ARD-based selection of hearing aid features. Shown is a Hinton diagram of , computed from preference data. Clockwise, starting from (a) subjects nos. 3, 6, 4, and 1. For each diagram (horizontally (from left to right)), there is a time scale (in seconds) at which a feature is computed. Vertically (from top to bottom): name of the feature. Box size denotes relevance.