2018-02-17 17:51:35 -07:00
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# List of authors for Stockfish, updated just after version 9
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2014-06-20 19:35:09 -06:00
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2018-02-17 17:51:35 -07:00
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Tord Romstad (romstad)
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2016-11-04 07:39:24 -06:00
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Marco Costalba (mcostalba)
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Joona Kiiski (zamar)
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Gary Linscott (glinscott)
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2018-02-17 17:51:35 -07:00
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absimaldata
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Ajith Chandy Jose (ajithcj)
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Alain Savard (Rocky640)
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2014-06-20 19:35:09 -06:00
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Alexander Kure
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2018-02-17 17:51:35 -07:00
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Ali AlZhrani (Cooffe)
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Andrew Grant (AndyGrant)
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Andrey Neporada (nepal)
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2014-06-20 19:35:09 -06:00
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Andy Duplain
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2018-02-17 17:51:35 -07:00
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Aram Tumanian (atumanian)
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Arjun Temurnikar
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2014-06-20 19:35:09 -06:00
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Auguste Pop
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Balint Pfliegel
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2018-02-17 17:51:35 -07:00
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Ben Koshy (BKSpurgeon)
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Bill Henry (VoyagerOne)
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braich
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Brian Sheppard (SapphireBrand)
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Bryan Cross (crossbr)
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Chris Cain (ceebo)
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Dan Schmidt
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Daniel Dugovic (ddugovic)
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2014-06-20 19:35:09 -06:00
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Dariusz Orzechowski
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2018-02-17 17:51:35 -07:00
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David Zar
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Daylen Yang (daylen)
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2016-01-02 02:43:25 -07:00
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DiscanX
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2018-02-17 17:51:35 -07:00
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Eelco de Groot
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ElbertoOne
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erbsenzaehler
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2016-01-02 02:43:25 -07:00
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Ernesto Gatti
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2018-02-17 17:51:35 -07:00
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Fabian Beuke (madnight)
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Fabian Fichter (ianfab)
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fanon
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Fauzi Akram Dabat (FauziAkram)
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Felix Wittmann
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gamander
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gguliash
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Gian-Carlo Pascutto (gcp)
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Gontran Lemaire (gonlem)
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Goodkov Vasiliy Aleksandrovich (goodkov)
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2014-06-20 19:35:09 -06:00
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Gregor Cramer
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2018-02-17 17:51:35 -07:00
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Günther Demetz (pb00067, pb00068)
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Guy Vreuls (gvreuls)
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Henri Wiechers
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2016-11-04 07:39:24 -06:00
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Hiraoka Takuya (HiraokaTakuya)
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2018-02-17 17:51:35 -07:00
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homoSapiensSapiens
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2014-06-20 19:35:09 -06:00
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Hongzhi Cheng
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2018-02-17 17:51:35 -07:00
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Ivan Ivec (IIvec)
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Jacques B. (Timshel)
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Jan Ondruš (hxim)
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Jarrod Torriero (DU-jdto)
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Jean-Francois Romang
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Jerry Donald Watson (jerrydonaldwatson)
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Jonathan Calovski (Mysseno)
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Joost VandeVondele (vondele)
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Jörg Oster (joergoster)
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Using a S-curve for the optimism measure
Add a logarithmic term in the optimism computation, increase
the maximal optimism and lower the contempt offset.
This increases the dynamics of the optimism aspects, giving
a boost for balanced positions without skewing too much on
unbalanced positions (but this version will enter panic mode
faster than previous master when behind, trying to draw faster
when slightly behind). This helps, since optimism is in general
a good thing, for instance at LTC, but too high optimism
rapidly contaminates play.
passed STC:
LLR: 2.96 (-2.94,2.94) [0.00,5.00]
Total: 159343 W: 34489 L: 33588 D: 91266
http://tests.stockfishchess.org/tests/view/5a8db9340ebc590297cc85b6
passed LTC:
LLR: 2.97 (-2.94,2.94) [0.00,5.00]
Total: 47491 W: 7825 L: 7517 D: 32149
http://tests.stockfishchess.org/tests/view/5a9456a80ebc590297cc8a89
It must be mentioned that a version of the PR with contempt 0
did not pass STC [0,5]. The version in the patch, which uses
default contempt 12, was found to be as strong as current master
on different matches against SF7 and SF8, both at STC and LTC.
One drawback maybe is that it raises the draw rate in self-play
from 56% to 59%, giving a little bit less sensitivity for SF
developpers to find evaluation improvements by selfplay tests
in fishtest.
Possible further work:
• tune the values accurately, while keeping in mind the drawrate issue
• check whether it is possible to remove linear and offset term
• try to simplify the S-shape curve
Bench: 5934644
2018-03-04 08:50:19 -07:00
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Joseph Ellis (jhellis3)
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2018-02-17 17:51:35 -07:00
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Joseph R. Prostko
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jundery
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Justin Blanchard
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2014-06-20 19:35:09 -06:00
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Kelly Wilson
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2018-02-17 17:51:35 -07:00
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Ken Takusagawa
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kinderchocolate
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Kiran Panditrao (Krgp)
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2014-06-20 19:35:09 -06:00
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Kojirion
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2018-02-17 17:51:35 -07:00
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Leonardo Ljubičić (GM)
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Leonid Pechenik (lp--)
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Linus Arver
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loco-loco
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Luca Brivio (lucabrivio)
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Lucas Braesch (lucasart)
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Lyudmil Antonov (lantonov)
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2018-02-20 09:10:37 -07:00
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Matthew Lai (matthewlai)
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2014-06-20 19:35:09 -06:00
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Matthew Sullivan
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2018-02-17 17:51:35 -07:00
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mbootsector
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Michael Byrne (MichaelB7)
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Michael Stembera (mstembera)
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Michel Van den Bergh (vdbergh)
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Mike Whiteley (protonspring)
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Miroslav Fontán (Hexik)
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Mohammed Li (tthsqe12)
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Nathan Rugg (nmrugg)
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Nicklas Persson (NicklasPersson)
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Niklas Fiekas (niklasf)
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2016-01-02 02:43:25 -07:00
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Oskar Werkelin Ahlin
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2014-06-20 19:35:09 -06:00
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Pablo Vazquez
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2016-01-02 02:43:25 -07:00
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Pascal Romaret
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2018-02-17 17:51:35 -07:00
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Pasquale Pigazzini (ppigazzini)
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Patrick Jansen (mibere)
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pellanda
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Ralph Stößer (Ralph Stoesser)
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2014-06-20 19:35:09 -06:00
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Raminder Singh
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2018-02-17 17:51:35 -07:00
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renouve
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Reuven Peleg
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2014-06-20 19:35:09 -06:00
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Richard Lloyd
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2018-02-17 17:51:35 -07:00
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Rodrigo Exterckötter Tjäder
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Ron Britvich
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Ronald de Man (syzygy1)
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Ryan Schmitt
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2014-06-20 19:35:09 -06:00
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Ryan Takker
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2018-02-17 17:51:35 -07:00
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Sergei Antonov (saproj)
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2016-01-02 02:43:25 -07:00
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sf-x
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2018-02-17 17:51:35 -07:00
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shane31
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Stefan Geschwentner (locutus2)
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Stefano Cardanobile (Stefano80)
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Stéphane Nicolet (snicolet)
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Thanar2
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2014-06-20 19:35:09 -06:00
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thaspel
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2018-02-17 17:51:35 -07:00
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Tom Vijlbrief (tomtor)
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Torsten Franz (torfranz)
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Uri Blass (uriblass)
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Vince Negri
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