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  • × year_i:[2000 TO 2010}
  1. Stojanovic, N.: Ontology-based Information Retrieval : methods and tools for cooperative query answering (2005) 0.07 
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    Abstract
    By the explosion of possibilities for a ubiquitous content production, the information overload problem reaches the level of complexity which cannot be managed by traditional modelling approaches anymore. Due to their pure syntactical nature traditional information retrieval approaches did not succeed in treating content itself (i.e. its meaning, and not its representation). This leads to a very low usefulness of the results of a retrieval process for a user's task at hand. In the last ten years ontologies have been emerged from an interesting conceptualisation paradigm to a very promising (semantic) modelling technology, especially in the context of the Semantic Web. From the information retrieval point of view, ontologies enable a machine-understandable form of content description, such that the retrieval process can be driven by the meaning of the content. However, the very ambiguous nature of the retrieval process in which a user, due to the unfamiliarity with the underlying repository and/or query syntax, just approximates his information need in a query, implies a necessity to include the user in the retrieval process more actively in order to close the gap between the meaning of the content and the meaning of a user's query (i.e. his information need). This thesis lays foundation for such an ontology-based interactive retrieval process, in which the retrieval system interacts with a user in order to conceptually interpret the meaning of his query, whereas the underlying domain ontology drives the conceptualisation process. In that way the retrieval process evolves from a query evaluation process into a highly interactive cooperation between a user and the retrieval system, in which the system tries to anticipate the user's information need and to deliver the relevant content proactively. Moreover, the notion of content relevance for a user's query evolves from a content dependent artefact to the multidimensional context-dependent structure, strongly influenced by the user's preferences. This cooperation process is realized as the so-called Librarian Agent Query Refinement Process. In order to clarify the impact of an ontology on the retrieval process (regarding its complexity and quality), a set of methods and tools for different levels of content and query formalisation is developed, ranging from pure ontology-based inferencing to keyword-based querying in which semantics automatically emerges from the results. Our evaluation studies have shown that the possibilities to conceptualize a user's information need in the right manner and to interpret the retrieval results accordingly are key issues for realizing much more meaningful information retrieval systems.
    Content
    Vgl.: http%3A%2F%2Fdigbib.ubka.uni-karlsruhe.de%2Fvolltexte%2Fdocuments%2F1627&ei=tAtYUYrBNoHKtQb3l4GYBw&usg=AFQjCNHeaxKkKU3-u54LWxMNYGXaaDLCGw&sig2=8WykXWQoDKjDSdGtAakH2Q&bvm=bv.44442042,d.Yms.
  2. Makewita, S.M.: Investigating the generic information-seeking function of organisational decision-makers : perspectives on improving organisational information systems (2002) 0.05 
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    Abstract
    The past decade has seen the emergence of a new paradigm in the corporate world where organisations emphasised connectivity as a means of exposing decision-makers to wider resources of information within and outside the organisation. Many organisations followed the initiatives of enhancing infrastructures, manipulating cultural shifts and emphasising managerial commitment for creating pools and networks of knowledge. However, the concept of connectivity is not merely presenting people with the data, but more importantly, to create environments where people can seek information efficiently. This paradigm has therefore caused a shift in the function of information systems in organisations. They have to be now assessed in relation to how they underpin people's information-seeking activities within the context of their organisational environment. This research project used interpretative research methods to investigate the nature of people's information-seeking activities at two culturally contrasting organisations. Outcomes of this research project provide insights into phenomena associated with people's information-seeking function, and show how they depend on the organisational context that is defined partly by information systems. It suggests that information-seeking is not just searching for data. The inefficiencies inherent in both people and their environments can bring opaqueness into people's data, which they need to avoid or eliminate as part of seeking information. This seems to have made information-seeking a two-tier process consisting of a primary process of searching and interpreting data and auxiliary process of avoiding and eliminating opaqueness in data. Based on this view, this research suggests that organisational information systems operate naturally as implicit dual-mechanisms to underpin the above two-tier process, and that improvements to information systems should concern maintaining the balance in these dual-mechanisms.
