Search (105 results, page 5 of 6)

  • × theme_ss:"Suchoberflächen"
  • × year_i:[2000 TO 2010}
  1. Marchionini, G.: Toward Human-Computer Information Retrieval (2006) 0.00 
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    Abstract
    This is a propitious time for information science. The WWW has propelled information services into the public eye as never before, and information professionals are sought out in all walks of life to assist people with work, learning and play in the information environment. Classical information retrieval has yielded novel techniques for applying computers to retrieval problems, including WWW search engines. The classical model of retrieval is one of matching queries to documents and ranking these matches. It is apparent, however, that a new model of retrieval is needed as people access large-scale digital libraries of multimedia content and vast collections of unstructured data in the WWW. What is needed are ways to bring human intelligence and attention more actively into the search process. To this end, researchers are beginning to combine the lessons from designing highly interactive user interfaces with the lessons from human information behavior to create new kinds of search systems that depend on continuous human control of the search process. I call this hybrid approach to the challenges of information seeking, human-computer information retrieval (HCIR). Though human-computer information interaction is perhaps a more expansive and appropriate phrase, the HCIR phrase unites two well-known fields/communities of practice and is thus adopted here. HCIR aims to empower people to explore large-scale information bases but demands that people also take responsibility for this control by expending cognitive and physical energy. This paper outlines the basic motivations and concepts of HCIR and presents design goals and challenges that are informed by two ongoing HCIR projects.
    Type
    a
  2. Cyr, D.; Trevor-Smith, H.: Localization of Web design : an empirical comparison of German, Japanese, and United States Web site characteristics (2004) 0.00 
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    Abstract
    To explore issues of user interface design and experience, including culturally preferred design elements, a study was conducted analyzing sites in Germany, Japan, and the United States (30 municipal sites in each country). Design elements considered are use of symbols and graphics, color preferences, site features (links, maps, search functions, and page layout), language, and content. Significant modal differences were found in each of the listed categories. Outcomes from the study are used to discuss future research directions in the areas of experience design and localization.
    Type
    a
  3. Miller, D.H.: User perception and the online catalogue : public library OPAC users "think aloud" (2004) 0.00 
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    Abstract
    The paper presents findings based on user feedback and opinion of online public access catalogues as tools for finding, identifying, and selecting bibliographic materials in a public library setting. Participants spoke their thoughts aloud while conducting known-item searches. The findings describe an iterative process of action, observation, identification, and emotion.
    Content
    1. Introduction Significant research in the design and use of online public access catalogues (OPACs) has been conducted by professionals in library and information science (Borgman, 1996; Carlyle, 2001, Carlyle & Timmons, 2002; Hancock, 1987). However, only limited research has addressed actual library user interaction with and perceptions of online catalogue displays and bibliographic elements (Abrera, 1986; Luk, 1996; Markey, 1983). Retrieval systems, specifically online library catalogues, should consider user perceptions and expectations as an important aspect of design and implementation for improved catalogue efficiency (Hert, 1996). Therefore, it is necessary to examine the online catalogue from a user perspective to determine if it is currently succeeding in meeting the bibliographic needs of users in terms of description, display, navigation, and to provide principles for design of future OPACs. A study seeking to understand better how public library users interact with general OPAC displays and the more specific displays of bibliographic information was conducted in 2003. Research questions focused an 1) user perceptions of the OPAC, 2) the elements in a bibliographic display standing out as most important in selection and identification, and 3) user feedback an the process of using the OPAC. The purpose of this paper is to highlight the larger study findings having implications for future research and online catalogue design.
    Type
    a
  4. Guidelines for Online Public Access Catalogue (OPAC) Displays : Final Report May 2005. Recommended by the IFLA Task Force on Guidelines for OPACD Displays. Approved by the Standing Committee of the IFLA Cataloguing Section (2005) 0.00 
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    Abstract
    Existing Online Public Access Catalogues (OPACs) demonstrate differences in the range and complexity of their functional features, terminology, and help facilities. Many libraries already have OPACs and many of them have a need for guidelines that help them to design or redesign the displays for their OPACs, taking their users' needs into account. This book provides such guidelines, recommendations and a corpus of good practice to assist libraries in this process. The audience for these guidelines is librarians charged with customising OPAC software and vendors and producers of this software. The guidelines are mainly designed for general libraries with collections of resources in the humanities, the social sciences, and the pure and applied sciences. They are intended to apply to any type of catalogue, independently of the kind of interface and technology used. This is the Final Report of a Task Force an the matter, which was approved by the Standing Committee of the IFLA Cataloguing Section.
