Search (77 results, page 1 of 4)

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Imprint

Potsdam : Fachhochschule, Institut für Information und Dokumentation

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Content

"Die Nationalbibliotheken von Dänemark, Estland und Lettland haben mit Jahresbeginn den Teilnehmerkreis von »The European Library« (www.europeanlibrary.com) erweitert. Mit der Weiterentwicklung der Portalsoftware ist das Angebot schneller und zuverlässiger geworden. Die unter dem Namen "The Europcan Library," (TEL) im Spätherbst vergangenen Jahres gestartete Europäische Digitale Bibliothek wächst weiter. Bis Ende 2006 werden die Onlinekataloge und mehr als 200 Sammlungen von 2,3 europäischen Nationalbibliotheken über dieses Internetportal recherchierbar sein. Das Angebot wird sich damit innerhalb eines Jahres nahezu verdoppeln. The European library ermöglicht integrierte Suchanfragen über institutionelle und geografische Grenzen hinweg. Das in den umfangreichen Datenbeständen der Bibliotheken repräntierte kuIturelle Erbe Europas wird damit vom Schreibtisch aus zugänglich. Urheberrechtsfreie digitale Dokumente können direkt abgerufen werden. Teilnehmende Bibliotheken passen ihre Kataloge an die Metadaten- und Suchstandards der Europäischen Digitalen Bibliothek an und ermöglichen damit die katalog- und sammlurngsübergreifende Recherche. Für The European Library wurde eine neue Webtechnologie verwendet, mit der Portalfunktionen einfach und preiswert realisiert werden können. Die Software "Portal-in-the-Browser" (www.dlib.org/dlib/february04/vanveen/02vanveen.html) steht Interessenten frei zur Verfügung. Die Entwickler erhoffen eine Anwendung in weiteren kulturellen Bereichen und damit die mögliche Verknüpfung der verschiedenen Sektoren. Für das kommende Frühjahr ist eine Benutzerbefragung zur weiteren Verbesserung von The European library geplant."

Series

Information digital

Theme

Information Gateway

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Content

"Das Portal "Verteilte Digitale Inkunabelbibliothek (vdlb)" ist seit Mitte des Jahres online. Es stehen mehr als 550 digitalisierte Inkunabeln zur Verfügung. Mit der gemeinsamen Digitalisierung von mehr als 1.000 der geschätzten 27.000 Inkunabeln wird ein signifikanter Teil erschlossen sein. Im Workshop am 2./3.11.2005 an der Universität Köln wird beraten: - Welches Interesse haben wir an Inkunabeln und warum sollten sie über Internet zur Verfügung gestellt werden? - Wie ist das Angebot des vdlb-Portals methodisch und inhaltlich zu bewerten? - Welche Perspektiven gibt es für eine Gesamtdigitalisierung aller Inkunabelausgaben und für die Konstituierung eines zentralen Portals?"

