Search (103 results, page 2 of 6)

  • × theme_ss:"OPAC"
  • × year_i:[2000 TO 2010}
  1. Gödert, W.: Navigation und Konzepte für ein interaktives Retrieval im OPAC : Oder: Von der Informationserschließung zur Wissenserkundung (2004) 0.01 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
    Klassifikationssysteme im Online-Retrieval
  2. Gödert, W.: Navigation und Konzepte für ein interaktives Retrieval im OPAC : Oder: Von der Informationserschließung zur Wissenserkundung (2004) 0.01 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
    Klassifikationssysteme im Online-Retrieval
  3. Calhoun, K.: ¬The changing nature of the catalog and its integration with other discovery tools : Prepared for the Library of Congress (2006) 0.01 
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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.
  4. Golderman, G.M.; Connolly, B.: Between the book covers : going beyond OPAC keyword searching with the deep linking capabilities of Google Scholar and Google Book Search (2004/05) 0.01 
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    Abstract
    One finding of the 2006 OCLC study of College Students' Perceptions of Libraries and Information Resources was that students expressed equal levels of trust in libraries and search engines when it came to meeting their information needs in a way that they felt was authoritative. Seeking to incorporate this insight into our own instructional methodology, Schaffer Library at Union College has attempted to engineer a shift from Google to Google Scholar among our student users by representing Scholar as a viable adjunct to the catalog and to snore traditional electronic resources. By attempting to engage student researchers on their own terms, we have discovered that most of them react enthusiastically to the revelation that the Google they think they know so well is, it turns out, a multifaceted resource that is capable of delivering the sort of scholarly information that will meet with their professors' approval. Specifically, this article focuses on the fact that many Google Scholar searches link hack to our own Web catalog where they identify useful book titles that direct OPAC keyword searches have missed.
    Date
    2.12.2007 19:39:22
  5. Wien, C.: Sample sizes and composition : their effect on recall and precision in IR experiments with OPACs (2000) 0.01 
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    Abstract
    This article discusses how samples of records for laboratory IR experiments on OPACs can be constructed so that results obtained from different experiments can be compared. The literature on laboratory IR experiments seems to indicate that the retrieval effectiveness (recall and precision) is affected by the way the samples of records for such experiments are generated. Especially the amount of records and the subject area coverage of the records seems to affect the retrieval effectiveness. This article contains suggestions for the construction of samples for laboratory IR experiments on OPACs and demonstrates that the retrieval effectiveness is affected by different sample size and composition.
  6. Oehlschläger, S.: Aus der 48. Sitzung der Arbeitsgemeinschaft der Verbundsysteme am 12. und 13. November 2004 in Göttingen (2005) 0.01 
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    Content
    Die Deutsche Bibliothek Retrieval von Content In dem Projekt wird angestrebt, Verfahren zu entwickeln und einzuführen, die automatisch und ohne intellektuelle Bearbeitung für das Content-Retrieval ausreichend Sucheinstiege bieten. Dabei kann es sich um die Suche nach Inhalten von Volltexten, digitalen Abbildern, Audiofiles, Videofiles etc. von in Der Deutschen Bibliothek archivierten digitalen Ressourcen oder digitalen Surrogaten archivierter analoger Ressourcen (z. B. OCR-Ergebnisse) handeln. Inhalte, die in elektronischer Form vorhanden sind, aber dem InternetBenutzer Der Deutschen Bibliothek bisher nicht oder nur eingeschränkt zur Verfügung stehen, sollen in möglichst großem Umfang und mit möglichst großem Komfort nutzbar gemacht werden. Darüber hinaus sollen Inhalte benutzt werden, die für ein in ILTIS katalogisiertes Objekt beschreibenden Charakter haben, um auf das beschriebene Objekt zu verweisen. Die höchste Priorität liegt dabei auf der Erschließung von Inhalten in Textformaten. In einem ersten Schritt wurde der Volltext aller Zeitschriften, die im Projekt "Exilpresse digital" digitalisiert wurden, für eine erweiterte Suche genutzt. In einem nächsten Schritt soll die PSI-Software für die Volltextindexierung von Abstracts evaluiert werden. MILOS Mit dem Einsatz von MILOS eröffnet sich die Möglichkeit, nicht oder wenig sachlich erschlossene Bestände automatisch mit ergänzenden Inhaltserschließungsinformationen zu versehen, der Schwerpunkt liegt dabei auf der Freitext-Indexierung. Das bereits in einigen Bibliotheken eingesetzte System, das inzwischen von Der Deutschen Bibliothek für Deutschland lizenziert wurde, wurde in eine UNIX-Version überführt und angepasst. Inzwischen wurde nahezu der gesamte Bestand rückwirkend behandelt, die Daten werden im Gesamt-OPAC für die Recherche zur Verfügung stehen. Die in einer XMLStruktur abgelegten Indexeinträge werden dabei vollständig indexiert und zugänglich gemacht. Ein weiterer Entwicklungsschritt wird in dem Einsatz von MILOS im Online-Verfahren liegen.
