the semantic interoperability between distance learning systems in a cloud environment. In literature, I found two
major approaches : Using standards or use of ontologies. The use of standards is not obvious for the existing systems. So we must use ontologies.
The idea is that each learning system is represented by an ontology. Interoperability between systems is to find correspondences between the concepts

of ontologies that represent them. There are several methods to achieve this goal : the mapping , alignment , merging and integration. In each method ,
there are several techniques ( MAFRA , PROMPT , … ) .I want to know which mode is suitable for my context , a comparative study between techniques
that meet the same need . The comparison must be based on a list of clear indicators . The choice of technique should be based . A proposal to
improve the technique is also required. A table of statistics and measures to illustrate the choice the selection according to a test set.I want to submit
this article to a scientific journal: International Journal of Interactive Mobile Technologies (Ijim). So it must be formatted according to the format adopted
by this journal.