The winners of the Discovery Challenge are ...

This year's Discovery Challenge presents a dataset from the social bookmarking system BibSonomy to deal with two important tasks: the detection of spam and the recommendation of tags.

And the winners are: ...

For the spam detection task with an AUC value of 0.98, these are A. Gkanogiannis and T. Kalamboukis from Athens University of Economics and Business, which use a text classification approach with a classifier which refines the
solution similar to approaches known from the area of relevance feedback.

For the tag recommender challenge with an F-Measure of 0.19, these are M. Tatu and colleagues from Lymba Corporation. They use a natural language approach to generate tag recommendations.

Together with other participants they will present their results at the corresponding workshop on Monday, September 15th.