The work presents an application of automated planning to the process of course configuration. Configuring a course means to build a course based on the effective needs of the specific learner. The course is built by selecting and sequencing learning objects (learning components) from a repository. Parameters in that process are the starting knowledge that the learner already possess and the ta...

Joins in Hadoop has always been a problem for its users: the Map/Reduce framework seems to be specifically designed for group-by aggregation tasks rather than across-table operations; on the other hand, join operation in distributed database systems was never an easy task because data location and skewness makes join strategies harder to optimize. Fragment-replicate join (map join) may be a cle...

A study plan is the choice of concepts and the organization and sequencing of the concepts to be covered in an educational course. While a good study plan is essential for the success of any course offering, the design of study plans currently remains largely a manual task. We present a novel data-driven method, which given a list of concepts can automatically propose candidate plans to cover a...