Intelligent Learning Content Management System based...
Transcript of Intelligent Learning Content Management System based...
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Intelligent Learning Content Management System based on SCORM Standard
Department of Computer Science,National Chiao Tung University (NCTU),
Taiwan (R.O.C)2008
Dr. Shian-Shyong Tseng
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Researching Topics
• e/m/u Learning• Expert System• Data Ming • Internet-based Applications • Intrusion Detection System (IDS)
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Introduction• Goal:
– Provide learners with appropriate learning contents according tolearners’ capabilities and learning performance.
• Current Research Results:• Learning Content Standard Definition:
– Teaching Material Markup Language (TMML)。• Transformation and Authoring of SCORM Content.• Management Scheme of SCORM Learning Object
Repository.• Content Adaptation on Mobile Device.• Authoring System of Instruction Design.• Learning Portfolio Analysis Scheme。
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Teaching Material Markup Language (TMML)
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Procedure of Transforming PPT into TMML content
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Applications Demo
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Authoring Tool of SCORM 2004 • SCORM 2004(Sharable Content Object Reference
Model) :– Define Sequencing & Navigation (SN) Specification:
• Can set the automatic learning guidance rules。– Issue:
• It is hard to define and edit for users.– Approach:
• Analyze and modularize the SN into several SN components.
• Visual based Authoring Interface.
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An Example of Sequencing Rules
Sequencing Rules
imsmanifest.xml
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Existing Authoring Tool• Open Source Tools: (Reload Editor)
– www.lsal.cmu.edu/adl or http://www.reload.ac.uk
Edit the Sequencing Rules by clicking in the comboBox of sequencing rules
Hard to image the sequence of final course and it is time-consuming, too.
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The Idea in SCORM 2004 Authoring Tool
Constructing the course structure
Easy to use Hard to use
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A Course Created by Our Approach
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SCORM 2004 Authoring Tool-1
Modularized content structure
Edited Structure
Edit structure of content
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SCORM 2004 Authoring Tool-2
Set rule parameters
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SCORM 2004 Authoring Tool-3
Set Learning Resources
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Management Scheme of SCORM Learning Object Repository (LOR)
• Goal:– Efficiently Maintain, Search, and Retrieve the Learning Object on the
Wire/Wireless Environment.
• Functions:– Maintaining:
• Automatic create the relationship among Los for fast searching.– Searching:
• Provide users with general and Specific Los after searching.– Retrieving:
• Provide users with target LO with associated Los.
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? ?
The Issues on Searching LOR
Learner
Searching
Whole Content will be retrieved by its Metadata or Keyword Vector
Delivery
1. Desired Specific Data within content has to be found by Self.2. Delivering a whole content leads to higher latency than its included objects,especially in Wireless Network.3. Related Leaning Objects within different contents can’t be indicated.
? ?Desired LOs
relation
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SCORM Content Packaging Scope as a structured document
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The Idea for Managing SCORM LOR
Keyword Vector (KV0)
1. Group Similar LOs by their Keyword Vectors (KVs) (TF-IDF)
2. KV of LO in Upper Level is refined by the Center (CC) of its associated groups
KV1+=avg(ΣCC2)
KV2
3. Repeatedly Group similar LOs and Refine KV of their upper LOs level by level.
4. Create Relation Link from group in upper level to related groups on lower level.
KV2
CC2CC2
Keep the KVs about included LOs
Keep inter-relation about included LOs
Keep similar LOs
=<tf1×idf1, tf2×idf2,…, tfn×idfn>
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Level-wise Content Clustering Graph
Link
3.Related LO Link
1.Representative KV
2.Related Clusters Link
LearnerQuery Keywords
1.Get Desired LOs with General & Specific Information
2.Related LOs in other contents
3.Fast Delivery Speed
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Level-wise Content Management Scheme (LCMS)
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Management Scheme of SCORM Learning Object Repository-2
SCORM Metadata
Keyword Search
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Adaptive Content Delivery Mechanism
• Goal:– Deliver content to users according to 1.User
Requirement, 2.Hardware Capability, and 3. Bandwidth Status.
• Approach:– Apply clustering approach and decision tree to manage
a large number of users’ requests.– Proposed decision scheme to decide which content is
suitable enough to be delivered.
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Results of Content Adaptation
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Object Oriented Learning Activity System (OOLA)
• Issue:– It is difficult to build a adaptive learning system for
Teachers.• Goal:
– How to provide teachers with a system to efficiently design their desired learning activity.
• Approach:– A object Oriented Based Instruction Design Model.– A Visualized Authoring Tool.
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Object Oriented Learning Activity (OOLA) Model
• Object Oriented Learning Activity (OOLA)Model:– efficiently represents an Adaptive Learning Activity:
• can provide learners with Content, Interaction, and Assessment.
The Diagram of OOLA Model
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OOLA System Demo
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OOLA Demo
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Support Complex Learning Activity
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Concept Map Construction• Concept Map:
– denote the pre/post-requisite relationships among learning concepts of a course.
• Adaptive Learning/Testing Systems:– offer learners customized courses according to their
aptitudes and learning results. – use a predefined Concept Map to find proper learning
paths for learners.• Issues:
– It is difficult and time consuming to create the concept map of a course for experienced teachers.
– How to automatically create a correct concept map of a course.
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The Idea of Constructing the Concept Map• Apply data mining technique to analyze the relationship between test results and
concepts of course for creating concept map which offers teachers to evaluate their teaching strategies.
transforms the numeric testing data into symbolic onedecrease the redundancy of fuzzifized test data according to discriminationfind the fuzzy association rules of test items
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System Demo-1
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System Demo-2
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39(a), (b), and (c) with Discrimination 0.0, 0.3, and 0.5.
(Support=50, Confidence=0.85)
Speed and direction of motion
Change of speed and direction
0.86
Learner
Learner
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ENDTHANKS