    Date
    22. 7.2022 12:16:58
  3. Sperling, R.: Anlage von Literaturreferenzen für Onlineressourcen auf einer virtuellen Lernplattform (2004) 0.02 
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    Date
    26.11.2005 18:39:22
  4. Milanesi, C.: Möglichkeiten der Kooperation im Rahmen von Subject Gateways : das Euler-Projekt im Vergleich mit weiteren europäischen Projekten (2001) 0.02 
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    Date
    22. 6.2002 19:41:59
  5. Haller, S.H.M.: Mappingverfahren zur Wissensorganisation (2002) 0.02 
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    Date
    30. 5.2010 16:22:35
  6. Hoffmann, R.: Mailinglisten für den bibliothekarischen Informationsdienst am Beispiel von RABE (2000) 0.01 
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    Date
    22. 2.2000 10:25:05
    Series
    Kölner Arbeitspapiere zur Bibliotheks- und Informationswissenschaft; Bd.22
  7. Thielemann, A.: Sacherschließung für die Kunstgeschichte : Möglichkeiten und Grenzen von DDC 700: The Arts (2007) 0.01 
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    Abstract
    Nach der Veröffentlichung einer deutschen Übersetzung der Dewey Decimal Classification 22 im Oktober 2005 und ihrer Nutzung zur Inhaltserschließung in der Deutschen Nationalbibliographie seit Januar 2006 stellt sich aus Sicht der deutschen kunsthistorischen Spezialbibliotheken die Frage nach einer möglichen Verwendung der DDC und ihrer generellen Eignung zur Inhalterschließung kunsthistorischer Publikationen. Diese Frage wird vor dem Hintergrund der bestehenden bibliothekarischen Strukturen für die Kunstgeschichte sowie mit Blick auf die inhaltlichen Besonderheiten, die Forschungsmethodik und die publizistischen Traditionen dieses Faches erörtert.
  8. Munzner, T.: Interactive visualization of large graphs and networks (2000) 0.01 
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    Abstract
    Many real-world domains can be represented as large node-link graphs: backbone Internet routers connect with 70,000 other hosts, mid-sized Web servers handle between 20,000 and 200,000 hyperlinked documents, and dictionaries contain millions of words defined in terms of each other. Computational manipulation of such large graphs is common, but previous tools for graph visualization have been limited to datasets of a few thousand nodes. Visual depictions of graphs and networks are external representations that exploit human visual processing to reduce the cognitive load of many tasks that require understanding of global or local structure. We assert that the two key advantages of computer-based systems for information visualization over traditional paper-based visual exposition are interactivity and scalability. We also argue that designing visualization software by taking the characteristics of a target user's task domain into account leads to systems that are more effective and scale to larger datasets than previous work. This thesis contains a detailed analysis of three specialized systems for the interactive exploration of large graphs, relating the intended tasks to the spatial layout and visual encoding choices. We present two novel algorithms for specialized layout and drawing that use quite different visual metaphors. The H3 system for visualizing the hyperlink structures of web sites scales to datasets of over 100,000 nodes by using a carefully chosen spanning tree as the layout backbone, 3D hyperbolic geometry for a Focus+Context view, and provides a fluid interactive experience through guaranteed frame rate drawing. The Constellation system features a highly specialized 2D layout intended to spatially encode domain-specific information for computational linguists checking the plausibility of a large semantic network created from dictionaries. The Planet Multicast system for displaying the tunnel topology of the Internet's multicast backbone provides a literal 3D geographic layout of arcs on a globe to help MBone maintainers find misconfigured long-distance tunnels. Each of these three systems provides a very different view of the graph structure, and we evaluate their efficacy for the intended task. We generalize these findings in our analysis of the importance of interactivity and specialization for graph visualization systems that are effective and scalable.
