Domain-Expert Repository Management for Adaptive Hypermedia Learning System

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Domain-Expert Repository Management for Adaptive
Hypermedia Learning System

• By
• Norazah Yusof Paridah Samsuri

Members of SPAtH Group Faculty of Comp. Science
Info. Sys. University of Technology Malaysia
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Introduction

• Domain-Expert repository management system is a
  tool that supports activities of maintaining the
  Domain and Expert module of SPAtH.
• It helps instructors organized their teaching
  materials and expert lists into the system.

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Introduction

• SPAtH is an adaptive web-based learning system
  for teaching and learning computer programming
  language.
• It incorporates the features of hypermedia and
  intelligent tutoring systems to adaptively
  present the students with suitable learning
  materials.

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Structure of SPAtH
Learner Model
Adaptive Engine
Domain-Expert Model
Instructors
Students
SPAtH
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Adaptive Engine

• The interface between the learner and the system,
  as well as between the system and the learner
  model, also with the domain-expert model.
• It is responsible to diagnose the learners
  knowledge acquisition status and categorize each
  learner as poor, intermediate or good.

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Learner Model

• Stores information about each individual
  learners.
• It also records the learners behaviour during
  learning session in order to form an estimation
  of the learners knowledge acquisition status.

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Domain-Expert Model

• Stores the teaching materials and teaching
  strategies for different categories of learners.
• 2 main components of Domain-expert model
• the domain knowledge
• the expert knowledge

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Domain Knowledge

• Contains the teaching materials that consist of
• notes,
• practices examples,
• check-point questions,
• help/hints and
• solutions to each questions.

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Semantic representation of teaching materials
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Storage of Teaching materials

• 2 different forms
• document file storage prepared in
• active server pages (.asp) document files
• hypertext markup language (.htm) files.
• relational databases/tables in SQL.

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Storage of Teaching Materials
Document File Storage
Relational Database



Notes
Chapters
IndxNote NoteDesc UrlNote Type
IndxTitle Title Desc
Examples
IndxEx UrlEx PreReq
Checkpoints
Objective
IndxCP UrlCP UrlAnswer UrlHint UrlNote
IndxObj ObjDesc
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Lists of index note and its URL to the documents
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Table Relationships in Domain Database
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Expert Knowledge

• Consists of the teaching strategies that will
  match with the learners knowledge acquisition
  status.
• It is a suggested list of learning path for each
  category of learner that can be either good,
  intermediate or poor.

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Storage of Expert Knowledge

• The suggested flow of teaching materials for each
  category of learners is stored in a relational
  database in three sets of expert tables
• the poor list,
• the intermediate list,
• and the good list.

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Expert Tables List for Poor, Intermediate and
Good Learner
Learning flow for Poor Category
Learning flow for Intermediate Category
Learning flow for Good Category
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Table Relationships in Expert Database
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Objective of Domain-Expert Repository Management
System

• To help the instructors
• maintain their teaching materials database and
• storage.
• set their teaching strategies.

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Advantages of Domain-Expert Repository Management
System

• This tool
• supports remote client access,
• allows more than one lecturer to collaborate in
  
• maintaining the learning materials without
  having
• to worry about
• the structure of the database,
• the duplicate file names, and
• the location of the materials.

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2 Main Components of DERMs

• Domain repository manager

Expert repository manager

• Add, update or delete teaching materials in a
  user friendly manner.
• Provides a uniform code to avoid
  inconsistencies in indexing scheme.
• Caters the broken links while deleting nodes.

• Add or delete the learning flow of the
  specified category of learner.
• Caters the linking with the files in the Domain
  storage.
• Records the information in appropriate expert
  knowledge table.

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Domain-Expert Repository Management Process
1. Instructor input valid login name and password
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Domain-Expert Repository Management Process
1. Instructor input valid login name and password
List of Chapters
2. Select Chapter
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Domain-Expert Repository Management Process
1. Instructor input valid login name and password
List of Objectives
2. Select Chapter
3. Select Objective
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Domain-Expert Repository Management Process
4. Select Maintenance Options
6. Update Existing Note
5. Add New Note
7. Delete Existing Note
8. Organize notes
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Process of Adding New Note
1. A unique IndexNote is given automatically
2. Insert Note Descriptions
3. Select document filename by using the Browse
button
4. Initiate the validation qualifier.
5. Activate the code converter
7. Store information in the database
8. Upload the document file to the domain storage
6. Click Upload button
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Process of Updating Note
1. Click on Update at the specific IndexNote
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Process of Updating Note
1. Click on Update at the specific IndexNote
2. The Index Note and URL Note will be displayed.
3. Edit the Note description if necessary.
4. Click on Update Content button to edit the
documents content.
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Process of Updating Note
5. Select Edit with Microsoft FrontPage Editor.
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Process of Updating Note
5. Select Edit with Microsoft FrontPage Editor.
6. Link to Microsoft FrontPage Editor.
7. Edit the document content in FrontPage Editor.
8. Save the file.
9. The content of the document will be updated.
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Process of Deleting Note
1. Click on Delete at the specific IndexNote
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Process of Deleting Note
1. Click on Delete at the specific IndexNote
2. The Index Note and URL Note will be displayed.
3. Click on Delete Button.
4. Search the document file in the Domain
storage.
6. Erase the document file in the Domain storage.
5. Delete this record in the database.
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Organizing Learning Materials in the Expert List
1. Select Learner Category
2. Select Chapter
3. All notes, examples and Questions will be
listed out.
4. Select an item and click on the arrow button.
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Conclusion

• DERMs is developed to make the job easier for all
  instructors regardless of their knowledge in
  software development.
• Although DERMs is only a part of SPAtH, it do
  help solve the domain-expert maintenance problem.

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Domain-Expert Repository Management for Adaptive
Hypermedia Learning System

• Thank you