Q − Q plot of the weights of the concatenate layer. The solid blue line shows the standardized distribution of the 513 concatenate layer weights obtained in a single training. The solid gray line displays the standardized distribution of the weights corresponding to the neuron linked to the output of the Classification module, obtained from 1000 bootstrap runs. The blue line shows the standardized distribution of the bootstrap runs for a random neuron weight. The red dashed line indicates the expected relation for a standard normal distribution.