Building a Library Knowledge Graph: Using Linked and ...
Transcript of Building a Library Knowledge Graph: Using Linked and ...
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Building a Library Knowledge Graph:Using Linked and Structured Data for Web-Scale Discovery of Library People, Resources, and Services
Jason A. ClarkAssociate ProfessorHead, Library Informatics & ComputingMontana State University (MSU) Library
Dartmouth College LibraryMarch 30, 2017
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pinboard.in tag
pinboard.in/u:jasonclark/t:lod/
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Overview
• What is a library knowledge graph?• Discovery and Machine Definitions• Linked, structured data• Web-scale Cataloging• Case Study: Linked Resources• Questions
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What happens to libraries and librarians when machines can
read all the books?
Chris Bourg, Director of Libraries at MIT
https://chrisbourg.wordpress.com/2017/03/16/what-happens-to-libraries-and-librarians-when-machines-can-read-all-the-books/
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What if we considered how to make this happen in our
everyday work?
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Can we create a Machine UX?
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A Collection?
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Or a network of sources, people, and services?
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A Library Knowledge Graph
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An Expression of “Librariness”
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The People
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The Resources
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The Services
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This network or graph can be expressed and encoded into our
web site.
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Discovery
Web-scale cataloging
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SEO + Semantic Understanding
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"Search engines continue to dominate, topping the list of electronic sources most used to find online content (93%), followed closely by Wikipedia (88%). The key difference in usage between search engines and Wikipedia is the frequency - 75% of students who use search engines do so daily, compared to 20% of those who use Wikipedia."
Perceptions of Libraries, 2010: Context and Community: a Report to the OCLC Membership. OCLC, 2011.http://www.oclc.org/content/dam/oclc/reports/2010perceptions/2010perceptions_all_singlepage.pdfhttp://www.oclc.org/content/dam/oclc/reports/2010perceptions/collegestudents.pdf
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A Library Knowledge Graph at Montana State University (MSU)
Library
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Nodes in the Graph
1. Linked Resources (Open SESMO)
2. Linked People
3. Linked Digital Collections
4. Linked Services (pilot)
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Machine Definitions
Library Things as Semantic Entities
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How are people, resources, and services understood?
By machines and by humans
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Applying the concept of linked data for our local community Finding a real-world use-case for graph modeling using open source tools
What if our people, resources, and services could be discovered and understood?
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A Case StudyBy machines and by humans
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Open SESMOLinked Resources
Using Linked Data to Reshape the Library Database List
www.lib.montana.edu/resources
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Search Engine Optimization
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Social Media Optimization
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Linked, Structured Data
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The Experiment
● Same collection● Apply optimizations in stages● Compare analytics over time● Goal: increased traffic and more nuanced,
semantic understanding of content by search engines
www.lib.montana.edu/resources
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Wait, what… how?
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New Markup and Website Architecture
1. Codify the relationship between the pages using the isPartOf and Web Page entity types of CollectionPage, ItemPage, and AboutPage from Schema.org.
2. Establish each item page for a library database or resource as a Product entity using the Product type from Schema.org.
3. Encode subject and topic vocabularies into all relevant pages for humans and machines using the External Enumerations (https://www.w3.org/wiki/WebSchemas/ExternalEnumerations), an extension that allows for external vocabularies to be encoded and referenced in an HTML page.
4. Establish URL patterns, set identifiers, and set canonical URL patterns along with XML sitemap for indexing.
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Optimized Pages● Collection Page [home page]
○ www.lib.montana.edu/resources/
● About Pages [about page, topics page]○ www.lib.montana.edu/resources/about.php○ www.lib.montana.edu/resources/topics.php
● Item Pages [individual record page]○ www.lib.montana.edu/resources/about/31
● Sitemap and rel=canonical work○ www.lib.montana.edu/resources/sitemap.xml
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https://schema.org/CollectionPage, http://schema.org/AboutPage, https://schema.org/ItemPage
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https://schema.org/CollectionPage, http://schema.org/AboutPage, https://schema.org/ItemPage
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https://schema.org/CollectionPage, http://schema.org/AboutPage, https://schema.org/ItemPage
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https://www.lib.montana.edu/resources/about/238
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External Enumerations"We define here some specific integration points through which selected externally maintained vocabulary can be published as part of schema.org markup"
www.w3.org/wiki/WebSchemas/ExternalEnumerations
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Wikipedia (DBpedia) as a Controlled Vocabulary
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additionalTypes, category
https://schema.org/additionalType, http://schema.org/specialty
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Technical SEO:Sitemap and rel=canonical
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Sitemap - https://www.lib.montana.edu/resources/sitemap.xml
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<link rel="canonical" href="https://www.lib.montana.edu/resources/about/116" />
Further reading:Using Canonical URLShttps://support.google.com/webmasters/answer/139066
Establish Preferred URL for Indexing
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Social Media Optimization
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Twitter Card and Facebook Open Graph Tagging
