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Theme

Konzeption und Anwendung des Prinzips Thesaurus

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Abstract

In this article, we describe the results of an experiment designed to understand the effects of background information and social interaction on image tagging. The participants in the experiment were asked to tag 12 preselected images of Jewish cultural heritage. The users were partitioned into three groups: the first group saw only the images with no additional information whatsoever, the second group saw the images plus a short, descriptive title, and the third group saw the images, the titles, and the URL of the page in which the image appeared. In the first stage of the experiment, each user tagged the images without seeing the tags provided by the other users. In the second stage, the users saw the tags assigned by others and were encouraged to interact. Results show that after the social interaction phase, the tag sets converged and the popular tags became even more popular. Although in all cases the total number of assigned tags increased after the social interaction phase, the number of distinct tags decreased in most cases. When viewing the image only, in some cases the users were not able to correctly identify what they saw in some of the pictures, but they overcame the initial difficulties after interaction. We conclude from this experiment that social interaction may lead to convergence in tagging and that the wisdom of the crowds helps overcome the difficulties due to the lack of information.

Source

Journal of the American Society for Information Science and Technology. 61(2010) no.5, S.940-951

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Abstract

The use of the title as a source of information about books in library catalogs and as a device for retrieval has undergone many changes over time. The paper touches on its historical development, described the impact of technological changes, and analyzed the impact of the computers on the informativity of titles. Also, the differences between Western and Eastern cultures regarding use of title is described

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Abstract

Arguments in favor of using classification numbers for subject access are discussed. A survey of online catalog users of the Israeli academic libraries (the ALEPH system), together with monitoring of user transactions of this system revealed almost no use of classification numbers as an access point; the basic reason being that users do not understand the meanings of the codes. Also, it is maintained that monographs, in which much activity is invested, are not our main source of information, and stet the use of the online catalog for subject search in any case declines over time. Therefore, it is suggested that resources be channeled in other directions