created systems like Wikipedia (Dempsey, 2012). As the largest library cooperative, OCLC has undertaken several collaborative partnerships between Wikipedia and libraries, such as the Wikipedia Visiting Scholar program and Project Passage (OCLC Research, 2020). OCLC has also urged catalogers to “integrate researchers’ external IDs within library applications and services as appropriate” to facilitate the creation of high-quality linked data between resources (Smith-Yoshimura et al., 2014).
In recent years libraries have undertaken attempts to integrate the library’s catalog data into the larger web environment for discoverability purposes. An additional goal for libraries is to share and benefit from knowledge created by larger community-based open systems, platforms, and hubs such as Google Search, Wikipedia, Amazon, LibraryThing, and Google Books, by bringing them into the library catalog setting (Dempsey, 2012). The open-source library catalog, VuFind, offers optional features that allow users to view rich linked data content, such as author biographies via Wikipedia (VuFind 4.1 Milner Library, 2020). Similarly, to improve the quality of services for both libraries and Wikipedia, Joorabchi and Mahdi (2018) designed a software system for automatic mapping of FAST subject headings that are used to index library materials to their corresponding articles in Wikipedia. Charting connections between the library catalog and other open systems, such as Wikipedia, creates a need for the implementation of linked data elements. The merging of data from different systems and its many descriptive forms under one discovery layer calls for linked data approaches so that the resources may be discoverable based on common entities and identifiers (Dempsey, 2012).
Both libraries and Wikipedia generate projects that allow users to refine searches with facets, lists, and categories. In 2013, the Library of Congress began exploring the creation of the Library of Congress Demographic Group Terms (LCDGT)-controlled vocabulary (Library of Congress, Policy and Standards Division, 2020). rough inclusion of new MARC fields in bibliographic records, the terms would allow catalogers to describe intended audiences and the creators of works. Library of Congress Subject Headings (LCSH) and their subdivisions
