David J. Wales

Characterising the area under the curve loss function landscape

2022 · Machine Learning Science and Technology

Abstract One of the most common metrics to evaluate neural network classifiers is the area under the receiver operating characteristic curve (AUC). However, optimisation of the AUC as the loss function during network training is …

Explainable Gaussian processes: a loss landscape perspective

2024 · Machine Learning Science and Technology

Abstract Prior beliefs about the latent function to shape inductive biases can be incorporated into a Gaussian process (GP) via the kernel. However, beyond kernel choices, the decision-making process of GP models remains poorly understood. …