Figure 13From: Support the underground: characteristics of beyond-mainstream music listenersComparison of the mean absolute error (MAE) scores reached by NMF for the four subgroups with the ones reached by NMF for BeyMS (black dashed line) and MS (gray dashed line). While specific subgroups (i.e., \(U_{\text{hard}}\)) are treated in an unfair way by recommendation algorithms, others (i.e., \(U_{\text{ambi}}\)) are notBack to article page