-
Rudolph, S.; Hemmje, M.: Visualisierung von Thesauri zur interaktiven Unterstüzung von visuellen Anfragen an Textdatenbanken (1994)
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- Abstract
- In der folgenden Studie wird eine Komponente für eine visuelle Benutzerschnittstelle zu Textdatenbanken entworfen. Mit Hilfe einer Terminologievisualisierung wird dem Benutzer eine Hilfestellung bei der Relevanzbewertung von Dokumenten und bei der Erweiterung seiner visuellen Anfrage an das Retrieval-System gegeben. Dazu werden zuerst die grundlegenden Information-Retrieval-Modelle eingehender vorgestellt, d.h., generelle Retrieval-Modelle, Retrievaloperationen und spezielle Retrieval-Modelle wie Text-Retrieval werden erläutert. Die Funktionalität eines Text-Retrieval-Systems wird vorgestellt. Darüber hinaus werden bereits existierende Implementierungen visueller Information-Retrieval-Benutzerschnittstellen vorgestellt. Im weiteren Verlauf der Arbeit werden mögliche Visualisierungen der mit Hilfe eines Text-Retrieval-Systems gefundenen Dokumente aufgezeigt. Es werden mehrere Vorschläge zur Visualisierung von Thesauri diskutiert. Es wird gezeigt, wie neuronale Netze zur Kartierung eines Eingabebereiches benutzt werden können. Klassifikationsebenen einer objekt-orientierten Annäherung eines Information-Retrieval-Systems werden vorgestellt. In diesem Zusammenhang werden auch die Eigenschaften von Thesauri sowie die Architektur und Funktion eines Parsersystems erläutert. Mit diesen Voraussetzung wird die Implementierung einer visuellen Terminologierunterstützung realisiert. Abschließend wird ein Fazit zur vorgestellten Realisierung basierend auf einem Drei-Schichten-Modell von [Agosti et al. 1990] gezogen.
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Schardt-Sahelijo, L.P.; Pastowsky, M.: ¬Der iARD-Marktreport : optoelektronische Systeme für Imageverarbeitung, Archivierung, Information Retrieval, Dokumenten-Management (1994)
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-
Efthimiadis, E.N.: Approaches to search formulation and query expansion in information systems : DRS, DBMS, ES (1992)
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- Abstract
- Discusses the ways in which systems and/or users formulate and reformulate searches in documents retrieval systems (DRS), database management systems (DBMS) and expert systems (ES). Concludes that query formulation and reformulation has been neglected in these fields
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
-
Riva, P.; Boeuf, P. le; Zumer, M.: IFLA Library Reference Model : a conceptual model for bibliographic information (2017)
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- Issue
- Revised after world-wide review. Endorsed by the IFLA Professional Committe.
-
Bide, M.: In search of the Unicorn : The Digital Object Identifier from a user perspective (1997)
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- Abstract
- Reports results of a study, prompted by a number of questions which have been raised about the extent to which the DOI meets, or can be developed to meet, the real requirements of the marketplace for a unique identifier of digital content. Develops a series of scenarios to explore future ways in which digital information may be accessed and used and considers the role of unique identification of content in each of them. The business models, selected for the scenarios, must represent to some extent a subjective forecast of what the future might look like. Their purpose is to attempt to illuminate some generic aspects of unique identification that appear likely to be important in future
- Form
- Elektronische Dokumente
-
Calhoun, K.: ¬The changing nature of the catalog and its integration with other discovery tools : Prepared for the Library of Congress (2006)
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- Abstract
- The destabilizing influences of the Web, widespread ownership of personal computers, and rising computer literacy have created an era of discontinuous change in research libraries a time when the cumulated assets of the past do not guarantee future success. The library catalog is such an asset. Today, a large and growing number of students and scholars routinely bypass library catalogs in favor of other discovery tools, and the catalog represents a shrinking proportion of the universe of scholarly information. The catalog is in decline, its processes and structures are unsustainable, and change needs to be swift. At the same time, books and serials are not dead, and they are not yet digital. Notwithstanding widespread expansion of digitization projects, ubiquitous e-journals, and a market that seems poised to move to e-books, the role of catalog records in discovery and retrieval of the world's library collections seems likely to continue for at least a couple of decades and probably longer. This report, commissioned by the Library of Congress (LC), offers an analysis of the current situation, options for revitalizing research library catalogs, a feasibility assessment, a vision for change, and a blueprint for action. Library decision makers are the primary audience for this report, whose aim is to elicit support, dialogue, collaboration, and movement toward solutions. Readers from the business community, particularly those that directly serve libraries, may find the report helpful for defining research and development efforts. The same is true for readers from membership organizations such as OCLC Online Computer Library Center, the Research Libraries Group, the Association for Research Libraries, the Council on Library and Information Resources, the Coalition for Networked Information, and the Digital Library Federation. Library managers and practitioners from all functional groups are likely to take an interest in the interview findings and in specific actions laid out in the blueprint.
