Post on 03-Jul-2015
description
MINING AND VISUALIZING USAGE OF EDUCATIONAL SYSTEMS USING LINKED DATA
4TH EUROPEAN IMMERSIVE EDUCATION SUMMIT
IVLEATE’14
Selver So(ic, Behnam Taraghi, Mar4n Ebner Social Learning Group, Graz University of Technology, Austria
Laurens De Vocht, Erik Mannens, Rik Van De Walle MulBmedia Lab, Ghent University, Belgium
Agenda
• Mo4va4on, Challenges • Methodology applied on case study PLE • Minining and Visualising Usage of PLE • Conclusion and future work
Mo4va4on • Modern learning environments aim at integra4on of popular internet services • Learners are expec4ng focused and simple plaGorms helping them to organize
their learning process • Lot of logs, lot of data …Cumulated system monitoring data (e.g. logs) of such
environments offers new opportuni4es for op4miza4on
Challenges
• How can we: – reflect – predict – reveal hidden informa4on – improve our systems
• design and make it more usable and interes4ng • sense the impact of learning
Tackling the challenge…
• In order to achieve insight we have to: – understand the context where the informa4on comes from
– know how to model, retrieve, and visualize relevant data in appropriate way
Web based PLE @ TU Graz
• Unsupervised Autonomous Learning Enviroment
• > 4000 users • Working spaces • Widget store • Widget ra4ng and recommender engine • hXp://ple.tugraz.at
Dataset
• data from 4000 users over two years … • json logs • Infoma4on about :
– persons – 4me – widget
Seman4c Web & RDF
• a.k.a. Web 3.0 a.k.a Web of Data • Extension to the Web in order to make it more machine understandable
• RDF for interchange
Method
Modelling • IntelLEO EU Project • Ac4vi4es Ontology • Model of Usage Logs
http://www.intelleo.eu/ontologies/activities/spec/
Querying
Visualiza4on – Usage Intensivity
Visualiza4on -‐ Comparision
Conclusions and Future work • Usefull method to improve the usabilty and design of PLE • Exposing the data to the machines and other services via
Web • Enhancement with Linked Data • Improvement for recommenda4on for Widgets
Contact: no maXer machine or human
foaf:Person
foaf:homepage
http://about.me/softicselver
selver.softic@tugraz.at
Selver Softic
Social Learning Group foaf:Group