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Jörgensen, C.; Liddy, E.D.: Information access or information anxiety? : an explanatory evaluation of book index features (1996)
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- Abstract
- The authors conducted a controlled user study in both print and electronic environments and present here a subset of results from index use in the print format
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Jörgensen, C.; Jaimes, A.; Benitez, A.B.; Chang, S.-F.: ¬A conceptual framework and empirical research for classifying visual descriptors (2001)
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- Abstract
- This article presents exploratory research evaluating a conceptual structure for the description of visual content of images. The structure, which was developed from empirical research in several fields (e.g., Computer Science, Psychology, Information Studies, etc.), classifies visual attributes into a "Pyramid" containing four syntactic levels (type/technique, global distribution, local structure, composition), and six semantic levels (generic, specific, and abstract levels of both object and scene, respectively). Various experiments are presented, which address the Pyramid's ability to achieve several tasks: (1) classification of terms describing image attributes generated in a formal and an informal description task, (2) classification of terms that result from a structured approach to indexing, and (3) guidance in the indexing process. Several descriptions, generated by naive users and indexers, are used in experiments that include two image collections: a random Web sample, and a set of news images. To test descriptions generated in a structured setting, an Image Indexing Template (developed independently over several years of this project by one of the authors) was also used. The experiments performed suggest that the Pyramid is conceptually robust (i.e., can accommodate a full range of attributes), and that it can be used to organize visual content for retrieval, to guide the indexing process, and to classify descriptions obtained manually and automatically
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D'Elia, G.; Jörgensen, C.; Woelfel, J.; Rodger, E.J.: ¬The impact of the Internet on public library use : an analysis of the current consumer market for library and Internet sources (2002)
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- Abstract
- The potential impact of the Internet an the public's Jemand for the services and resources of public libraries is an issue of critical importance. The research reported in this article provides baseline data concerning the evolving relationship between the public's use of the library and its use of the Internet. The authors developed a consumer model of the American adult market for information services and resources, segmented by use (or nonuse) of the public library and by access (or lack of access) to, and use (or nonuse) of, the Internet. A national Random Digit Dialing telephone survey collected data to estimate the size of each of six market segments, and to describe their usage choices between the public library and the Internet. The analyses presented in this article provide estimates of the size and demographics of each of the market segments; describe why people are currently using the public library and the Internet; identify the decision criteria people use in their choices of which provider to use; identify areas in which libraries and the Internet appear to be competing and areas in which they appear to be complementary; and identify reasons why people choose not to use the public library and/or the Internet. The data suggest that some differentiation between the library and the Internet is taking place, which may very well have an impact an consumer choices between the two. Longitudinal research is necessary to fully reveal trends in these usage choices, which have implications for all types of libraries in planning and policy development.
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Jörgensen, C.: Still image indexing (2009)
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Jörgensen, C.; Jörgensen, P.: Citations in hypermedia : maintaining critical links (1991)
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Jörgensen, C.: ¬The applicability of selected classification systems to image attributes (1996)
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Jörgensen, C.: Unlocking the museum : a manifesto (2004)
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Jörgensen, C.; Jörgensen, P.: Image querying by image professionals (2005)
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Rising III, H.K.; Jörgensen, C.: Semantic description in MPEG-7 : the rich recursion of ripeness (2007)
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Jörgensen, C.; Stvilia, B.; Wu, S.: Assessing the relationships among tag syntax, semantics, and perceived usefulness (2014)
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Jörgensen, C.: ¬The MPEG-7 standard : multimedia description in theory and application (2007)
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Stvilia, B.; Jörgensen, C.: Member activities and quality of tags in a collection of historical photographs in Flickr (2010)
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Huang, H.; Stvilia, B.; Jörgensen, C.; Bass, H.W.: Prioritization of data quality dimensions and skills requirements in genome annotation work (2012)
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Huang, H.; Jörgensen, C.: Characterizing user tagging and Co-occurring metadata in general and specialized metadata collections (2013)
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Jörgensen, C.: Image access : introduction and overview (2001)
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Jörgensen, C.: Image retrieval : theory and research (2003)
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