  5. Tsandilas, T.; Schraefel, M.C.: Usable adaptive hypermedia systems (2004) 0.00 
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    Abstract
    Adaptive interfaces have received much criticism because adaptation and automatic assistance generally contradict the principles of direct-manipulation interfaces. In addition, their success depends highly on the ability of user models to capture the goals and needs of the users. As the construction of user models is often based on poor evidence, even the most advanced learning algorithms may fail to infer accurately the user goals. Previous research has put little emphasis on investigating usability problems of adaptive systems and developing interaction techniques that could resolve these problems. This paper examines these problems and presents an interaction model for adaptive hypermedia (AH) that merges adaptive support and direct manipulation. This approach is built upon a new content adaptation technique that derives from fisheye views. This adaptation technique supports incremental and continuous adjustments of the adaptive views of hypermedia documents and balances between focus and context. By combining this technique with visual representations and controllers of user models, we form a twofold interaction model that enables users to move quickly between adaptation and direct control. Two preliminary user studies exhibit the strengths of our proposed interaction model and adaptation technique. Future extensions to our work are outlined based on the weaknesses and limitations that the studies revealed.
    Type
    a
  6. Zhang, X.; Li, Y.; Liu, J.; Zhang, Y.: Effects of interaction design in digital libraries on user interactions (2008) 0.00 
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    Abstract
    Purpose - This study aims to investigate the effects of different search and browse features in digital libraries (DLs) on task interactions, and what features would lead to poor user experience. Design/methodology/approach - Three operational DLs: ACM, IEEE CS, and IEEE Xplore are used in this study. These three DLs present different features in their search and browsing designs. Two information-seeking tasks are constructed: one search task and one browsing task. An experiment was conducted in a usability laboratory. Data from 35 participants are collected on a set of measures for user interactions. Findings - The results demonstrate significant differences in many aspects of the user interactions between the three DLs. For both search and browse designs, the features that lead to poor user interactions are identified. Research limitations/implications - User interactions are affected by specific design features in DLs. Some of the design features may lead to poor user performance and should be improved. The study was limited mainly in the variety and the number of tasks used. Originality/value - The study provided empirical evidence to the effects of interaction design features in DLs on user interactions and performance. The results contribute to our knowledge about DL designs in general and about the three operational DLs in particular.
    Type
    a
  7. Vilar, P.; Zumer, M.: Perceptions and importance of user friendliness of IR systems according to users' individual characteristics and academic discipline (2008) 0.00 
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    Abstract
    This article presents one part of a wider study, performed at the Department of library and information science and book studies (LIS & BS) at the University of Ljubljana (UL). The study investigated the perceptions of user friendliness of information-retrieval systems (IRS) and the role of individual characteristics of users in these perceptions. Based on an expert study, a user study with 61 postgraduate students of the UL was performed. Three interfaces of e-journals were studied: Science Direct, Proquest Direct, and Ebsco Host. Questionnaires and observations were used for data collection. The users'perceptions of user friendliness and of importance of auxiliary functions were investigated. Also, the connections between these perceptions and the users'individual characteristics were identified. Three sets of individual characteristics were included: approaches to studying, thinking styles, and hemisphere leanings. In connection with the dimensions of individual characteristics, very different perceptions of user friendliness were expressed. Some dimensions of individual characteristics were also found to be connected to the users'academic areas. It is shown that participants from different academic areas have different requirements and perceptions of user friendliness. The results of the study are relevant for the design of the user interfaces of disciplinary IR systems. They also have implications for other areas, for example, user education and training.
