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Dynamic Assembly of XML-based Content for Learning

Dynamic Assembly of XML-based Content for Learning. Motivation – Need. Learners often have specific , immediate , and unique learning needs arising from their interests, personal goals, tasks, or assignments

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Dynamic Assembly of XML-based Content for Learning

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  1. Dynamic Assembly of XML-based Content for Learning

  2. Motivation – Need • Learners often have specific, immediate, and unique learning needs arising from their interests, personal goals, tasks, or assignments • Web-based courses often aim toward a broad audience and miss these unique needs – or must be manually customized to an approximate target audience (an expensive process ) • Learners often need small amounts of information scattered across documents, Web sites, content databases, and courses. • Web search engines are insufficient -- they do not organize related search results into a coherent whole for effective and efficient learning

  3. The “Dynamic Assembly” Problem How can a system assemble learning information and activities "on the fly" to meet the user's immediate and specific learning needs? • How can we efficiently create small, repurposable snippets of diverse content? (XML, Learning Object Compiler) • How can we improve search precision for learning objects? (Learning Object Metadata extensions, index both content and metadata) • How can we enabling pluggable learning object components in dynamic learning experiences? (LOM extensions for instructional role) • How can we generate a coherent collection of search results that address the user’s need? (directed RDF graph search) • How can we generate a logical learning progression? (uniform sequencing policy)

  4. System Architecture Learning Object Compiler Topic Graph, Topic Sequence, and Instructional role Sequence Courses Learning Time, Instructional role, & Topic Metadata Web Resources Personal Custom Course Catalogs & Tracking Data per User Learning Experience Metadata Web Graphs Relevance ranking Presentations Learning Object Metadata Per-User Data Search Engine Dynamic AssemblyEngine Course Playeror LMS Duration, Search Scope Learning Object Organization Documents Query Custom Course Source Materials Learner

  5. XML Learning Object Compiler Potential XML Fragments Group & Tag Sources Docbook XML SCORM SCOs

  6. Pilot Study • 7 large IBM Redbooks • A series of “how-to manuals” • Focused on the WebSphere product line • Over 5,000 pages of text and graphics • 300,000 lines of text + 6,000 images • Consistent presentation and writing style • No digital rights issues Challenges: • Multiple templates • Logical chunks vary in size • Dependencies/links • Redundancies, coverage gaps http://www.redbooks.ibm.com

  7. Content Recombination – Modularization and Metatagging • 27 experts • 500 learning modules • 2-4 hrs avg/expert • 100-300 pp,/expert

  8. Sample Learning Object Content XML <module xmlns:html="http://www.w3.org/TR/REC-html40"> <chapter id="454623" label="1."> <title>Overview of Web services</title> <sect1 id-=“458846” label=“1.1”> …. </sect1> </chapter> </module>

  9. Sample Learning Object Metadata XML <?xml version="1.0" encoding="UTF-8"?> <lom xmlns=http://www.imsglobal.org/xsd/imsmd_rootv1p2p1 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.imsglobal.org/xsd/imsmd_rootv1p2p1 imsmd_rootv1p2p1.xsd"> <general> <title> <langstring xml:lang="en">Overview of Web Services</langstring </title> </general> <typicallearningtime> <datetime>PT69S</datetime> </typicallearningtime> .... </lom>

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