    Hessisches BibliotheksinformationsSystem (HEBIS) Personennamendatei (PND) Vor dem Hintergrund der Harmonisierungsbestrebungen bei den Normdateien hat der HeBIS-Verbundrat nach erneuter Diskussion mehrheitlich entschieden, künftig neben SWD und GKD auch die PND als in HeBIS integrierte Normdatei obligatorisch zu nutzen. Im Zuge der wachsenden Vernetzung der regionalen Verbundsysteme kommt der Homogenität der Datensätze eine zunehmend wichtigere Bedeutung zu. Konkret wird dies speziell für HeBIS mit dem Produktionsbeginn des HeBIS-Portals und der integrierten verbundübergreifenden Fernleihe. Nur wenn die Verfasserrecherche in den einzelnen Verbunddatenbanken auf weitgehend einheitliche Datensätze einschließlich Verweisungsformen trifft, kann der Benutzer gute Trefferergebnisse erwarten und damit seine Chancen erhöhen, die gewünschte Literatur über Fernleihe bestellen zu können. Das Gesamtkonzept ist ausgelegt auf eine pragmatische und aufwandsreduzierte Vorgehensweise. Mit der Umsetzung wurde begonnen. Hochschulbibliothekszentrum des Landes Nordrhein-Westfalen (HBZ) FAST-Suchmaschine Das HBZ hat die Suchmaschinentechnologie des norwegischen Herstellers FAST lizenziert. Ziel ist es, die Produkte des HBZ mit Hilfe innovativer Suchmaschinentechnologien in einer neuen Ausrichtung zu präsentieren. Die Präsentation soll einen schnellen Recherche-Zugang zu den NRWVerbunddaten mittels FAST-Suchmaschinentechnologie mit folgenden Eigenschaften beinhalten: - Eine Web-Oberfläche, um für Laien eine schnelle Literatursuche anbieten zu können. - Eine Web-Oberfläche, um für Expertinnen und Experten eine schnelle Literatur-Suche anbieten zu können. - Präsentation von Zusatzfunktionen, die in gängigen Bibliothekskatalogen so nicht vorhanden sind. - Schaffung einer Zugriffsmöglichkeit für den KVK auf die Verbunddaten mit sehr kurzen Antwortzeiten Digitale Bibliothek Die Mehrzahl der Bibliotheken ist inzwischen auf Release 5 umgezogen. Einige befinden sich noch im Bearbeitungsstatus. Von den letzten drei Bibliotheken liegen inzwischen die Umzugsanträge vor. Durch die Umstrukturierung der RLB Koblenz zum LBZ Rheinland-Pfalz werden die Einzelsichten der RLB Koblenz, PLB Speyer und der Bipontina in Zweibrücken mit den Büchereistellen Koblenz und Neustadt zu einer Sicht verschmolzen.
  7. Furner, J.: On Recommending (2002) 0.01 
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    Abstract
    By "recommending'' Furner refers to collaborative filtering where multiple user rankings of items are used to create a single new ranking for a user, or to a system itself generating rankings of items for its users. This would include document retrieval systems as a subset recommending systems in the second instance, but in the first would make document retrieval system and recommending system synonyms. Information seeking actions are classified either as evaluative (determining the worth of an item), recommending (expressing perceived worth), or informative (examining the content of an item). The task of the information retrieval system is to be to predict the particular ordering that the user would specify in a given context, given complete knowledge of the collection. Citations may be considered as the result of evaluative and recommending decisions by the author, and assigned index terms may be considered as the same sort of decisions by the indexer. The selection of relevant documents by a searcher from a list also involves evaluative and recommending decisions. This suggests that searchers should have the opportunity to bring multiple ranking techniques to bear.
