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BabeLO—An Extensible Converter of Programming Exercises Formats
First Quarter 2013 (vol. 6 no. 1)
pp. 38-45
Ricardo Queirós, University of Porto, Porto
José Paulo Leal, University of Porto, Porto
In the last two decades, there was a proliferation of programming exercise formats that hinders interoperability in automatic assessment. In the lack of a widely accepted standard, a pragmatic solution is to convert content among the existing formats. BabeLO is a programming exercise converter providing services to a network of heterogeneous e-learning systems such as contest management systems, programming exercise authoring tools, evaluation engines and repositories of learning objects. Its main feature is the use of a pivotal format to achieve greater extensibility. This approach simplifies the extension to other formats, just requiring the conversion to and from the pivotal format. This paper starts with an analysis of programming exercise formats representative of the existing diversity. This analysis sets the context for the proposed approach to exercise conversion and to the description of the pivotal data format. The abstract service definition is the basis for the design of BabeLO, its components and web service interface. This paper includes a report on the use of BabeLO in two concrete scenarios: to relocate exercises to a different repository, and to use an evaluation engine in a network of heterogeneous systems.
Index Terms:
Programming,Interoperability,Distance learning,Mobile communication,Web and internet services,Computer aided instruction,Electronic learning,e-learning,Interoperability,web services,REST,programming exercise formats
Citation:
Ricardo Queirós, José Paulo Leal, "BabeLO—An Extensible Converter of Programming Exercises Formats," IEEE Transactions on Learning Technologies, vol. 6, no. 1, pp. 38-45, First Quarter 2013, doi:10.1109/TLT.2012.21
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