pygsti.tools.chi2fns

Chi-squared and related functions

Functions

chi2(model, dataset[, circuits, ...])	Computes the total (aggregate) chi^2 for a set of circuits.
chi2_approximate_hessian(model, dataset[, ...])	Compute and approximate Hessian matrix of the chi2() function.
chi2_hessian(model, dataset[, circuits, ...])	Compute the Hessian matrix of the chi2() function.
chi2_jacobian(model, dataset[, circuits, ...])	Compute the gradient of the chi^2 function computed by chi2().
chi2_per_circuit(model, dataset[, circuits, ...])	Computes the per-circuit chi^2 contributions for a set of circuits.
chialpha(alpha, model, dataset[, circuits, ...])	Compute the chi-alpha objective function.
chialpha_per_circuit(alpha, model, dataset)	Compute the per-circuit chi-alpha objective function.