-
ELINOR : Electronic Library Project (1998)
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- Abstract
- Describes the final phase of the work on the ELINOR (Electronic Library INformation Online Retrieval) project at De Montfort University, Leicester, which concluded in 1996. ELINOR was 2 phase project with 3 overall goals: to create a practical pilot system based on a commercial product (Excalibur EFS); to investigate the expansion of a small scale electronic library to a larger, distributed library system; and to develop a more efficient and effective means of accessing and sharing resources within a networked multi campus institution. ELINOR was successful in demonstrating that libraries may conveniently digitize and supply smal collections of high demand materials over a campus network in text anf TIFF format. Operational conditions have so far indicated that the barriers are not technological but involve copyright, use issues and sustainability
- Series
- British Library Research and Innovation Centre (BLRIC) report; 22
-
Siemer, J.A.: ¬An information retrieval expert system prototype for agricultural literature reference database-description and evaluation (1994)
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-
Siemer, J.A.: ¬A conceptual model for an information retrieval expert system prototype for agricultural bibliographic literature databases (1994)
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-
Siemer, J.A.: ¬A functional model for an information retrieval expert system for agricultural literature reference databases (1994)
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-
Siemer, J.A.: ¬The knowledge for a detailed conceptual model for an information retrieval expert system (1994)
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-
Doyle, L.B.: Indexing and abstracting by association : Part 1 (1962)
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- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.25-38
-
Robertson, A.M.; Willett, P.: Use of genetic algorithms in information retrieval (1995)
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- Abstract
- Reviews the basic techniques involving genetic algorithms and their application to 2 problems in information retrieval: the generation of equifrequent groups of index terms; and the identification of optimal query and term weights. The algorithm developed for the generation of equifrequent groupings proved to be effective in operation, achieving results comparable with those obtained using a good deterministic algorithm. The algorithm developed for the identification of optimal query and term weighting involves fitness function that is based on full relevance information
-
Külper, U.; Will, G.: ¬Das Projekt Bücherschatz : interdisziplinäre und partizipative Entwicklung eines kindgerechten Bibliotheks-Online-Kataloges (1996)
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- Abstract
- Im Jahr 1995 entstand in interdisziplinärer Zusammenarbeit der Prototyp Bücherschatz, ein Bibliotheks-Online_katalog für Kinder. Beteiligt waren Studierende und eine Professorin der FH Hamburg, Fb Bibliothek und Information, ein Designer und 2 Informatikerinnen der Universität Hamburg. In diesem Bericht werden sowohl das Produkt Bücherschatz als auch der Prozeß seiner Entwicklung beschrieben. Ein Schwerpunkt liegt in der Auseinandersetzung mit theoretischen Modellen der Softwaretechnik - hier STEPS und Prototyping - und ihrer Anpassung an konkrete Projekterfordernisse. Weiterhin werden Fragen nach der Gestaltung kindgerechter Software, der Organisation eines großen Projektteams und nach der Art der Partizipation der Benutzer thematisiert. Das Gesamtprojekt wird in einen wissenschaftlichen Kontext der Informatik eingeordnet, und zentrale Erfahrungen und Erkenntnisse hinsichtlich interdisziplinärer und partizipativer Softwareentwicklung werden zusammengefaßt