Object

Verteilte Digitale Inkunabelbibliothek

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Abstract

Das Projekt "KOBV-Informationsportal" In den vergangenen Jahren hat der Kooperative Bibliotheksverbund BerlinBrandenburg (KOBV) mit der KOBV-Suchmaschine eine Internet-Plattform mit einer offenen Architektur geschaffen. Auf dieser technischen Basis erweitert er kontinuierlich sein Dienstleistungsangebot, wobei die Prinzipien des KOBV - insbesondere Offenheit, Heterogenität und Dezentralität auf technischer und organisatorischer Ebene - gewahrt bleiben. Mitte 2001 hat die KOBV-Zentrale gemeinsam mit den regionalen Bibliotheken das zweite große Entwicklungsprojekt "KOBV-Informationsportal" gestartet. Zielsetzung war der Aufbau eines kooperativen regionalen Portals mit Einsatz von Linking-Mechanismen zur "nahtlosen" Navigation in freien und lizenzierten Dokumenten und mit Einsatz von Instrumenten zur dezentralen Authentifizierung und Autorisierung über das Internet. Im Dezember 2003 hat das "KOBV-Portal - Digitale Bibliothek Berlin-Brandenburg" planmäßig in einer ersten Ausbaustufe den Routinebetrieb aufgenommen. Das KOBV-Portal bietet in dieser Stufe den Nachweis über die in den großen Bibliotheken lizenzierten Ressourcen und elektronischen Zeitschriften, zudem die nahtlose Navigation mittels des Reference-LinkingWerkzeuges SFX zu verschiedenen Diensten wie Fernleihe, Subito und freien Volltexten im Internet sowie zu frei zugänglichen elektronischen Zeitschriften. Die mit der verteilten Authentifizierung und Autorisierung verbundene Zielsetzung konnte im Rahmen des Projektes erst zum Teil umgesetzt werden. Realisiert wurde die Remote-Authentifizierung, mit der sich ein Nutzer, der online eine Fernleih-Bestellung aufgeben möchte, über das Internet in seiner Heimatbibliothek authentifizieren kann. Des weiteren ist der Zugriff auf lizenzierte Bestände im Campus einer Hochschule mittels IP-Checking möglich. Als weiteren wesentlichen Bestandteil des KOBV-Portals hat die KOBVZentrale mit den Bibliotheken einen Workflow für ein Metadata-Sharing abgestimmt und für die Adaption und Normalisierung lokaler Metadaten aus lokalen Bibliothekssystemen und -Portalen den KOBV-Metadaten-AustauschParser (KMA-Parser) entwickelt. Darüber hinaus sollen Bibliotheken, deren Metadaten bislang lediglich in unstrukturierter Form vorliegen, in die Lage versetzt werden, strukturierte Metadaten anzulegen, zu liefern und nachzunutzen. Dazu hat die KOBV-Zentrale das mit einer Web-Katalogisierungsschnittstelle ausgestattete "Metadata-Tool" entwickelt, das im Herbst 2004 in Betrieb genommen wird. Die für das Metadata-Sharing entwickelten Komponenten und Module sollen den Bibliotheken die Mehrfacherfassung ersparen und ihnen die Möglichkeit der wechselseitigen Nachnutzung der Metadaten eröffnen.

