Search (38 results, page 2 of 2)

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Source

Information - Wissenschaft und Praxis. 53(2002) H.8, S.457-460

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Source

Information - Wissenschaft und Praxis. 54(2003) H.6, S.341-344

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Date

12. 8.2012 18:05:22

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Abstract

Allowing the description of the structure of documents has been one of the key factors for the success of the hypertext markup language (HTML) family of markup languages. This capability has motivated the phenomenon that has become known as the World Wide Web (the "Web"). The next generation of the Web, known as the Semantic Web (Berners-Lee, Hendler. & Lassila, 2001), aims at describing the meaning rather than the structure of data, adding more intelligent search, retrieval, and other agent functionalities to the Web, and tools that make the implementation of this Semantic Web possible are greatly needed. The increasing availability of multimedia on the World Wide Web makes metadata description efforts for multimedia a pressing need, yet with the volume of content being created, often only a rudimentary description of the multimedia content is available. In addition, the digital mode entails a host of other descriptive needs, such as the format, factors such as compression and transmission, and issues such as copyright restrictions and terns for usage. Thus, new and efficient ways of describing multimedia content and meaning are needed as well as a structure that is capable of carrying such descriptions. Several attempts have been made to grapple with this issue using descriptive metadata, one of the earliest of which was the revision of the Dublin Core to ascertain essential features necessary to resource discovery of visual items in a networked environment (Weibel & Miller, 1997). Other metadata schemes, such as the Visual Resources Association Core Categories (http://www.vraweb.org/vracore3.htm), also include format information necessary to the use and display of digital images.

Source

Journal of the American Society for Information Science and Technology. 58(2007) no.9, S.1323-1328

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Abstract

This article discusses the implementation of MPEG-7 within the Moving Image Collections (MIC) portal. MIC is a union catalog of the world's moving images, as well as a portal to information on the care, management, and use of moving images. The MIC Union Catalog utilizes a core registry schema that is designed to map readily to any metadata schema used to describe moving images. The MIC development team was particularly interested in supporting MPEG-7 for future nontextual digital video indexing applications. An MPEG-7 application profile and Microsoft Access cataloging utility were developed in order to test MPEG-7 within the MIC Union Catalog; 400 science digital videos in the ResearchChannel collection were cataloged in MPEG-7. The MPEG-7 records were mapped to MIC and ingested. Draft MPEG-7 to MIC and MIC to MPEG-7 maps were developed and are available at the MIC Web site. MPEG-7 records are available for viewing for any record in the MIC database via a collections explore search within the Archivists' portal. The MPEG-7 cataloging utility may be downloaded from the MIC project Web site (Moving Image Collections. MIC Cataloging Utility. http://gondolin.rutgers.edu/MIC/text/ how/cataloging_utility.htm). This article also discusses issues with MPEG-7 as a descriptive metadata schema, as well as mapping and implementation issues identified in the project.

Source

Journal of the American Society for Information Science and Technology. 58(2007) no.9, S.1357-1363

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Abstract

Searching for multimedia is an important activity for users of Web search engines. Studying user's interactions with Web search engine multimedia buttons, including image, audio, and video, is important for the development of multimedia Web search systems. This article provides results from a Weblog analysis study of multimedia Web searching by Dogpile users in 2006. The study analyzes the (a) duration, size, and structure of Web search queries and sessions; (b) user demographics; (c) most popular multimedia Web searching terms; and (d) use of advanced Web search techniques including Boolean and natural language. The current study findings are compared with results from previous multimedia Web searching studies. The key findings are: (a) Since 1997, image search consistently is the dominant media type searched followed by audio and video; (b) multimedia search duration is still short (>50% of searching episodes are <1 min), using few search terms; (c) many multimedia searches are for information about people, especially in audio search; and (d) multimedia search has begun to shift from entertainment to other categories such as medical, sports, and technology (based on the most repeated terms). Implications for design of Web multimedia search engines are discussed.

