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Topic Title: QTI v2.1 Implementation Survey Results
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Created On: 06/22/2010 09:47 AM
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 06/22/2010 09:47 AM
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mmckell

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Joined: 02/25/2009

IMS QTI 2.1 survey nets 21 implementations; interoperability demonstration planned for August

Earlier this year, many of you had a look at a long and detailed survey of implementations of the IMS QTI v2.1 specification. The QTI working group is very grateful to everyone for engaging with the survey and providing invaluable information about how the specification is being implemented across the globe. The results are available here in the QTI Public Forum (qti2p1ProfileSurvey.xls).

These survey results have been analyzed to identify the scope of the QTI v2.1 profiles that will accompany the final version of the specification. The development of these profiles gives users of QTI-based assessment applications greater confidence that systems will interoperate and provides a meaningful test to measure conformance. IMS will report official conformance status of specific products on an ongoing basis here: http://www.imsglobal.org/cc/statuschart.html. The profiles will also provide options for results reporting from assessment applications using IMS Learning Tools Interoperability and Learning Information services.

The survey results revealed that while there was a clear overlap with regard to basic features, and a smaller but clear set of applications that implemented a very large subset, there was little overlap in the middle. That is, assessment applications that implemented more than a minimal subset, but less than the whole spec, each appeared to support a different, non-overlapping set of features.

Using the survey results as guidance, the QTI working group is currently developing two profiles to be included in the QTI v2.1 Final specification. The first profile is functionally similar to the QTI v1.2 profile included in Common Cartridge v1.0. This CC-QTI Profile represents a small subset of the complete specification but covers the most common interaction types (such as multiple choice or fill in the blank), and will be included in a future version of the Common Cartridge spec. The second profile, called the Base QTI Profile captures features of the v2.1 specification that are currently supported by systems and applications with the most comprehensive implementations.

In addition, some communities and regions will also work on the formalization of profiled extensions of the v2.1 specification. For example, the JISC MathAssess community has implemented a set of extensions on top of a wide profile of QTI that enables the use of a specific mathematics engine within tests. This profile could consist of the Base QTI Profile plus math extensions. Likewise, the team at Université Pierre et Marie Curie have made a smaller math extension to a smaller subset of the specification - which could consist of the CC-QTI Profile plus math extensions.

The relation between the generic profiles and extensions are visualized in the attached diagram (qtiv2p1profiles.pdf).

As work continues on developing and testing the profiles, the QTI working group is planning interoperability demonstrations of the CC-QTI Profile and the Base QTI Profile to take place during the IMS Quarterly meeting in Koblenz, Germany, 2-5 August 2010. Draft agendas and travel details are available here: http://www.imsglobal.org/aug2010koblenz.cfm

For more information, please visit the IMS QTI page http://www.imsglobal.org/QTI.html or contact Mark McKell mmckell[AT]imsglobal.org


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