Theme

Information Gateway

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Abstract

Die digitale Bibliothek, in der alles mit allem verlinkt ist, und man mit wenigen Klicks zur gewünschten Information gelangt, ist nach wie vor ein Traum vieler Bibliothekare und Benutzer. In der Realität aber existieren heterogene Informationssysteme nebeneinander: Online-Datenbanken, Aggregatordatenbanken, A&I-Datenbanken, Plattformen für E-Journals, OPACs. Zwischen diesen verschiedenen Systemen muss der Nutzer nun hin- und herschalten, um die gewünschte Information zu erhalten. Dass eine Verlinkung der verschiedenen elektronischen Ressourcen der Bibliothek ein Desiderat ist, hat inzwischen auch die Industrie erkannt. Es sind bereits erste Systeme auf dem Markt, die eine Navigation in heterogenen Informationsquellen ermöglichen. Zu nennen ist hier in erster Linie ExLibris SFX. Auch EBSCO hat mit LinkSource eine auf openURL basierte Lösung vorgelegt, um alle verfügbaren Quellen in eine Suchanfrage einzubinden. Diese Systeme sind prinzipiell sehr vielversprechend und von der Bibliothek sehr komfortabel zu managen, bewegen sich aber derzeit in einem preislichen Rahmen, der von den wenigsten Bibliotheken noch zusätzlich zu den ohnehin schon hohen Kosten für elektronische Ressourcen aufgebracht werden kann. An der UB Osnabrück und SuUB Bremen wurden daher Überlegungen angestellt, wie man ohne diese kostenpflichtigen Zusatzdienste die verschiedenen elektronischen Angebote der Bibliothek besser miteinander verknüpfen könnte. Konkret lautete die Fragestellung so: "Wie komme ich nach einer Recherche in einer bibliografischen Online-Datenbank zum Volltext?" Die meisten OnlineDatenbanken sind immer noch rein bibliografische Datenbanken, die allerhöchstens ein Abstract anbieten (A&I-Datenbanken). Erscheint ein Rechercheergebnis dem Benutzer so interessant, dass er gern den Volltext des betreffenden Artikels oder des Buches einsehen möchte, so hat er dazu mehrere Möglichkeiten: Die einfachste Möglichkeit liegt darin, den Volltext in elektronischer Form aufzurufen. Besteht diese Möglichkeit nicht, so muss er im OPAC recherchieren, ob der gesuchte Titel zumindest in gedruckter Version in der Bibliothek vorhanden ist. Ist dies nicht der Fall, so hat er die Möglichkeit, den Titel per Fernleihe oder document delivery zu bestellen. Diese drei Schritte - Aufrufen des Volltextes, Recherche im OPAC, Fernleihbestellung - sollten für den Benutzer dadurch vereinfacht werden, dass ent sprechende Links in die Online-Datenbanken integriert werden. So kann das aufwändige "kopieren und einfügen"- Verfahren entfallen. Die Einrichtung dieser verschiedenen Links brachte administrative, technische und lizenzrechtliche Probleme mit sich. Online-Datenbanken werden von verschiedenen Anbietern auf den Markt gebracht: von international agierenden Firmen bis hin zu kleinen Körperschaften. Es musste bei jedem Anbieter geklärt werden, welche Verlinkungen technisch und lizenzrechtlich möglich sind. Links zum elektronischen Volltext sind für den Nutzer sicherlich die ideale Lösung, denn so kann er vom Büro oder CIP-Pool aus den Artikel lesen bzw. ausdrucken, ohne in die Bibliothek gehen und dort nach der Print-Ausgabe suchen zu müssen. Bei Volltextlinks muss man zwischen zwei Arten von Links unterscheiden: Institutionsunabhängige Links sind zentral für alle Abonnenten der Online-Datenbank eingerichtet und werden immer angezeigt, unabhängig davon, ob die Bibliothek einen lizenzierten Volltextzugriff auf die betreffende elektronische Ressource hat. Institutionsabhängige Links sind nur für die elektronischen Ressourcen eingerichtet, für die die Bibliothek einen lizenzierten Zugang besitzt.

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Abstract

Das steigende Angebot an Datenbanken und weiteren Systeme im Bereich bibliografischer Informationen führt dazu, dass es für Benutzer sehr mühsam und mit einem enormen Zeitaufwand verbunden ist, in allen einzelnen Systemen zu recherchieren, da diese unterschiedliche Benutzeroberflächen und Recherchemöglichkeiten anbieten. Verteilte bibliografische Informationssysteme ermöglichen einen einheitlichen Einstiegspunkt zu heterogenen Systemen. Sie bündeln verschiedene Angebote. In diesem Text wird ein Überblick über diese verteilten Informationssysteme gegeben. Es wird dargestellt, wie eine Suche in einem solchen System abläuft, welche weiteren Funktionen angeboten werden können. Darüber hinaus wird betrachtet, wie verteilte Informationssysteme aufgebaut und vernetzt sind. Die Darstellungen werden verdeutlicht durch praktische Beispiele aus dem Bibliotheks- und Informationswesen. Insbesondere wird auf den KVK, ZACK, die KOBVSuchmaschine, die Digitale Bibliothek NRW, das DIMDI, vascoda und Renardus eingegangen.

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Abstract

Das steigende Angebot an Datenbanken und weiteren Systeme im Bereich bibliografischer Informationen führt dazu, dass es für Benutzer sehr mühsam und mit einem enormen Zeitaufwand verbunden ist, in allen einzelnen Systemen zu recherchieren, da diese unterschiedliche Benutzeroberflächen und Recherchemöglichkeiten anbieten. Verteilte bibliografische Informationssysteme ermöglichen einen einheitlichen Einstiegspunkt zu heterogenen Systemen. Sie bündeln verschiedene Angebote. In diesem Text wird ein Überblick über diese verteilten Informationssysteme gegeben. Es wird dargestellt, wie eine Suche in einem solchen System abläuft, welche weiteren Funktionen angeboten werden können. Darüber hinaus wird betrachtet, wie verteilte Informationssysteme aufgebaut und vernetzt sind. Die Darstellungen werden verdeutlicht durch praktische Beispiele aus dem Bibliotheks- und Informationswesen. Insbesondere wird auf den KVK, ZACK, die KOBVSuchmaschine, die Digitale Bibliothek NRW, das DIMDI, vascoda und Renardus eingegangen.