  9. Leyh, M.: ¬Das Google File System (2005) 0.01 
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    Abstract
    Die Bedeutung der Suchmaschine Google hat in den letzten Jahren sehr stark zuge-nommen. Durch die immer komplexer werdenden Googleapplikationen sowie die im-mer stärkere Nutzung der Suchmaschine ist die zu verwaltende Datenmenge in den letzten Jahren stark angewachsen. Dies war die Ursache für die Entwicklung neuer Konzepte, um eine konsistente Datenhaltung und -verwaltung sowie eine schnelle Da-tenrettung zu ermöglichen. Im Mittelpunkt dieser Entwicklung steht die Sicherung der Performance des Systems, das Milliarden von Dokumenten verwaltet und mehrere Tausende Treffer pro Suchanfrage nach Relevanz ordnet. Der Umfang und die Komple-xität des Systems stellen dabei sowohl besondere Herausforderungen an die einzuset-zende Hardware, als auch an die Konzepte der Datenverteilung und -sicherung. Eine neue Entwicklung ist dabei der Verzicht auf teure Spezialhardware. Alle Anwendungen laufen auf gewöhnlicher PC-Hardware und sind somit sehr wirtschaftlich im Vergleich zu teurerer Spezialhardware. Durch den Einsatz gewöhnlicher PC-Hardware sind Aus-fälle von Festplatten oder ganzer Server wesentlich wahrscheinlicher, es wird sogar mit dem Ausfall von Systemen gerechnet. Dass Anwendungen dennoch so zuverlässig und schnell funktionieren, liegt an der Struktur des von Google entwickelten Dateisystems. Das Google File Systems (kurz GFS) bietet eine hohe Fehlertoleranz, Fehler werden automatisch entdeckt und Wiederherstellungen automatisiert ausgeführt, so dass die Nachteile der Hardwarekonfiguration abgefangen werden können. Dieser Fehlertoleranz kommt bei multiplen Clustern mit Größen von bis zu 300 TB sowie mehreren hunderten Clientzugriffen sehr große Bedeutung zu. Eine weitere strukturelle Besonderheit des Google File Systems stellt die Verwaltung von Schreibzugriffen dar. Bestehende Dateien werden nicht durch schwer zu kontrollie-rende Schreiboperationen, sondern vielmehr durch leichter zu verwaltende "Append" Operationen erweitert. Es ist somit möglich, dass viele Nutzer gleichzeitig auf größere Dateien schreibend zugreifen, ohne dass eine ständige Synchronisation zwischen diesen Nutzern stattfinden muss. Die dadurch realisierten Vorteile bezüglich Performance, Verlässlichkeit und Verfüg-barkeit sowie die daraus resultierenden Anforderungen an das System sollen im Mittel-punkt dieser Arbeit stehen. Es soll ein Einblick in die Funktionsweisen und Komplexitä-ten des Google File Systems gegeben und weiterhin die strukturelle Umsetzung der Anforderungen aufgezeigt werden.
  10. Kacmaz, E.: Konzeption und Erstellung eines Online-Nachschlagewerks für den Bereich Web Usability/Accessibility (2004) 0.01 
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    Abstract
    Schrittweise wird der lexikographische Prozeß zur Entstehung eines Online-Nachschlagewerkes dargestellt mit Hilfe eines webbasierten Content Management Systems, dessen anvisierte Benutzer die Studenten des Studienganges Bibliotheks- und Informationsmanagement der Hochschule für Angewandte Wissenschaften Hamburg sein sollen. Selbst verfaßt werden Artikel zu Themen Accessibility und Web-Usability.
  11. Borbach-Jaene, J.: ¬Ein Konzept für die Vermittlung von Informationskompetenz an der UB Marburg : Grundlagen und Umsetzung (2004) 0.01 
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    Abstract
    In der vorliegenden Arbeit wird ein für die Universitätsbibliothek Marburg entwickeltes Konzept zur Verbesserung der Vermittlung von Informationskompetenz vorgestellt. Dabei spielt die Integration von bibliotheksbezogenen Angeboten in Lehrveranstaltungen aber auch die Entwicklung eigenständiger Lehrveranstaltungen im Rahmen des ECTS-Systems eine wichtige Rolle. Diese Veröffentlichung geht zurück auf eine Master-Arbeit im postgradualen Fernstudiengang Master of Arts (Library and Information Science) an der Humboldt-Universität zu Berlin. Online-Version: http://www.ib.hu-berlin.de/~kumlau/handreichungen/h139/.
  12. Dalipi, B.: Dokumenten-Management und Verwendung von Metadaten bei einem Energieversorgungsunternehmen (2008) 0.01 
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    Abstract
    Die vorliegende Arbeit befasst sich im ersten Teil mit den theoretischen Grundlagen, Aufgaben und Funktionen eines Dokumentenmanagement-Systems. In diesem Zusammenhang erklärt werden auch Metadaten, Indexierung, Thesaurus und die bekanntesten Klassifikationssysteme. Erwähnt werden auch das Semantic Web und dessen Technologien. Die Schritte der Realisierung einer SQL-Datenbank, in welcher die Metadaten abgebildet werden, werden in den praktischen Teil der Arbeit näher beschrieben.
  13. Lorenz, S.: Konzeption und prototypische Realisierung einer begriffsbasierten Texterschließung (2006) 0.01 
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    Date
    22. 3.2015 9:17:30
  14. Kirk, J.: Theorising information use : managers and their work (2002) 0.01 
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    Abstract
    The focus of this thesis is information use. Although a key concept in information behaviour, information use has received little attention from information science researchers. Studies of other key concepts such as information need and information seeking are dominant in information behaviour research. Information use is an area of interest to information professionals who rely on research outcomes to shape their practice. There are few empirical studies of how people actually use information that might guide and refine the development of information systems, products and services.
