Exponential loss regularisation for encouraging ordinal constraint to shotgun stocks quality assessment

Víctor Manuel Vargas, Pedro Antonio Gutiérrez, Riccardo Rosati, Luca Romeo, Emanuele Frontoni, César Hervás-Martínez

Abstract: Highlights•Unimodal regularisation for cross-entropy loss using a distribution based on the proposed Lp exponential function.•Comparison with other regularisation methods based on other distributions and the standard nominal method.•Ordinal output scheme based on the cumulative link models with different link functions.•Combined with convolutional neural networks and applied to the aesthetic quality control process to determine the quality of the wood used to manufacture shotgun stocks.