-
Artificial neural networks for information retrieval in a libraries context (1995)
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- Footnote
- Rez. in: Journal of librarianship and information science 30(1998) no.2, S.143-145 (T. Wilson)
-
Andelfinger, U.; Rock, T.: Einrichtung eines TOSCANA-Erkundungssystems für die ZIT-Bibliothek : Zwischenstand (1994)
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Floeting, H.; Gaevert, S.; Balfidan, B.; Nigdeli, A.; Riedmann, E.: Städte im Netz : Elektronische Bürger-, Stadt- und Wirtschaftsinformationssysteme der Kommunen. Ergebnisse einer Difu-Städteumfrage (1997)
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Perkins, C.; Guest, P.: Operationalizing a sheet based cartographic information retrieval system (1993)
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-
Keen, E.M.: Interactive ranked retrieval (1995)
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- Abstract
- Reports the design, building and testing of the Interactive Ranked Output Search Engine (IROSE), which includes as the main features: query reformulation, ranked output match options, field bias options, marking of must, minus, and truncated suppressed terms. Both DOS and Windows versions of IROSE were constructed and laboratory search tests were performed using 3 test collections of records with queries and relevance jedgements in the subject area of cystic fibrosis, library and information and current affairs. Concludes that there is substantial evidence of the quality of this approach to information retrieval and future tests are needed to redefine and improve the optionality and move to semi operational testing
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Gödert, W.; Hartmann, S.; Hubrich, J.; Lepsky, K.; Schulenborg, K.; Trunk, D.: Semantische Anreicherung der Schlagwortnormdatei : Ergebnisbericht (2004)
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- Abstract
- Die Schlagwortnormdatei (SWD) ist mit einem Umfang von ca. 150.000 Sachschlagwörtern das umfangreichste terminologisch kontrollierte deutschsprachige Vokabular, das zur verbalen Inhaltserschließung von Dokumenten genutzt werden und somit prinzipiell auch als Kandidat für den Aufbau semantischer Navigationsstrukturen im Online-Retrieval angesehen werden kann. Die Strukturierung der Schlagwörter in der SWD folgt den Vorgaben zur Ausweisung begrifflicher Strukturen in einem Thesaurus. Durch Veränderungen des der Erstellung der SWD zu Grunde liegenden Regelwerkes RSWK hat sich im Verlauf der Zeit ein Nebeneinander von unterschiedlich dichten Beziehungsnetzen ergeben, ohne dass hierzu bislang Details erhoben und dokumentiert wären. In dieser Studie werden Aussagen über den Aufwand gemacht, der erforderlich wäre, die semantische Relationenstruktur der Schlagwortnormdatei (SWD) zu homogenisieren. Hierzu wird eine quantitative und qualitative Analyse am Beispiel mehrerer Themengebiete vorgenommen. Die Berücksichtigung mehrerer Gebiete soll es gestatten, möglichst repräsentative Aussagen für das gesamte Vokabular abzuleiten. Die Autorinnen und Autoren der Studien sind sich angesichts der zur Verfügung stehenden begrenzten Ressourcen bewusst, dass dieser Anspruch nur mit Einschränkungen eingelöst werden kann. Die für die Analyse der Relationenstruktur benutzten Kriterien orientieren sich an Grundsätzen zur Gestaltung strukturierten Vokabulars sowie insbesondere der Eignung der SWD, zum Aufbau bestandsunabhängiger semantischer Navigationssysteme im Online-Retrieval, für Zwecke des wörterbuchgestützten automatischen Indexierens.
- Footnote
- Diese Studie wurde im Auftrag der Deutschen Bibliothek durchgeführt und nicht veröffentlicht.
