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The [[Bitboards|bitboard]] engine provides [[Automated Tuning|automated evaluation tuning]] by [[Automated Tuning#LogisticRegression|logistic regression]],
either using [https://en.wikipedia.org/wiki/Stochastic_gradient_descent stochastic gradient descent] or [https://en.wikipedia.org/wiki/Stochastic_gradient_descent#AdaGrad AdaGrad].
However, it seems, the current [[Neural Networks#Perceptron|perceptron]] approach of the [[Evaluation|evaluation]] may soon be replaced by a three layer an own [[NNUE]] <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75001&start=4 Re: Koivisto] by [[Finn Eggers]], [Neural Networks|neural network[CCC]] , September 04, 2020</ref> <ref>[https://github.com/Luecx/Koivisto/commits/master/src_files/nn History for src_files/nn - Luecx/Koivisto · GitHub]</ref>.
=Features=
: [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=72613&start=357 Re: New engine releases 2020] by [[Finn Eggers]], [[CCC]], September 03, 2020
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75001 Koivisto] by [[Gerd Isenberg]], [[CCC]], September 04, 2020
: [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75001&start=4 Re: Koivisto] by [[Finn Eggers]], [[CCC]], September 04, 2020
=External Links=