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Source

Journal of information science. 29(2003) no.5, S.357-374

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Source

Information processing and management. 35(1999) no.2, S.101-119

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Abstract

Information subject gateways provide targeted discovery services for their users, giving access to Web resources selected according to quality and subject coverage criteria. Information gateways recognise that they must collaborate on a wide range of issues relating to content to ensure continued success. This report is informed by discussion of content activities at the 1999 Imesh Workshop. The author considers the implications for subject based gateways of co-operation regarding coverage policy, creation of metadata, and provision of searching and browsing across services. Other possibilities for co-operation include working more closely with information providers, and diclosure of information in joint metadata registries

Source

Online information review. 24(2000) no.1, S.40-45

Theme

Information Gateway

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Abstract

A multi-database model of distributed information retrieval is presented, in which people are assumed to have access to many searchable text databases. In such an environment, full-text information retrieval consists of discovering database contents, ranking databases by their expected ability to satisfy the query, searching a small number of databases, and merging results returned by different databases. This paper presents algorithms for each task. It also discusses how to reorganize conventional test collections into multi-database testbeds, and evaluation methodologies for multi-database experiments. A broad and diverse group of experimental results is presented to demonstrate that the algorithms are effective, efficient, robust, and scalable

Series

The Kluwer international series on information retrieval; 7

Source

Advances in information retrieval: Recent research from the Center for Intelligent Information Retrieval. Ed.: W.B. Croft

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Abstract

In this position paper we propose a document-centric middleware component called Living Documents to support context-aware information retrieval in distributed communities. A Living Document acts as a micro server for a document which contains computational services, a semi-structured knowledge repository to uniformly store and access context-related information, and finally the document's digital content. Our initial prototype of Living Documents is based an the concept of mobile agents and implemented in Java and XML.

Source

Gaining insight from research information (CRIS2002): Proceedings of the 6th International Conference an Current Research Information Systems, University of Kassel, August 29 - 31, 2002. Eds: W. Adamczak u. A. Nase

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Abstract

The combination of different text representations and search strategies has become a standard technique for improving the effectiveness of information retrieval. Combination, for example, has been studied extensively in the TREC evaluations and is the basis of the "meta-search" engines used on the Web. This paper examines the development of this technique, including both experimental results and the retrieval models that have been proposed as formal frameworks for combination. We show that combining approaches for information retrieval can be modeled as combining the outputs of multiple classifiers based on one or more representations, and that this simple model can provide explanations for many of the experimental results. We also show that this view of combination is very similar to the inference net model, and that a new approach to retrieval based on language models supports combination and can be integrated with the inference net model

Series

The Kluwer international series on information retrieval; 7

Source

Advances in information retrieval: Recent research from the Center for Intelligent Information Retrieval. Ed.: W.B. Croft

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Abstract

User demands to have access to complete and actual information about research may require integration of data from different CRISs. CRISs are rarely homogenous systems and problems of CRISs integration must be addressed from technological point of view. Implementation of CRIS providing access to heterogeneous data distributed among a number of CRISs is described. A few technologies - distributed databases, web services, semantic web are used for distributed CRIS to address different user requirements. Distributed databases serve to implement very efficient integration of homogenous systems, web services - to provide open access to research information, semantic web - to solve problems of integration semantically and structurally heterogeneous data sources and provide intelligent data retrieval interfaces. The problems of data completeness in distributed systems are addressed and CRIS-adequate solution for data completeness is suggested.

