Loss Functions (qiskit_machine_learning.utils.loss_functions)#

A collection of common loss functions to be used with the classifiers and regressors provided by Qiskit Machine Learning.

Loss Function Base Class#

Loss

Abstract base class for computing Loss.

KernelLoss

Abstract base class for computing the loss of a kernel function.

Loss Functions#

L1Loss

This class computes the L1 loss (i.e.

L2Loss

This class computes the L2 loss (i.e.

CrossEntropyLoss

This class computes the cross entropy loss for each sample as:

SVCLoss

This class provides a kernel loss function for classification tasks by fitting an SVC model from scikit-learn.