<!--Begin social media tags and metadata--><meta name="twitter:title" content="Art Abstracts"><meta name="twitter:description" content="Art Abstracts - Montana State University (MSU) Library"><meta name="twitter:image:src" content="http://www.lib.montana.edu/resources/meta/img/screenshots/14.jpg"><meta name="twitter:url" content="http://www.lib.montana.edu/resources/about/14"><meta name="twitter:card" content="summary_large_image"><meta name="twitter:site" content="@msulibrary"><meta name="twitter:creator" content="@msulibrary"><meta property="og:title" content="Art Abstracts"><meta property="og:description" content="Art Abstracts - Montana State University (MSU) Library"><meta property="og:image" content="http://www.lib.montana.edu/resources/meta/img/screenshots/14.jpg"><meta property="og:url" content="http://www.lib.montana.edu/resources/about/14"><meta property="og:type" content="website" /><meta property="og:site_name" content="Art Abstracts - Montana State University (MSU) Library"/><!-- End social media tags and metadata -->
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Results
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Semantic Understandings
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Database Recommendations
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Search Engine Result Pages
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Social Media Analytics
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Organic Search Statistics
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Initial snapshot
August 16, 2015 to September 12, 2015versus
September 13, 2015 to October 10, 2015
13,881 total impressions to 54,172 total impressions
“Clickthrough Rates” and “Search Position” show growth
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User Growth
August 22, 2014 to November 4, 2016
Total users (audience - overview)
2014 - 11,8332015 - 13,1282016 - 24,657
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Organic Search Growth
August 22, 2015 to March 29, 2016
Search/Referrals for all resource pages (acquisition - source/medium)
68,742 sessions to
78,986 sessions
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Organic Search Growth
August 22, 2014 to November 4, 2016
Search/Referrals for about/item pages (acquisition - source/medium)
2014 - 942015 - 3,6592016 - 3,580
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Overall Page Metrics
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Item Pages
August 24, 2015 to March 29, 2016(compared to previous year)
185 total impressions to
10,200 total impressions
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Item Pages
August 22, 2014 to November 4, 2016
2014 - 2,9242015 - 7,807
2016 - 13,191
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Item Pages - Exit Rates
August 22, 2014 to November 4, 2016
Pages per/session decreaseand
3% to 45% to 50% exit rate
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What about those other nodes in the graph?
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Linked Data is People
Using Linked Data to Reshape the Library Staff Directory
www.lib.montana.edu/people
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http://www.lib.montana.edu/people/about/47#person
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JJan Zauha is defined/understood as an entity
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Similar Impact and Results
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“Google Analytics reporting shows an increase in key metrics for our staff directory when comparing the Fall academic term of 2013 (August 26-December 13) with the Fall academic term of 2014 (August 25-December 12), representing pre and post periods for this project. Overall sessions increased by 280% (601 in Fall 2013 to 2,288 in Fall 2014) and overall visitors increased by 240% (530 to 1,801); inbound sessions from organic search increased by 436% (221 to 1,131), and inbound sessions specifically from Google Search increased by 441% (203 to 1,099). Google Analytics reporting from the Fall academic terms in 2015 (August 24-December 11) and 2016 (August 29-December 16) show that the gains in sessions, visitors, and search traffic have been sustained.”
From: “Linked Data is People: Building a Knowledge Graph to Reshape the Library Staff Directory” Code4lib Journal, April 2017
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New Search and Browse
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Connecting our Services to the Library Knowledge Graph
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https://www.lib.montana.edu/services/research-and-instruction
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A machine address that can be referenced and linked in other applications.
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http://www.lib.montana.edu/people/about/47#person
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makesOffer
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https://www.lib.montana.edu/services/research-and-instruction/#service
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Where to start?
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Humans + Bots
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A teaching moment
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A cataloging moment
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A discovery moment
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What happens to libraries if machines can read all representations of the
library?
Hat tip: Chris Bourg @mchris4duke
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5 Star Linked Open Data
http://5stardata.info/
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Why Linked Open Data?• Libraries as publishers in Web of Data• Reuse of our data = Significance• Can improve findability in search
engines (search engine optimization)• Levels of description in LOD enable
entirely new applications
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A Machine UX Program?
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The opportunity to (re)define ourselves and
our work
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AcknowledgementsI would like to thank Alison Hitchens for her excellent work in explaining and teaching linked data concepts and definitions.
http://www.accessola2.com/olita/insideolita/wordpress/?p=60029
She was also gracious enough to distribute her work under the Attribution-Noncommercial-Share Alike 3.0 Unported license. And I am doing the same.
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Scott Young: Digital Initiatives Librarian at Montana State University. @hei_scott
Jason Clark: Head of Library Informatics & Computing at Montana State University Library @jaclark
Patrick O’Brien: Semantic Web Research Director at Montana State University Library.
Kenning Arlitsch: Dean of the Library at Montana State University @kenning_msu
Doralyn RossmannHead, Collection DevelopmentMontana State University Libraryhttps://doralyn.org/@doralyn
A Research Team Effort
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ResourcesHarper, Corey. Library linked data: tuning library metadata for the semantic web. An ALCTS webcast, March 16. 2011. (open access) http://www.ala.org/alcts/confevents/upcoming/webinar/cat/031611
Berners-Lee, Tim. The next web. A TED talk, February 2009. (open access) http://www.ted.com/talks/tim_berners_lee_on_the_next_web
Koster, Lukas (2011) Brief Introduction to Linked Data (open access) https://docs.google.com/document/d/1W6UOCLgxTyM0BlPfd5hs58dh4k6CUdLW354AjjtnJfk/edit
*See also LODLAM - Linked Open Data in Libraries, Archives & Museums at http://lodlam.net/
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Questions? twitter.com/jaclarkwww.lib.montana.edu/~jason/talks.php