Measuring the Concentration Reinforcement Bias of Recommender Systems

In this paper, we propose new metrics to accurately measure the concentration reinforcement of recommender systems and the enhancement of the “long tail”. We also conduct a comparative analysis of various RS algorithms illustrating the usefulness of the proposed metrics. Keywords Dispersion; Diversity; Long Tail; Popularity Reinforcement

• Type: Journal
• Year: 2015
• Where: RECSYS
• Authors: Panagiotis Adamopoulos, Alexander Tuzhilin, Peter Mountanos
• Keywords: Control Systems, RECSYS 2015