EBSCO Discovery Service

Transcription

1 EBSCO Discovery Service Presented By: Shaji John Discovery Innovations and FOLIO Africa, Southeast Asia, South Asia & South Korea 1

2 AGENDA What is Discovery Service Features & Functionalities Client Lists Customized Interfaces Demonstration Questions 2

3 Discovery Service Adoption Worldwide American Libraries May 1, 2015 [Marshall Breeding] EBSCO Discovery Service (EDS) 8,246 installations Primo Central 1,529 installations Summon 697 installations 3

4 Search Engines 4

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7 Empower Users 7

8 Open Relevance Ranking 8

9 Openness About Relevance Algorithm EDS relevance details are open for all customers, potential customers and content providers Truly sophisticated relevance algorithms are not easy to duplicate 9

10 Relevance Ranking 10

11 The first two results provide detailed information about how relevance ranking / value ranking works in EDS 11

12 Relevance Ranking: Quality & Openness The system 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: Matches across multiple metadata fields are favored for relevance scoring (more is better). The scoring influence of repeat terms within individual metadata fields is minimized. 12

13 Relevance Ranking Layered Calculations Term freq / density, scaled fields calc Eg. Weights: Subjects: 15, Title: 10, Keyword: 5, Abstract: 2, Full Text: 1 Tie-breakers / customizers Date recency, article length, publication types (e.g. a peer-reviewed article > book review), etc Exact match boost Score boosted an exact match in a specific field (e.g. Title, of a book) Customer influence, preference Catalog and Institutional Repositories (IRs) Raise or lower relevancy of your specific content 13

14 Value Ranking: Quality & Openness After conducting an unprecedented number of usability studies with undergraduate students, graduate students, and faculty, the following additional emphases were put in place to improve the value of the results for the end user: 14

15 Value Ranking: Quality & Openness RECENCY Recently published content is scored higher for relevance than older content 15

16 Value Ranking: Quality & Openness DOCUMENT TYPE Certain document types are weighted higher than others for relevance scoring For example, when the word book or review is not searched, there is a bias against book reviews, so these don t dominate results 16

17 Value Ranking: Quality & Openness LENGTH Articles of a more substantial length have a heavier weighting (e.g., a ¼ page article is considered less valuable than a 4 page article) 17

18 Problem: Missed Connections TOPICAL QUERY adhd pheromones PET scan gambling addiction Subject Indexing in EDS Attention-deficit hyperactivity disorder Attention deficit disorder with hyperactivity Ectohormones Allelochemicals Semiochemicals Allomones Positron Emission Tomography Tomography, Emission-Computed Emission Tomography Compulsive gambling Pathological Gambling User queries and subject indexing not always aligned. Different vocabularies often use different terminology for the same concept. 18

19 JNU Full Text Downloads has increased after implementation of Discovery Full Text Full Text Projected JNU Usage Full Text Full Text Full Text Updated 8 th January 2017

20 Content Relevance Configurability Interoperability Key criteria for Discovery decision making Focus on Discovery tools and services 21

21 Backend Systems Happy Library Administrators Front-end Discovery - EDS Happy End Users Happy Subject and Reference Librarians Evaluation Criteria Next-Gen ALMA, WMS, Intota, Kuali OLE, Sierra, Blue Cloud VuFind EDS UI LMS Aleph, Symphony, Millennium ERM Ex Libris SFX, PQ SS360, EBSCO FTF Blacklight Koha UI Most Relevant Results Above the Fold Learning Management System (Moodle, etc.) Best user experience, most choice. EDS LMS Partner UI Custom App Best User Experience 22

22 Thai EDS clients 23

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24 EDS Interface Customizations 25

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26 Result Page for ILI 27

27 View Demo MIT LIBRARY THEN 28

28 MIT LIBRARY NOW 29

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32 IIM Bangalore 33

33 IIM Calcutta 34

34 With Library Site Embedded Search Box 35

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36 Demonstration 37

37 No Obligation Free Trial 38

38 Thank You Find out more information at: Shaji John