Changelog • brulee

brulee 0.6.0

CRAN release: 2025-09-02

Transition from the magrittr pipe to the base R pipe.
To try to help avoiding numeric overflow in the loss functions:
- Tensors are stored as a 64-bit float instead of 32-bit.
- Starting values were transitioned to using Gaussian distribution (instead of uniform) with a smaller standard deviation.
- The results always contain the initial results to use as a fallback if there is overflow during the first epoch.
- brulee_mlp() has two additional parameters, grad_value_clip and grad_value_clip, that prevent issues.
- The warning was changed to “Early stopping occurred at epoch {X} due to numerical overflow of the loss function.”
Several new SGD optimizers were added: "ADAMw", "Adadelta", "Adagrad", and "RMSprop".
Mixture parameter values different than zero cannot be used for several optimizers since they require L2 penalties.

CRAN release: 2025-04-07

Removed a unit test for numerical overflow since it occurs less frequently and has become increasingly more challenging to reproduce.

CRAN release: 2025-01-30

Added a convenience function, brulee_mlp_two_layer(), to more easily fit two-layer networks with parsnip.
Various changes and improvements to error and warning messages.
Fixed a bug that occurred when linear activation was used for neural networks (#68).

CRAN release: 2024-02-14

Fixed bug where coef() didn’t would error if used on a brulee_logistic_reg() that was trained with a recipe. (#66)
Fixed a bug where SGD always being used as the optimizer (#61).
Additional activation functions were added (#74).

CRAN release: 2022-09-19

Several learning rate schedulers were added to the modeling functions (#12).
An optimizer was added to [brulee_mlp()], with a new default being LBFGS instead of stochastic gradient descent.

CRAN release: 2022-02-02

Modeling functions gained a mixture argument for the proportion of L1 penalty that is used. (#50)
Penalization was not occurring when quasi-Newton optimization was chosen. (#50)

CRAN release: 2021-12-15

First CRAN release.