Fill overview page

zfit.loss.ExtendedUnbinnedNLL(model, data[, …])

An Unbinned Negative Log Likelihood with an additional poisson term for the

zfit.loss.UnbinnedNLL(model, data[, …])

The Unbinned Negative Log Likelihood.

zfit.loss.BaseLoss(model, data[, fit_range, …])

A “simultaneous fit” can be performed by giving one or more model, data, fit_range to the loss.

zfit.loss.SimpleLoss(func[, deps, …])

Loss from a (function returning a) Tensor.


EXPERIMENTAL! Enable a loss penalty if the loss is NaN, which can push back the minimizer.