Collaborative Filtering Java Learning Objects
Through Downes’, I found an interesting paper on the application of collaborative filtering to e-Learning in ITDL (by Jinan A. W. Fiaidhi).
It makes the point quite well that we must differentiate heterogeneous settings from sane laboratory conditions:
Searching for LOs within heterogeneous repositories as well as within collaborative repositories is far more complicated problem. In searching for such LOs we must first decide on appropriate metadata schema, but which one!
Montreal, Canada 
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