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* [[Pawn Hash Table]]
* [[Pawn Structure]]
* [[Automated Tuning]] by [[Automated Tuning#LogisticRegression|Logistic Regression]], [https://en.wikipedia.org/wiki/Stochastic_gradient_descent#AdaGrad AdaGrad] (12.50) <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=74877 Evaluation & Tuning in Chess Engines] by [[Andrew Grant]], [[CCC]], August 24, 2020 </ref><ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75350 Ethereal Tuning - Data Dump] by [[Andrew Grant]], [[CCC]], October 10, 2020</ref>
==Misc==
* [[Syzygy Bases]] using [[Syzygy Bases#Fathom|Fathom's]] probing code (9.65), superseded by 7-men [[Syzygy Bases#Pyrrhic|Pyrrhic]] (12.50)
=Publications=
* [[Andrew Grant]] ('''2020'''). ''Evaluation & Tuning in Chess Engines''. <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=74877 Evaluation & Tuning in Chess Engines] by [[Andrew Grant]], [[CCC]], August 24, 2020 </ref> <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75350 Ethereal Tuning - Data Dump] by [[Andrew Grant]], [[CCC]], October 10, 2020</ref>
=Forum Posts=
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75159 Ethereal Pawn-King NN] by [[Andrew Grant]], [[CCC]], September 19, 2020
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75335 Final Release of Ethereal, V12.75] by [[Andrew Grant]], [[CCC]], October 09, 2020
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75345 Request for someone to train an NNUE for Ethereal] by [[Andrew Grant]], [[CCC]], October 09, 2020 » [[NNUE]]
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75350 Ethereal Tuning - Data Dump] by [[Andrew Grant]], [[CCC]], October 10, 2020
=External Links=
