In this paper we report on the results of a European survey on business/ICT alignment practices. The goal of this study is to come up with some practical guidelines for managers on how to strive for better alignment of ICT investments with business requirements. Based on Luftman's alignment...

Current methods of evaluating the quality of recommender systems are based on averages of metrics such as the average normalized discounted cumulative gain, average diversity and average reciprocity. Averages of metrics give a good sense of the overall quality of the recommendations, but not of...