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Personalized cluster-based semantically enriched web search for e-learning

Published: 30 October 2008 Publication History

Abstract

We present an approach for personalized search in an e-learning platform, that takes advantage of semantic Web standards (RDF and OWL) to represent the content and the user profiles. Personalizing the finding of needed information in an e-learning environment based on context requires intelligent methods for representing and matching the learning needs and the variety of learning contexts. Our framework consists of the following phases: (1) building the semantic e-learning domain using the known college and course information as concepts and sub-concepts in a lecture ontology, (2) generating the semantic learner's profile as an ontology from navigation logs that record which lectures have been accessed, (3) clustering the documents to discover more refined sub-concepts (top terms in each cluster) than provided by the available college and course taxonomy, (4) re-ranking the learner's search results based on the matching concepts in the learning content and the user profile, and (5) providing the learner with semantic recommendations during the search process, in the form of terms from the closest matching clusters of their profile. One important aspect of our approach is the combination of an authoritatively supplied taxonomy by the colleges, with the data driven extraction (via clustering) of a taxonomy from the documents themselves, thus making it easier to adapt to different learning platforms, and making it easier to evolve with the document/lecture collection. Our experimental results show that the learner's context can be effectively used for improving the precision and recall in e-learning search, particularly by re-ranking the search results based on the learner's past activities.

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Cited By

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  • (2018)Dynamic user profiles for web personalisationExpert Systems with Applications: An International Journal10.1016/j.eswa.2014.10.03242:5(2547-2569)Online publication date: 29-Dec-2018
  • (2016)Computer-Assisted Learning Based on Universal Design, Multimodal Presentation and Textual LinkageJournal of the Knowledge Economy10.1007/s13132-016-0371-y7:2(373-387)Online publication date: 31-Mar-2016
  • (2010)Realization of an Expandable Search Function for an E-Learning Web PortalProceedings of the 2010 IEEE/ACIS 9th International Conference on Computer and Information Science10.1109/ICIS.2010.117(361-366)Online publication date: 18-Aug-2010
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    cover image ACM Conferences
    ONISW '08: Proceedings of the 2nd international workshop on Ontologies and information systems for the semantic web
    October 2008
    124 pages
    ISBN:9781605582559
    DOI:10.1145/1458484
    • General Chair:
    • Ramez Elmasri,
    • Program Chairs:
    • Martin Doerr,
    • Mathias Brochhausen,
    • Hyoil Han
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Publication History

    Published: 30 October 2008

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    Author Tags

    1. information retreival
    2. ontology student profile
    3. search personalization

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    CIKM08
    CIKM08: Conference on Information and Knowledge Management
    October 30, 2008
    California, Napa Valley, USA

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    Cited By

    View all
    • (2018)Dynamic user profiles for web personalisationExpert Systems with Applications: An International Journal10.1016/j.eswa.2014.10.03242:5(2547-2569)Online publication date: 29-Dec-2018
    • (2016)Computer-Assisted Learning Based on Universal Design, Multimodal Presentation and Textual LinkageJournal of the Knowledge Economy10.1007/s13132-016-0371-y7:2(373-387)Online publication date: 31-Mar-2016
    • (2010)Realization of an Expandable Search Function for an E-Learning Web PortalProceedings of the 2010 IEEE/ACIS 9th International Conference on Computer and Information Science10.1109/ICIS.2010.117(361-366)Online publication date: 18-Aug-2010
    • (2010)Visual knowledge representation of conceptual semantic networksSocial Network Analysis and Mining10.1007/s13278-010-0008-21:3(219-229)Online publication date: 25-Nov-2010
    • (2010)Semantic e-Learning: Next Generation of e-Learning?Next Generation Society. Technological and Legal Issues10.1007/978-3-642-11631-5_27(295-308)Online publication date: 2010
    • (2008)Metadata domain-knowledge driven search engine in "HyperManyMedia" E-learning resourcesProceedings of the 5th international conference on Soft computing as transdisciplinary science and technology10.1145/1456223.1456298(363-370)Online publication date: 28-Oct-2008

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