ContextObjects in Spans (COinS) is a method to embed bibliographic metadata in the HTML code of web pages. This allows bibliographic software to publish machine-readable bibliographic items and client reference management software to retrieve bibliographic metadata. The metadata can also be sent to an OpenURL resolver. This allows, for instance, searching for a copy of a book at a specific library.[1]
An example of referrers acting on a wikipedia article using citation templates with embedded COinS tags
In the late 1990s, OpenURL was created at Ghent University as a framework to provide context-sensitive links. The OpenURL link server implementation called SFX was sold to Ex Libris Group which marketed it to libraries, shaping the idea of a "link resolver". The OpenURL framework was later standardized as ANSI/NISO Z39.88 in 2004 (revised 2010).[2] A core part of OpenURL was the concept of "ContextObjects" as metadata to describe referenced resources.
In late 2004, Richard Cameron, the creator of CiteULike, drew attention to the need for a standard way of embedding metadata in HTML pages.[3] In January 2005, Daniel Chudnov suggested the use of OpenURL.[4] Embedding OpenURL ContextObjects in HTML had been proposed before by Herbert Van de Sompel and Oren Beit-Arie[5] and a working paper by Chudnov and Jeremy Frumkin.[6] Discussion of the latter on the GPS-PCS mailing list[7] resulted in a draft specification for embedding OpenURLs in HTML,[8] which later became COinS. A ContextObject is embedded in an HTML span element.
The adoption of COinS was pushed by various publications and implementations. The specification was OCOinS.info, which includes specific guides to implement COinS for journal articles and books.[9]
From OpenURL 1.0 COinS borrows one of its serialization formats ("KEV") and some ContextObject metadata formats included in OpenURL implementation guidelines.[10] The ContextObject implementation guidelines of COinS include four publication types (article with several subtypes, book, patent, and generic) and a couple of simple fields. However, the guidelines are not required part of COinS, so the standard does not provide a strict metadata model like Dublin Core or the Bibliographic Ontology.
Ashmore, Beth; Grogg, Jill E. (2006). "Google and OCLC open libraries on the Open Web". Searcher. 14 (10). Medford, New Jersey: Learned information: 44–53. ISSN1070-4795. GaleA154562387.
Bailey, Annette; Back, Godmar (2008-02-29). "Retrieving known items with LibX". The Serials Librarian. 53 (4): 125–140. doi:10.1300/J123v53n04_09. ISSN0361-526X.
Chudnov, Daniel; England, Deberah (2008-05-19). "A new approach to library service discovery and resource delivery". The Serials Librarian. 54 (1–2): 63–69. doi:10.1080/03615260801973448. ISSN0361-526X.
Lagace, Nettie; Chisman, Janet K. (2007-06-26). "How did we ever manage without the OpenURL?". The Serials Librarian. 52 (1–2): 211–222. doi:10.1300/J123v52n01_17. ISSN0361-526X.
MacIntyre, Ross (2006). OpenURL and COinS. SRU Implementors Group, Koninklijke Bibliotheek, The Hague, March 3, 2006. Archived from the original on 2006-03-13. Abstract
Min, Gao; Yuling, Jin; Weiling, Liu (2008). "The development and innovative uses of OpenURL research". Data Analysis and Knowledge Discovery (in Chinese). 24 (2): 87–90. doi:10.11925/infotech.1003-3513.2008.02.16.
O'Riordan, Adrian (2014-06-22). "Open search environments: The free alternative to commercial search services". Information Technology and Libraries. 33 (2): 45–60. doi:10.6017/ital.v33i2.4520. ISSN2163-5226.
Pace, Andrew K. (September 2005). "If you can't beat 'em, join 'em". Technically speaking. American Libraries. 36 (8): 78–79. JSTOR25649697.
Palmer, James D. (2007-03-11). "Exploiting bibliographic web services with CiTeX". Proceedings of the 2007 ACM symposium on Applied computing. ACM. pp.1673–1676. doi:10.1145/1244002.1244356. ISBN978-1-59593-480-2.
