clive wright senior director of discovery products for europe and latin america
TRANSCRIPT
Clive Wright
Senior Director of Discovery Products for Europe and Latin America
Web Scale Discovery: Abbr. Def.
WSD systems couple… a pre-harvested central index of metadata and
content…… with a richly featured
discovery layer.
5 Sept 2013 2
Resource Discovery Services Athena Hoeppner
University of Central Florida
Display
Que?
Catalog
Metadata and
Content
Special Collections
Search algorithm
Central Index
Catalog
Metadata and
Content
Special Collections
Foundation Index
Knowledge Base
Pre-harvested Index
WSD/Vendor Agreements
Publisher Supplied
Library Subs
Open Access FT
and A/I
Library Supplied
Pre-harvested Index
CENTRAL INDEX
5 Sept 2013 5Resource Discovery Services | Athena Hoeppner
Fast, simple access to the library’s full-text content (electronic and print)
in a single search box
As well as…Your Library Catalog & Institutional Repositories
• Journals
• Conference Proceedings
• Magazines
• Newspapers
• Books
• Monographs
• Images
• Audio
• Video
Display
Discovery Layer
Search algorithm
How venture capital works.A u t h o r : C h r i s t i a n S c i e n c e M o n i t o r ( 1 9 0 8 - C u r r e n t fi l e ) I SS N : 0 1 4 5 - 8 0 2 7 D a t e : 0 3 / 1 1 / 1 9 8 5 D e s c r i p t i o n : 1 7
Search: Venture
YU Library | Ask |Reserves | ILL | Your Account
700,000 hits Sort: Relevancy
Dates1859 <- > 2011
TypeArticleBookElectronic
…more
SubjectFinanceGeneticsBrothers
…more
Library Main
A
The Venture cloning method.A u t h o r : -T h a d i u s S . Ve n t u r eI S B N : 0 1 - 0 0 4 5 - 8 0 2 D a t e : 2 0 0 8B
Full Text
Super Science LibraryQH 442 V7 2008 Due: Yesterday!!
Go
Full Featured Discovery Layer
5 Sept 2013 8Resource Discovery Services | Athena Hoeppner
A discovery tool that is not discovering relevant content is worse than having no discovery tool
But is it relevant?
A discovery tool finding relevant content will improve results, speed up searches,
use fewer clicks and increase usage of themost important content
Evaluating the Central Index
• Is the indexed content a good fit?– Inclusion of your journals titles and
holdings– Inclusion of your subscribed databases
• Richness of metadata• Ability to incorporate desired content
in the future
5 Sept 201310
Resource Discovery Services Athena Hoeppner
University of Central Florida
“If PsycINFO were included in discovery services, users could believe that they are actually searching the database, when, in truth, they would only be
scratching the surface. We do not wish to contribute to such a misperception.”
-Linda Beebe, Senior Director,
PsycINFO
Stakeholders Strive to Define Standards
for Web-Scale Discovery SystemsBy Michael Kelley on October 11, 2012
“EDS is the only one that is integrated
with a delivery (of PsycINFO)”
-Linda Beebe, Senior Director,
PsycINFO
EDS Record
Primo Central Record
Analyzing the Impact of Inclusion of a Major Subject Index
NOTE: In Summon, the following expander was employed to increase results: “Add Results Beyond Your Library’s Collection”In Primo Central, the following expander was employed to increase results: “Include items not owned by the library”
Searches conducted on April 25, 2013
QUERY (in quotes to avoid false hits)
Peer-ReviewedResults in
Primo Centralvia Vanderbilt
Peer-ReviewedResults in
Summon viaDartmouth
Peer-ReviewedResults in
WorldCat Local via UC Davis
Peer-ReviewedResults in
EDS via UGA(without
PsycINFO)
Peer-ReviewedResults in
EDS via UGA(with PsycINFO)
“Nonprojective Personality Measures” 0 2 0 111 1,129
“Vietnamese Cultural Groups” 0 0 0 15 287
“Clinical Methods Training” 7 7 3 402 3,087
NOTE: When retrieving zero results for adjacency searches, the Primo Central search engine sometimes ignores the quotation marks and returns a non-adjacency result list.
Display
Discovery Layer
Search algorithm
Evaluating the Discovery Layer
• Is it a good fit for your content?• Is it a good fit for how your users
search?• Does it integrate with your other
services?
205 Sept 2013
Resource Discovery Services Athena Hoeppner
University of Central Florida
Relevancy and Value Ranking
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Resource Discovery Services Athena Hoeppner
University of Central Florida
Relevancy is extremelyimportant and hard to pindown.
• The central index is a BIG pile of hay.
• The search and refinement tools are rakes
• The relevancy ranking is a magnet.
Relevancy and Value Ranking
• Weighted fields• Exact match of term
with field• Density of terms• Currency of item• Document type• Document length• Locally owned
225 Sept 2013
Resource Discovery Services Athena Hoeppner
University of Central Florida
Relevance RankingEDS has the following priorities and has
no bias toward content from any provider:
1) Match on subject headings from controlled vocabularies
2) Match on article titles
3) Match on author keywords
4) Match on keywords within abstracts
5) Match on keywords within full text
Exact Matches: Exact matches are favored over partial matches – considering also the field in which those words appear (abstract vs. full text vs. title, etc.)
Density: The number of times the word(s) appears relative to the size of
the document (more is better) – considering also the field in which those words appear (abstract vs. full text vs. title, etc.)
Superior Value Ranking
Currency: When relevance is equal,
the more recent journal articles rank higher
Superior Value Ranking
Document Type: In relation to the search terms,
document types may be relegated to lower relevance
For example, when the word “book” or “review” is not searched,
there is a “bias” against book reviews,
so these don’t dominate results
Superior Value Ranking
Length: Articles of a more substantial length
have a heavier weighting (e.g., when relevance is equal, a ¼ page article is
considered less valuable than a 4 page article)
Superior Value Ranking
Usage of library content Goes Up with Discovery, but…
…which content types experience an increase in usage
depends on which discovery service is exposed to your end
users
University of North Florida (USA) reported an increase in ScienceDirect usage of 247%
due to the implementation of EDS (previous year only 11%)
Case Study:EDS Increases Usage of a Top Publisher’s Journals
Bournemouth University (UK) reported an increase in ScienceDirect link-outs of 547%
over the previous year without EDS
Picking a WSD and Making It Yours
1. Know what you want to do with the service.
2. Pick the central index that aligns with your content and has the metadata to support discovery. Turn data sources on or off to focus the index for your users.
3. Pick a discovery layer that can surface the content your users want to find and that facilitates search behavior you want to promote.
305 Sept 2013
Resource Discovery Services Athena Hoeppner
University of Central Florida