    Type
    a
  8. Paternò, F.; Mancini, C.: Effective levels of adaptation to different types of users in interactive museum systems (2000) 0.00 
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    Abstract
    Users interact with museum application interfaces for many reasons. There are various types of users, who want to perform various tasks, in various contexts, that can access the same Web site. Thus, it is important to have user interfaces able to adapt to these different user requirements to facilitate the accomplishment of the desired goals. Most current interfaces to museum information do not take into account this variety of types of users, thus providing interfaces that some users find confusing to achieve their goals. In this article we discuss the various possible levels of support that can be given to different users during navigation of museum information. In particular, we focus our attention on how to obtain adaptable and adaptive interfaces using the web site for the Marble Museum, which we have designed and developed, as a source of examples for our discussion of possible solutions
    Type
    a
  9. Käki, M.; Aula, A.: Controlling the complexity in comparing search user interfaces via user studies (2008) 0.00 
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  10. Heinz, M.; Voigt, H.: Aufbau einer Suchmaschine für ein Forschungsinstitut : Aufgabe für die Bibliothek? (2000) 0.00 
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  11. Thissen, F.: Designempfehlungen für bibliothekarische Web-Sites (2002) 0.00 
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  12. Stock, W.G.; Röttger, M.: ¬Die mittlere Güte von Navigationssystemen : Ein Kennwert für komparative Analysen von Websites bei Usability-Nutzertests (2003) 0.00 
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  13. Helbig, H.; Gnörlich, C.; Leveling, J.: Natürlichsprachlicher Zugang zu Informationsanbietern im Internet und zu lokalen Datenbanken (2000) 0.00 
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    Abstract
    Die Schaffung eines natürlichsprachlichen Interfaces (NLI), (das einem Nutzer die Formulierung von Anfragen an Informationsanbieter in seiner Muttersprache erlaubt, stellt eine der interessantesten Herausforderungen im Bereich des Information-Retrieval und der Verarbeitung natürlicher Sprache dar. Dieser Beitrag beschreibt Methoden zur Obersetzung natürlichsprachlicher Anfragen in Ausdrücke formaler Retrievalsprachen sowohl für Informationsressourcen im Internet als auch für lokale Datenbanken. Die vorgestellten Methoden sind Teil das Informationsrecherchesystems LINAS, das an der Fernuniversität Hagen entwickelt wurde, um Nutzern einen natürlichsprachlichen Zugang zu lokalen und zu im Internet verteilten wissenschaftlichen und technischen Informationen anzubieten. Das LINAS-System unterscheidet sich von anderen Systemen und natürlichsprachlichen Interfaces (vgl. OSIRIS) oder die früheren Systeme INTELLECT, Q&A durch die explizite Einbeziehung von Hintergrundwissen und speziellen Dialogmodellen in den Übersetzungsprozeß. Darüber hinaus ist das System auf ein vollständiges Verstehen des natürlichsprachlichen Textes ausgerichtet, während andere Systeme typischerweise nur nach Stichworten oder bestimmten grammatikalischen Mustern in der Eingabe suchen. Ein besonderer Schwerpunkt von LINAS liegt in der Repräsentation und Auswertung der semantischen Relationen zwischen den in der Nutzeranfrage gegebenen Konzepten
    Type
    a
  14. Schulz, U.: Search engine usability : über die Nutzungsqualität von Suchmaschinen (2001) 0.00 
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    Abstract
    Web Usability konnte sich als Forschungsbereich zunächst nur in größeren Firmen der Internet-Branche wie z. B. Icon Medialab etablieren. Mit zunehmender Konkurrenz und ersten Pleiten im E-Commerce entsteht die Einsicht oder bittere Erfahrung, dass bunte, multimediale Internetpräsenz nicht alles ist: Die Nutzungsqualität von Websites tritt in den Vordergrund und damit ein neuer Arbeitsmarkt für Informationsarchitekten und HCI- bzw. Usability-Spezialisten. Suchmaschinen sind eine besondere Kategorie von Website. Sie entstehen in einem Spannungsfeld zweier unterschiedlicher Interessen: Mit kommerziellen Websites teilen sie den Wettbewerb um Kunden und die Art der Kunden: den ungeduldigen gelegentlichen Anwender. Mit der akademischen Welt teilen sie das forschende Bemühen um die Optimierung von Features und Funktionen und die déformation professionelle der Eingeweihten. Am Beispiel zweier Untersuchungen wird deutlich, wie es der richtige 'Methodenmix' ermöglicht, bei der Evaluation der Nutzungsqualität von Suchmaschinen ganz unterschiedlicher Art (a) diesen Interessenkonflikt bewusst zu machen, (b) Empathie für die Nöte der Kunden zu entwickeln und c) allgemeingültige Kriterien zur Entwicklung gebrauchstauglicher Suchmaschinen aufzustellen. Beide Untersuchungen fanden im Rahmen des Projekts Jorschung und Forschungsumgebung für Web Usability« unter Mitwirkung von Studierenden am Fachbereich Bibliothek und Information der FH Hamburg statt
    Type
    a
  15. Mayer, M.: Kontextvisualisierung : BrowsingIcons and BrowsingGraphs zur Verbesserung der Orientierung und Navigation im World Wide Web (2000) 0.00 
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    Source
    Globalisierung und Wissensorganisation: Neue Aspekte für Wissen, Wissenschaft und Informationssysteme: Proceedings der 6. Tagung der Deutschen Sektion der Internationalen Gesellschaft für Wissensorganisation Hamburg, 23.-25.9.1999. Hrsg.: H.P. Ohly, G. Rahmstorf u. A. Sigel
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  16. Wolff, C.: Leistungsvergleich der Retrievaloberflächen zwischen Web und klassischen Expertensystemen (2001) 0.00 
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