  8. Ikas, W.-V.; Litten, F.: World Wide Web und Catalogue Enrichment : Möglichkeiten des verbesserten Nachweises von mikroverfilmten Handschriften und Inkunabeln (2007) 0.01 
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    Date
    22. 5.2007 11:19:21
  9. Archuby, C.G.: Interfaces se recuperacion para catalogos en linea con salidas ordenadas por probable relevancia (2000) 0.01 
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    Footnote
    Übers. d. Titels: Interface for retrieval from online access catalogues with ranked results according to their relevance
  10. Markey, K.: Twenty-five years of end-user searching : part 1: research findings (2007) 0.01 
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    Abstract
    This is the first part of a two-part article that reviews 25 years of published research findings on end-user searching in online information retrieval (IR) systems. In Part 1 (Markey, 2007), the author seeks to answer the following questions: What characterizes the queries that end users submit to online IR systems? What search features do people use? What features would enable them to improve on the retrievals they have in hand? What features are hardly ever used? What do end users do in response to the system's retrievals? Are end users satisfied with their online searches? Summarizing searches of online IR systems by the search features people use everyday makes information retrieval appear to be a very simplistic one-stop event. In Part 2, the author examines current models of the information retrieval process, demonstrating that information retrieval is much more complex and involves changes in cognition, feelings, and/or events during the information seeking process. She poses a host of new research questions that will further our understanding about end-user searching of online IR systems.
  11. Long, C.E.: Improving subject searching in Web-based OPACs : evaluation of the problem and guidelines for design (2000) 0.01 
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    Abstract
    Online catalog users search predominately by subject, yet it is the most difficult search to perform and retrieves records only about one-half of the time. A new generation of OPACs (online public access catalogs) is on the horizon, the Web-based OPAC. Web-based OPACs allow users to access online catalogs through a WWW (World Wide Web) interface and have the potential to improve patrons' ability to search by subject. But will this potential be realized? This article proposes some basic guidelines that can be incorporated into Web-based OPAC interface design to help users perform subject searches more effectively, and evaluates how well Web-based OPACs currently in operation address the subject searching problem
  12. Heinz, S.: Realisierung und Evaluierung eines virtuellen Bibliotheksregals für die Informationswissenschaft an der Universitätsbibliothek Hildesheim (2003) 0.01 
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    Theme
    Klassifikationssysteme im Online-Retrieval
    Semantisches Umfeld in Indexierung u. Retrieval
  13. Hajdu Barát, A.: Usability and the user interfaces of classical information retrieval languages (2006) 0.01 
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    Theme
    Klassifikationssysteme im Online-Retrieval
  14. Harmsen, B.: Adding value to Web-OPACs (2000) 0.01 
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  15. Breeding, M.: Thinking about your next OPAC (2007) 0.01 
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    Abstract
    It's clear that today's typical library users are Web-sawy and have very high expectations. Librarians need to offer interfaces on Web sites that match or exceed those found on the commercial Web. Paired with high-quality content that's selected and created by librarians, a state-of-the-art Web interface is a compelling destination for users.
  16. Steiner, E.S.: OPAC 2.0 : Mit Web 2.0-Technologie zum Bibliothekskatalog der Zukunft? (2007) 0.01 
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    Abstract
    Diese Arbeit besteht im Wesentlichen aus zwei Teilen: Der erste Teil beinhaltet eine Einführung in den Begriff Web 2.0 und in die allgemeinen Rahmenbedingungen der zugehörigen technischen Entwicklungen. Des Weiteren werden exemplarische Techniken vorgestellt, die Web 2.0 zugeschrieben werden können sowie einige beispielhafte Anwendungen. Im zweiten Teil wird die Diskussion um Bibliothek 2.0 aufgegriffen, um anschließend näher auf Web 2.0 Techniken in Bibliothekskatalogen bzw. den OPAC 2.0 einzugehen. Verschiedene Techniken, die im OPAC 2.0 Anwendung finden können, werden diskutiert und zuletzt werden einige beispielhafte OPACs vorgestellt.
  17. Slone, D.J.: ¬A bird's eye view of cross-platform web interaction (2005) 0.01 
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    Abstract
    Purpose - This exploratory study sets out to describe the ways in which end-users exchanged information between the web and a web online catalog, how they searched one device based on what they knew about the other, and their experiences in navigating between the two devices. Design/methodology/approach - Thirty-one participants were observed searching the web or a web online catalog. After the observations, an interview guide was used to ask targeted questions. Findings - The findings suggest that people familiar with the use of traditional online catalogs were more comfortable using web tools than those who lacked online catalog experience. People who had recent web experience expected online catalog searching to be similar to web searching. However, drawing too close an association between the two systems sometimes caused difficulties when the searching protocols varied, like keyword searching versus selecting an index. Research limitations/implications - Some limitations of the study include a small sampling size, varied responses to interview questions, obtrusive procedures, and lack of generalizability to groups or settings dissimilar from the one in this study. Originality/value - This study provides a rare look into the challenges faced by a diverse group of public library users on the web. It is instructive for practicing librarians and researchers.
