grnnet is currently under active development.
grnnet implements the Generalized Regression Neural Network (GRNN) architecture by Specht (1991).
A GRNN is a variation of radial basis neural and can be related to nonparametric regression. In its essence a GRNN can be seen as a formulation of the k-nearest neighbor algorithm in the terminology of neural networks, where each instance is regarded as artificial neuron and its activation is given by a radial basis function or any other suitable kernel-like function.
The current package allows to create single- and multi-output regression neural network and produces heteroscedastic predictive interval using the conformal prediction framework.
A grnnet object is trained with an internal leave-one-out cross-validation loop and statistically validated with K-fold cross-validation loop.
Specht, D. F. (1991). A general regression neural network. IEEE Transactions on Neural Networks, 2(6), 568-576.
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