH-Projekts<https://wiki.dnb.de/x/v5jpBw> in den Fachgruppen des Standardisierungsausschusses durchgeführt. Für die praktische Arbeit ändert sich bis zur Durchführung von Anpassungsschulungen nichts. Basis für die Erschließung bleibt bis dahin die aktuelle Version des RDA Toolkits in deutscher Sprache." [Mail R. Behrens an Inetbib vom 11.06.2018].

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Abstract

Pünktlich zum 15. Geburtstag der Google Suche verkündete Google gestern auf einer Pressekonferenz in der "Gründungs-Garage", dass das bedeutendste Google Update seit dem Caffeine Update im Jahr 2010 und größte Algorithmus-Update seit 2001 schon seit ca. einem Monat aktiv ist. Das aktuelle Update heißt Hummingbird zu deutsch Kollibri. Es soll ca. 90% aller Suchanfragen betreffen und soll im Vergleich zu Caffeine ein echtes Algorithmus-Update sein. Es soll dabei helfen komplexere Suchanfragen besser zu deuten und noch besser die eigentliche Suchintention bzw. Fragestellung hinter einer Suchanfrage zu erkennen sowie passende Dokumente dazu anzubieten. Auch auf Dokumentenebene soll die eigentliche Intention hinter dem Content besser mit der Suchanfrage gematcht werden.

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Abstract

The compilation of terminological vocabularies plays a central role in the organization and retrieval of scientific texts. Both simple keyword lists as well as sophisticated modellings of relationships between terminological concepts can make a most valuable contribution to the analysis, classification, and finding of appropriate digital documents, either on the Web or within local repositories. This seems especially true for long-established scientific fields with various theoretical and historical branches, such as linguistics, where the use of terminology within documents from different origins is sometimes far from being consistent. In this short paper, we report on the early stages of a project that aims at the re-design of an existing domain-specific KOS for grammatical content grammis. In particular, we deal with the terminological part of grammis and present the state-of-the-art of this online resource as well as the key re-design principles. Further, we propose questions regarding ramifications of the Linked Open Data and Semantic Web approaches for our re-design decisions.

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Abstract

Im vorliegenden Beitrag wird zum einen erläutert, wie die Pfingstbewegung in den neun gedruckten Ausgaben der Dewey-Dezimalklassifikation, die diesen Begriff im Register aufführen, jeweils behandelt wird - beginnend mit der 15. Auflage von 1951 bis zur jüngsten, der 23. Auflage von 2011. Es werden Probleme mit der Charakterisierung der Pfingstbewegung herausgearbeitet - insbesondere, dass sie als ein Amerika-zentriertes und rassisch homogenes Phänomen dargestellt wird. Dies verhindert eine soziohistorisch akkurate Repräsentation der Pfingstbewegung als einer geografisch und rassisch vielfältigen religiösen Tradition innerhalb von Bibliotheksbeständen, die nach der weltweit am meisten verbreiteten Klassifikation organisiert sind. Zum anderen werden Empfehlungen zur Reklassifikation der Pfingstbewegung in der Dewey-Dezimalklassifikation gegeben, die zu einer korrekteren soziohistorischen Repräsentation beitragen und dadurch auch den Zugang zur großen Bandbreite von Literatur über diese globale und diverse religiöse Tradition verbessern würden.