Source

Gaining insight from research information (CRIS2002): Proceedings of the 6th International Conference an Current Research Information Systems, University of Kassel, August 29 - 31, 2002. Eds: W. Adamczak u. A. Nase

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Abstract

How to merge and organise query results retrieved from different resources is one of the key issues in distributed information retrieval. Some previous research and experiments suggest that cluster-based document browsing is more effective than a single merged list. Cluster-based retrieval results presentation is based on the cluster hypothesis, which states that documents that cluster together have a similar relevance to a given query. However, while this hypothesis has been demonstrated to hold in classical information retrieval environments, it has never been fully tested in heterogeneous distributed information retrieval environments. Heterogeneous document representations, the presence of document duplicates, and disparate qualities of retrieval results, are major features of an heterogeneous distributed information retrieval environment that might disrupt the effectiveness of the cluster hypothesis. In this paper we report on an experimental investigation into the validity and effectiveness of the cluster hypothesis in highly heterogeneous distributed information retrieval environments. The results show that although clustering is affected by different retrieval results representations and quality, the cluster hypothesis still holds and that generating hierarchical clusters in highly heterogeneous distributed information retrieval environments is still a very effective way of presenting retrieval results to users.

Source

Information processing and management. 42(2006) no.5, S.1137-1150

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Abstract

Describes the backgroud to the construction of a thesaurus at Hydro-Quebec, Quebec, Canada. Several information units, linked to form a network, share the same bibliographic database. The need for coherence and efficiency was the principle motive for the construction of the multidisciplinary thesaurus. Describes the construction process, discusses the specifity of the tool, its circulation, and considers its use on a partnership basis with other information services

Footnote

Übers. des Titels: The development of an information tool at Hydro-Quebec: the HQ Thesaurus

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Abstract

Nowadays, users of information services are faced with highly decentralised, heterogeneous document sources with different content analysis. Semantic heterogeneity occurs e.g. when resources using different systems for content description are searched using a simple query system. This report describes several approaches of handling semantic heterogeneity used in projects of the German Social Science Information Centre

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Abstract

The success of the World Wide Web Shows that we can access, search, and retrieve information from globally distributed databases. lf a database, such as a library catalog, has some sort of Web-based front end, we can type its URL into a Web browser and use its HTML-based forms to search for items in that database. Depending an how well the query conforms to the database content, how the search engine interprets the query, and how the server formats the results into HTML, we might actually find something usable. While the first two issues depend an ourselves and the server, an the Web the latter falls to the mercy of HTML, which we all know as a great destroyer of information because it codes for display but not for content description. When looking at an HTML-formatted display, we must depend an our own interpretation to recognize such entities as author names, titles, and subject identifiers. The Web browser can do nothing but display the information. lf we want some other view of the result, such as sorting the records by date (provided it offers such an option to begin with), the server must do it. This makes poor use of the computing power we have at the desktop (or even laptop), which, unless it involves retrieving more records, could easily do the result Set manipulation that we currently send back to the server. Despite having personal computers wich immense computational power, as far as information retrieval goes, we still essentially use them as dumb terminals.

Imprint

Urbana-Champaign, IL : Illinois University at Urbana-Champaign, Graduate School of Library and Information Science

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Abstract

Specifically designed for core units in library automation and information systems, this long awaited new text gives students a comprehensive overview of one of the most critical areas of library operations. Produced by two internationally known scholars, Thomas Kochtanek and Joseph Matthews, this book will enable students to take the lead in managing an immense diversity of information resources and at the same time handle the complexities that information technology brings to the library. Giving important insight into library information systems-from the historical background to the latest technological trends and developments-the book is organized into 14 chapters, each presenting helpful information on such topics as systems design, types of systems, coverage of standards and standards organizations, technology axioms, system selection and implementation, usability of systems, library information systems management, technology trends, digital libraries, and more. New to the acclaimed Library and Information Science Text Series, this book will prove an indispensable resource to students preparing for a career in today's ever-evolving library environment. Complete with charts and illustrations, chapter summaries, suggested print and electronic resources, a glossary of terms, and an index, this text will be of central importance to libraries and library schools everywhere.

