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IT-SIG Unconference Discovery Layers

Page history last edited by Kim Salamonson 7 years, 4 months ago

Discovery Layers

A preharvested central index coupled with a richly featured discovery layer providing a single search across a library’s local, open access, and subscription collections” (Hoeppner 2012).

Discovery Layer allows a user to search across a library catalogue (or several), an ebook platform (or several), and a source of articles (or several).
A Discovery Layer could make use of one or more combinations of the following:Federated Searching a query is distributed to multiple sources, and responses are compiled,
de-duped, and returnede.g. Sirsi Single Search Metasearching a single, regularly complied index is created from the collection of metadata from multiple sourcese.g. Endeca,
GoogleSingle host environment metadata and content are placed on a common servere.g. WorldCat, Ontario Scholars PortalFrom http://www.newjackalmanac.ca/2008/03/ontario-scholars-portal-yours-to.html
Checkout Marshall Breeding website   http://www.librarytechnology.org/discovery.pl

If you are unfamiliar with discovery layers, check out my short introductory powerpoint, which will give you framework

Do they search everything, in-house databases, online databases EPIC etc? As it stands, the central index will not (/never?) include absolutely everything. In some cases, this involves a conscious decision not to include particular content that we determine to be inappropriate in this ’search everything’ environment. For example, highly subject-specific/ niche databases might be a poor fit for a discovery layer & only serve to confuse your users. Tough call. In other cases, it is because certain vendor platforms will not play nicely with databases from their competitors.

Do they search e-book consortia Some do check with your vendor Does anyone catalogue their e-books? Well with the next generation discovery layer you won’t have too.


Discovery Layer search engines include:







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