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Service Oriented Architecture in eTesting Systems

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Title: Service Oriented Architecture in eTesting Systems


1
6th Workshop Software Education and Reverse
Engineering
Service Oriented Architecturein eTesting Systems
Goce Armenski, M.Sc(armenski_at_ii.edu.mk)
Institute of Informatics - FNSUniversity Ss.
Ciryl and Methodious Skopje, Macedonia
2
1.
Content
CONTENT
- ????? SYSTEM FOR ELECTRONIC TESTING
- INTRODUCTION
- ?RCHITECTURE, CONCEPTS AND FUNCTIONALITY OF
??EST
- APPLICATION OF ETEST
- RESULTS
- SERVICE ORIENTED ARCHITECTURE
- SOA IN EASSESSMENT
- COMMON FRAMEWORK
- CONCLUSION
3
2.
??est concepts and functionality
??est Technology
Web based sollutions VS desktop based sollutions
  • Web based application- Active Server Pages
    (ASP)- JavaScript- SQL Server 2000- NT Server
    and Win 2000 compatible- IIS 4.0 or newer

Web Browser (Netscape 4.x or Internet Explorer
4.x, and above)
JScript
Email (SMTP)
SQL Server Access
IIS 4.0
ASP
Win 2000 Server
4
3.
??est concepts and functionality
Course organization
  • learning objects- three structure

Fig. 3 Course organization
5
4.
??est concepts and functionality
Types of questions
  • Multichoice questions (choose one of many, choose
    many of many, yes/no answers)
  • Short entry answer (text or numerical)
  • Essay answer.
  • Questions can have pictures or graphs in the text
    or offered answers

6
5.
??est concepts and functionality
Test creation algorithm
Fig. 4 Algorithms for test creation
  • dynamic linear tests (fixed number of questions)

Marking and reporting
  • results are shown at the end of the test-
    negative marking

7
6.
??est concepts and functionality
Statistical data analyses
  • Identification of content which is not well
    presented
  • Personalized feedback to students
  • Identification of week questions which need to be
    revised before used again
  • Identifying the individual weaknesses of students.

8
7.
Application of eTest
4. APPLICATION OF ??EST
- Integration in the process of learning -
Controlled learning
Fig. 5 Way of passing the learning objects
  • Successful strategy??
  • all questions
  • N questions in a row
  • N right questions
  • 3 right questions in a row

Statistical analyses of the user activities
9
8.
Results
5. RESULTS
Practical Implementation
  • Institute of Informatics , FNS (2001)
  • ?.D. Mobimak (2002)
  • UNDP (2003-2004)

The use of technology in education is very
dependent of the organization - logistics
- social changes Synchronization with other
systemsTechnical infrastructure
10
9.
Results
Data gathering
Institute of Informatics, FNS (january 2001)
- 26 courses - 12391 questions - 589
scheduled assessments - 9861 generated tests
Does eTesting provides more effective and more
objective assessment compared to the traditional
forms, and does it help the learning process
11
10.
Results
Problems Facing with
  • Installed in 4 Faculties from 3 Universities
  • - not interoperable
  • does not allow searching or using common
    question bank
  • does not allow cross-institutional cooperation
  • not fully standards compliant

12
Possible Solution
11.
Results
13
IT Architecture Requirements
12.
Service Oriented Architecture
6. SERVICE ORIENTED ARCHITECTURE
  • Simplicity
  • Software that reflects the need of business
  • Agility and flexibility
  • Reusability
  • Technology independent
  • Promote integration

Built to Change
14
Evolution of the Web
13.
Service Oriented Architecture
15
14.
Service Oriented Architecture
SERVICE ORIENTED ARCHITECTURE
An approach for building distributedcomputing
systems based on encapsulating business functions
as services that can be easily accessed in a
loosely coupled fashion.
16
SOA Its Not a Thing
15.
Service Oriented Architecture
Its not a
  • Product
  • A specific technology
  • An application
  • A specific standard
  • A specific set of rules

An Approach for Building Agile and Flexible
Business Applications
17
7. SOA in eLearning
16.
SOA in eLearning
  • JISC Technical Framework to support e-Learning
    (ELF).
  • IMS Abstract Framework (IAF)
  • LeAPP Learning Architecture Project
  • Carnegie Mellons Learning Services Architecture

18
17.
SOA in eLearning
e-Learning (ELF)
19
8. SOA in eAssessment
18.
SOA in eAssessment
  • FREMA.
  • TENCompetence Assessment Model

20
FREMA Core Services
19.
SOA in eAssessment
  • Support Services
  • Schedule
  • Notify
  • Track
  • Authorise and Authenticate
  • Assessment Services
  • Assign
  • Author item
  • Author assessment
  • Validate assessment
  • Take assessment
  • Mark assessment
  • Moderate assessment
  • Grade Assessment
  • View Feedback

Reference Impl
Service Profiles
Assessment Domain Definition
21
TENCompetence - Phases in the assessment process
20.
SOA in eAssessment
Assessment Design
Item Construction
Assessment Construction
AssessmentDelivery
Respons Evaluation
DecisionMaking
22
eTest Core Services
21.
SOA in eAssessment
  • Support Services
  • Schedule
  • Notify and Announce
  • Track
  • Authentication
  • User Management
  • Assessment Services
  • Item Construction
  • Test Construction
  • Test Delivery
  • Results Collecting
  • Marking
  • Decision Making
  • Statistical Analysis

23
22.
SOA in eAssessment
SOA Projects in eAssessment
  • Research Projects
  • TOIA Technologies for Interoperable assessment
  • ASSIS Assessment Sequencing
  • APIS assessment Provision through
    Interoperability
  • and many others
  • Standards Bodies
  • In Assessment IMS, OSIDs
  • In Web Services - SOAP, WSDL, WSRF, W3C

24
23.
Conclusion
6. CONCLUSION and FUTURE FORK
Service Oriented Architecture
  • Advantages over monolithic applications for
    Testing

Review of existing SOA models for eAssessment
  • Design of Common Framework by service
    identification
  • Practical realization

Extend the ASSIS project with different test
delivery models
  • Dependent on context
  • Game based learning

25
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