Challenge+DC@RuleML 2015: Rule Challenge and Doctoral Consortium RuleML 2015
: proceedings of the RuleML 2015 Challenge, the Special Track on Rule-based Recommender Systems for the Web of Data, the Special Industry Track and the RuleML 2015 Doctoral Consortium, hosted by the 9th International Web Rule Symposium (RuleML 2015) : Berlin, Germany, August 2-5, 2015