Source

Journal of the American Society for Information Science and Technology. 60(2009) no.9, S.1756-1768

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Source

Journal of the American Society for Information Science and technology. 52(2001) no.11, S.954-960

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Journal of the American Society for Information Science and Technology. 58(2007) no.9, S.1364-1366

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Source

Information Research & Content Management: Orientierung, Ordnung und Organisation im Wissensmarkt; 23. DGI-Online-Tagung der DGI und 53. Jahrestagung der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis e.V. DGI, Frankfurt am Main, 8.-10.5.2001. Proceedings. Hrsg.: R. Schmidt

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Source

Journal of the American Society for Information Science and Technology. 58(2007) no.9, S.1338-1345

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Source

Journal of the American Society for Information Science and Technology. 58(2007) no.9, S.1329-1337

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Source

Journal of the American Society for Information Science and Technology. 58(2007) no.9, S.1346-1356

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Source

Journal of the American Society for Information Science and Technology. 58(2007) no.9, S.1374-1376

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Source

Information processing and management. 44(2008) no.1, S.340-357

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Abstract

Relevance has been a difficult concept to define, let alone measure. In this paper, a simple operational definition of relevance is proposed for a Web-based library catalog: whether or not during a search session the user saves, prints, mails, or downloads a citation. If one of those actions is performed, the session is considered relevant to the user. An analysis is presented illustrating the advantages and disadvantages of this definition. With this definition and good transaction logging, it is possible to ascertain the relevance of a session. This was done for 905,970 sessions conducted with the University of California's Melvyl online catalog. Next, a methodology was developed to try to predict the relevance of a session. A number of variables were defined that characterize a session, none of which used any demographic information about the user. The values of the variables were computed for the sessions. Principal components analysis was used to extract a new set of variables out of the original set. A stratified random sampling technique was used to form ten strata such that each new strata of 90,570 sessions contained the same proportion of relevant to nonrelevant sessions. Logistic regression was used to ascertain the regression coefficients for nine of the ten strata. Then, the coefficients were used to predict the relevance of the sessions in the missing strata. Overall, 17.85% of the sessions were determined to be relevant. The predicted number of relevant sessions for all ten strata was 11 %, a 6.85% difference. The authors believe that the methodology can be further refined and the prediction improved. This methodology could also have significant application in improving user searching and also in predicting electronic commerce buying decisions without the use of personal demographic data

Source

Journal of the American Society for Information Science and technology. 52(2001) no.10, S.829-830

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Source

Information und Öffentlichkeit: 1. Gemeinsamer Kongress der Bundesvereinigung Deutscher Bibliotheksverbände e.V. (BDB) und der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis e.V. (DGI), Leipzig, 20.-23.3.2000. Zugleich 90. Deutscher Bibliothekartag, 52. Jahrestagung der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis e.V. (DGI). Hrsg.: G. Ruppelt u. H. Neißer

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Abstract

Ein Problem der Erstellung von Multimediaanwendungen in Unternehmen ist, dass die Sachkompetenz bezüglich der darzustellenden Inhalte nicht immer bei denjenigen Mitarbeitern liegt, die die Kompetenz für die mediengerechte Aufbereitung haben. Um umfangreiche Hypertextanwendungen - ggf. auch mit interaktiven Aufgaben Lind Multimediaelernenten - zu erzeugen, können Sachautoren von dem Umgang mit Multimediasoftware weitgehend entlastet werden. Der von den Sachautoren verfasste Text ist dazu von vornherein mit minimalen Textauszeichnungen zu versehen. Dazu braucht er seine Textverarbeitung nicht zu verlassen. Um jetzt einen interaktiven Hypertext oder eine 1 lypermediaanwendung mit einzelnen Einträgen und zusätzlichen umfangreichen Navigationskomponenten zu erzeugen und weitere Medien an den jeweils richtigen Stellen einzufügen, ist ein Programm erforderlich, das die Anwendung erzeugen hilft (Engine). Zu den Themen "Hypertext" und "Multimedia" erscheinen etliche Publikationen. Eine Vielzahl von ihnen hat theoretische und konzeptionelle Aspekte zum Inhalt (z. B. Lobin 1999, Brusilovsky 1998, Rouet 1996). Manche betonen den Anwendungsbezug (Gerdes 1997, Hofinann/Simon 1995), der unter besonderer Berücksichtigung für Information oder Ausbildung gesehen werden kann (vgl. Glowalla 1992). Andere sind von historischem Interesse (Nelson 1992), klären die Begrifflichkeit und die Grundlagen (Schnupp 1992, Kuhlen 1991, Seyer 1991, Nielsen 1990, Hashim 1990) oder geben Hinweise auf die Benutzung (MacGrew 1989). Ferner gibt es programmspezifische Literatur, die die technische Handhabung bei der Erstellung unterstützt. Solche Literatur kann genutzt werden, um Aspekte zu gewinnen, die für die Anlage und Ausrichtung einer Hypertextanwendung sinnvoll sind. Werden hingegen existierende Hypertextanwendungen betrachtet, so bleibt der damit verbundene Aufwand und die Organisationsstruktur oft im Dunkeln

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Source

Information - Wissenschaft und Praxis. 58(2007) H.5, S.261-262