  15. Slavic-Overfield, A.: Classification management and use in a networked environment : the case of the Universal Decimal Classification (2005) 0.01 
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    Abstract
    In the Internet information space, advanced information retrieval (IR) methods and automatic text processing are used in conjunction with traditional knowledge organization systems (KOS). New information technology provides a platform for better KOS publishing, exploitation and sharing both for human and machine use. Networked KOS services are now being planned and developed as powerful tools for resource discovery. They will enable automatic contextualisation, interpretation and query matching to different indexing languages. The Semantic Web promises to be an environment in which the quality of semantic relationships in bibliographic classification systems can be fully exploited. Their use in the networked environment is, however, limited by the fact that they are not prepared or made available for advanced machine processing. The UDC was chosen for this research because of its widespread use and its long-term presence in online information retrieval systems. It was also the first system to be used for the automatic classification of Internet resources, and the first to be made available as a classification tool on the Web. The objective of this research is to establish the advantages of using UDC for information retrieval in a networked environment, to highlight the problems of automation and classification exchange, and to offer possible solutions. The first research question was is there enough evidence of the use of classification on the Internet to justify further development with this particular environment in mind? The second question is what are the automation requirements for the full exploitation of UDC and its exchange? The third question is which areas are in need of improvement and what specific recommendations can be made for implementing the UDC in a networked environment? A summary of changes required in the management and development of the UDC to facilitate its full adaptation for future use is drawn from this analysis.
  16. Buß, M.: Unternehmenssprache in internationalen Unternehmen : Probleme des Informationstransfers in der internen Kommunikation (2005) 0.01 
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    Date
    22. 5.2005 18:25:26
  17. Düring, M.: ¬Die Dewey Decimal Classification : Entstehung, Aufbau und Ausblick auf eine Nutzung in deutschen Bibliotheken (2003) 0.01 
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    Abstract
    Die ständig steigende Zahl an publizierter Information in immer neuen Formen verlangt besonders von Informations- und Dokumentationseinrichtungen immer präzisere Lösungen zur Erschließung dieser Informationen und ihrer benutzerfreundlichen Aufbereitung. Besonders im derzeitigen Zeitalter der Datenbanken und Online-Kataloge ist die Kombination von verbaler und klassifikatorischer Sacherschließung gefordert, ohne dabei die Verbindung zu den älteren, vielerorts noch (zumindest zusätzlich) in Verwendung befindlichen, Zettelkatalogen zu verlieren. Weltweit ist eine Vielzahl an verschiedenen Klassifikationen im Einsatz. Die Wahl der für eine Einrichtung passenden Klassifikation ist abhängig von ihrer thematischen und informationellen Ausrichtung, der Größe und Art der Bestände und nicht zuletzt von technischen und personellen Voraussetzungen. Auf Seiten der zu wählenden Klassifikation sind die Einfachheit der Handhabung für den Bibliothekar, die Verständlichkeit für den Benutzer, die Erweiterungsfähigkeit der Klassifikation durch das Aufkommen neuer Wissensgebiete und die Einbindung in informationelle Netze mit anderen Einrichtungen von entscheidender Bedeutung. In dieser Arbeit soll die Dewey Dezimalklassifikation (DDC) hinsichtlich dieser Punkte näher beleuchtet werden. Sie ist die weltweit am häufigsten benutzte Klassifikation. Etwa 200.000 Bibliotheken in 135 Ländern erschließen ihre Bestände mit diesem System. Sie liegt derzeit bereits in der 22. ungekürzten Auflage vor und wurde bisher in 30 Sprachen übersetzt. Eine deutsche Komplettübersetzung wird im Jahre 2005 erscheinen. Trotz teils heftig geführter Standardisierungsdebatten und Plänen für die Übernahme von amerikanischen Formalerschließungsregeln herrscht in Bezug auf die Sacherschließung unter deutschen Bibliotheken wenig Einigkeit. Die DDC ist in Deutschland und anderen europäischen Ländern kaum verbreitet, sieht von Großbritannien und von der Verwendung in Bibliografien ab. Diese Arbeit geht demzufolge auf die historischen Gründe dieser Entwicklung ein und wagt einen kurzen Ausblick in die Zukunft der Dezimalklassifikation.
  18. Westermeyer, D.: Adaptive Techniken zur Informationsgewinnung : der Webcrawler InfoSpiders (2005) 0.01 
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    Pages
    22 S
  19. Lehrke, C.: Architektur von Suchmaschinen : Googles Architektur, insb. Crawler und Indizierer (2005) 0.01 
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  20. Müller, T.: Wissensrepräsentation mit semantischen Netzen im Bereich Luftfahrt (2006) 0.01 
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    Date
    26. 9.2006 21:00:22

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