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Toward a Service-Oriented Architecture for e-Learning · Toward a Service-Oriented Architecture for...
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Toward a Service-Oriented Architecture for e-Learning
(Dr.) Timothy K. Shih 施國琛 National Central University, Taiwan
Neil Y. Yen 嚴譽文 Waseda University, Japan
2011 Tsinghua-Intel Transparent & Cloud Computing Summit
Evolution of Historical Development
• Practical Systems – Courseware Authoring Tool
– Learning Management System
– Repository
– Ubiquitous Learning Support System (or Applications)
• Core Techniques – Intelligent Mechanisms
• Smart Search
• Multimedia Streaming
– Automated Mechanisms • content prefetching
• asynchronization downloading
– …
Cloud Challenges - at a glance -
• Data Governance – creation & receipt, distribution, disposition, …
• Service Manageability – decomposition, aggregation, reuse, …
• Process Monitoring – real-time history analysis and mining
• Availability & Reliability – service lifecycle, retrieval, application, …
• Visualization Security – resource & information exposure, …
Today - three major issues -
Seamless Support Integration
Today - three major issues -
Seamless Support Integration
with the focus on service interoperability
Integration - strategy -
• The Learning Tools Interoperability
– a common interface for web service
– resources exchange simply through a package
• Major Components
– Proxy Tool
– LTIR (Learning Tool Interoperability Run-Time)
• Session/Security Management
• Deployment Service
• Configuration Service
• Launch Service
• Outcome Service
Integration - implementation -
1
2
3 4
MINE HardSCORM Authoring Tool
MINE Learning Management System
Features
• no specific definition is required
• easy to be maintained and extended
• always available and searchable
• seamless, stateless and extra resources free
Integration - companions -
… to be added
Today - three major issues -
Seamless Support Integration
with the focus on operation suggestions
Support - -
the story starts from …
Support - general scenario -
Support - general scenario -
Support - our scenario -
1. search for the local/global handler system 2. metadata matching 3. locate the target resources 4. retrieve the resources and reuse
However, there are 23,000 learning resources out there in our repository.
Support - motivation & purpose -
• About Learning Resources
– No objective benchmarks
• subjective usage experience is required
• resources cannot be compared
• characteristics are missing
• Discovery and Reuse Learning Resources
– follow specific specifications (e.g., SCORM)
– Think about next move or … moves
• Comprehensive Understanding
• Plan the Search
… an integrated approach to facilitate the search process and enrich the search experiences
Support - implementation -
• Showcase - 1
suggestion(s) to user’s query
potential template to lecture organization
… 10 more features out there
Support - preliminary implementation -
• Showcase - 2
suggestion to course organization
suggestion to supplementary resources
suggestion to course content (to be added)
Features
• time-series information for highlighting significant portions of learning resource
• progressive suggestions corresponded to the query
• search result expansion based on selected resource (i.e., intelligent lecture template)
• adaptive re-ranking result considering the working items
• intelligent search path concerning the real-time collective intelligence mining and query analysis
Today - three major issues -
Seamless Support Integration
with the focus on service transition
Seamless - concept -
• A simple consideration
• Services are not activated separately but they should
understand what/when the follow-up is.
– determine the next potential service(s)
• pre-download the resource and its related information in the repository while
performing searching
– setup connection and proceed communication
single service with helps comprehensive support in an integrated service
Seamless - our scenario -
HardSCORM Authoring Tool
Learning Management System Repository Cloud
- private / public -
End-User Device(s) - iOS / Android -
Seamless - preliminary implementation -
implemented on MINE LMS, iPad, iPhone and HTC Desire HD
Special Thanks
2011 Tsinghua-Intel Transparent & Cloud Computing Summit
Yaoxue Zhang (Dr.)
Tsinghua University, China
Yuezhi Zhou (Dr.)
Tsinghua University, China
Jianhua Ma (Dr.)
Hosei University, Japan
Qun Jin (Dr.)
Waseda University, Japan