Footnote

Rez. in: JASIST 54(2003) no.12, S.1166-1167 (Brenda Chawner): "Kochtanek and Matthews have written a welcome addition to the small set of introductory texts an applications of information technology to library and information Services. The book has fourteen chapters grouped into four sections: "The Broader Context," "The Technologies," "Management Issues," and "Future Considerations." Two chapters provide the broad content, with the first giving a historical overview of the development and adoption of "library information systems." Kochtanek and Matthews define this as "a wide array of solutions that previously might have been considered separate industries with distinctly different marketplaces" (p. 3), referring specifically to integrated library systems (ILS, and offen called library management systems in this part of the world), and online databases, plus the more recent developments of Web-based resources, digital libraries, ebooks, and ejournals. They characterize technology adoption patterns in libraries as ranging from "bleeding edge" to "leading edge" to "in the wedge" to "trailing edge"-this is a catchy restatement of adopter categories from Rogers' diffusion of innovation theory, where they are more conventionally known as "early adopters," "early majority," "late majority," and "laggards." This chapter concludes with a look at more general technology trends that have affected library applications, including developments in hardware (moving from mainframes to minicomputers to personal Computers), changes in software development (from in-house to packages), and developments in communications technology (from dedicated host Computers to more open networks to the current distributed environment found with the Internet). This is followed by a chapter describing the ILS and online database industries in some detail. "The Technologies" begins with a chapter an the structure and functionality of integrated library systems, which also includes a brief discussion of precision versus recall, managing access to internal documents, indexing and searching, and catalogue maintenance. This is followed by a chapter an open systems, which concludes with a useful list of questions to consider to determine an organization's readiness to adopt open source solutions. As one world expect, this section also includes a detailed chapter an telecommunications and networking, which includes types of networks, transmission media, network topologies, switching techniques (ranging from dial up and leased lines to ISDN/DSL, frame relay, and ATM). It concludes with a chapter an the role and importance of standards, which covers the need for standards and standards organizations, and gives examples of different types of standards, such as MARC, Dublin Core, Z39.50, and markup standards such as SGML, HTML, and XML. Unicode is also covered but only briefly. This section world be strengthened by a chapter an hardware concepts-the authors assume that their reader is already familiar with these, which may not be true in all cases (for example, the phrase "client-Server" is first used an page 11, but only given a brief definition in the glossary). Burke's Library Technology Companion: A Basic Guide for Library Staff (New York: Neal-Schuman, 2001) might be useful to fill this gap at an introductory level, and Saffady's Introduction to Automation for Librarians, 4th ed. (Chicago: American Library Association, 1999) world be better for those interested in more detail. The final two sections, however, are the book's real strength, with a strong focus an management issues, and this content distinguishes it from other books an this topic such as Ferguson and Hebels Computers for Librarians: an Introduction to Systems and Applications (Waggawagga, NSW: Centre for Information Studies, Charles Sturt University, 1998). ...
Though the book definitely meets a need for an up-to-date introduction to library information systems and associated management issues, and the emphasis an management issues means that it will not date too quickly, there is room for improvement. Some topics are described too briefly to be useful, such as customization/personalization, which is covered in a single paragraph, and does not mention recent developments such as the MyLibrary concept. Other topics seem to have only a peripheral connection to the main chapter theme-for example, it is surprising to find a discussion of information literacy at the end of the chapter an system selection and implementation, and the material an personalization/customization is at the end of the discussion of intranets. Despite these comments, 1 would consider using this as a textbook in an introductory course an library automation or information technology, and practitioners who want to upgrade their knowledge of current practices and issues will also find it useful. People who are primarily interested in a specific topic, such as information systems planning or system selection and implementation are likely to find more specialized books such as Planning for Integrated Systems and Technologies: A How-to-Do-It Manual for Librarians by John M. Cohn, Anne L. Kelsey, and Keith Michael Fiels (New York: Neal-Schuman, 2001) more useful."

LCSH

Library information networks
Information storage and retrieval systems
Information technology

Series

Library and information science text series

Subject

Library information networks
Information storage and retrieval systems
Information technology