In library science, authority control is a process that organizes library catalog and bibliographic information by using a single, distinct name for each topic. The word authority in authority control derives from the idea that the names of people, places, things, and concepts are authorized, i.e., they are established in one particular form. These one-of-a-kind headings are applied consistently throughout the catalog, and work with other organizing data such as linkages and cross references. Each heading is described briefly in terms of its scope and usage, and this organization helps the library staff maintain the catalog and make it user-friendly for researchers. Cataloguers assign each subject—such as an author, book, series or corporation—a particular unique heading term which is then used consistently, uniquely, and unambiguously to describe all references to that same subject, even if there are variations such as different spellings, pen names, or aliases. The unique header can guide users to all relevant information including related or collocated subjects. Authority records can be combined into a database and called an authority file, and maintaining and updating these files as well as "logical linkages" to other files within them is the work of librarians and other information cataloguers. Accordingly, authority control is an example of controlled vocabulary and of bibliographic control. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video

• published: 01 Oct 2014
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