  18. Markey, K.: Twenty-five years of end-user searching : part 2: future research directions (2007) 0.01 
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    Abstract
    This is the second part of a two-part article that examines 25 years of published research findings on end-user searching of online information retrieval (IR) systems. In Part 1, it was learned that people enter a few short search statements into online IR systems. Their searches do not resemble the systematic approach of expert searchers who use the full range of IR-system functionality. Part 2 picks up the discussion of research findings about end-user searching in the context of current information retrieval models. These models demonstrate that information retrieval is a complex event, involving changes in cognition, feelings, and/or events during the information seeking process. The author challenges IR researchers to design new studies of end-user searching, collecting data not only on system-feature use, but on multiple search sessions and controlling for variables such as domain knowledge expertise and expert system knowledge. Because future IR systems designers are likely to improve the functionality of online IR systems in response to answers to the new research questions posed here, the author concludes with advice to these designers about retaining the simplicity of online IR system interfaces.
  19. Whitney , C.; Schiff, L.: ¬The Melvyl Recommender Project : developing library recommendation services (2006) 0.01 
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    Abstract
    Popular commercial on-line services such as Google, e-Bay, Amazon, and Netflix have evolved quickly over the last decade to help people find what they want, developing information retrieval strategies such as usefully ranked results, spelling correction, and recommender systems. Online library catalogs (OPACs), in contrast, have changed little and are notoriously difficult for patrons to use (University of California Libraries, 2005). Over the past year (June 2005 to the present), the Melvyl Recommender Project (California Digital Library, 2005) has been exploring methods and feasibility of closing the gap between features that library patrons want and have come to expect from information retrieval systems and what libraries are currently equipped to deliver. The project team conducted exploratory work in five topic areas: relevance ranking, auto-correction, use of a text-based discovery system, user interface strategies, and recommending. This article focuses specifically on the recommending portion of the project and potential extensions to that work.
  20. BOND: Web-Opac Premium (2004) 0.01 
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    Content
    "Orientiert an den Anforderungen der Bibliotheksbenutzer, hat BOND nun eine PremiumVersion des Web-Opacs entwickelt. Ziel dabei war es, das Angebot der Bibliothek für ihre LeserInnen noch attraktiver zu gestalten. Im Mittelpunkt steht dabei das tatsächliche Informationsverhalten der Bibliotheksbenutzer. Mit dem neuen Web-Opac Premium werden Informationen kanalisiert und so aufbereitet, dass die LeserInnen sie noch schneller und bequemer im Zugriffhaben. Neben den Standard WebOpac-Funktionen (recherchieren, verlängern, vorbestellen, etc.) ist der neue Web-Opac Premium daher zusätzlich mit zahlreichen nützlichen Web-Portalfunktionen gespickt. Diese ermöglichen der Bibliothek, ihren LeserInnen ganz individuell gewünschte Informationen und eine Vielzahl attraktiver Services anzubieten. Beispiele für die Portalfunktionen: Mit dem Web-Opac Premium können die Leser einfach und übersichtlich in hochwertigen Allgemein- und Fach-Lexika suchen. Jeder Benutzer kann sich ein persönliches Interessen-Profil selbst erstellen. So wird er gesondert auf die für ihn interessanten Medien und Informationen hingewiesen. Das persönliche Profil zeigt unter anderem auch entliehene Medien, Fristen und Gebühren. Als weiteren Service kann die Bibliothek automatisch Medien-Listen mit personalisierten Empfehlungen für ihre Benutzer (je nach Interessen-Profil) erstellen. Über eine Verwaltungsoberfläche kann die Bibliothek zudem globale Profile festlegen, mit denen zum Beispiel Erwachsene andere Informationen im Zugriff haben als Kinder oder wiederum andere als Mitarbeiter. Über diese Verwaltungsoberfläche können auch kinderleicht attraktive Informationsquellen (kommentierte Linklisten, gestaltete Informationsseiten [HTML], Veranstaltungskalender, Neuigkeiten, Diskussionsforen etc.) eingebunden und aktualisiert werden. Der Web-Opac Premium lässt sich durch zusätzliche Web-Module erweitern. So zum Beispiel durch WebGate, den Zugang zur DigiBib (Digitale Bibliothek des HBZ), und durch SpiderSearch, den grafischen Assoziativ-Opac. So kann sich jede Bibliothek ihr individuelles »Informationszentrum Bibliothek« bauen. - Weitere Informationen bei BOND, Telefon 0 63 24/9612311, oder E-Mail <vertrieb@ bond-online.de>."

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