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'''Álvaro Begué''',<br/>
a Spanish [[Checkers|computer checkers]], [[Go|computer go]] and computer chess programmer with expertise in [[Learning|machine learning]] and [[Automated Tuning|automated tuning]], along with [[José Manuel Morán]] co-author of the Spanish Checkers <ref>[https://boardgamegeek.com/boardgame/36250/spanish-checkers Spanish Checkers | Board Game | BoardGameGeek]</ref> program ''Torquemada'' <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=96 Ruy Lopez' ICGA Tournaments]</ref> <ref>[https://en.wikipedia.org/wiki/Antonio_de_Torquemada Antonio de Torquemada from Wikipedia]</ref> and the chess program [[Ruy Lopez]]. Along with [[John Tromp]], he is co-author of the Go playing program ''Dimwit'' <ref>[http://www.computer-go.info/db/oprog.php?a=Dimwit Computer-go.info - Details of Program: Dimwit]</ref>.
Since 2013, Álvaro is in the process to write a new chess engine <ref>[http://www.talkchess.com/forum/viewtopic.php?t=47268 Suggestions for a sparring partner] by [[Álvaro Begué]], [[CCC]], February 19, 2013</ref>. In November 2016, he published the open source [[Automated Tuning|tuning]] code [[RuyTune]], an instance of a [[Automated Tuning#LogisticRegression|logistic regression]] performing [https://en.wikipedia.org/wiki/Limited-memory_BFGS limited-memory BFGS] along with [https://en.wikipedia.org/wiki/Automatic_differentiation#Reverse_accumulation reverse-mode automatic differentiation] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=62056 C++ code for tuning evaluation function parameters] by [[Álvaro Begué]], [[CCC]], November 10, 2016</ref> <ref>[https://bitbucket.org/alonamaloh/ruy_tune alonamaloh / ruy_tune — Bitbucket]</ref>, and in June 2017 he published the [[:Category:Open Source|open source engine]] [[RuyDos]] <ref> [http://www.talkchess.com/forum/viewtopic.php?t=64138 RuyDos publicly available] by [[Álvaro Begué]], [[CCC]], June 01, 2017</ref>, co-authored by José Manuel Morán <ref>[https://bitbucket.org/alonamaloh/ruydos/src/88d7ffc1026339c334ee75d234a8df9e6af2ca34/LICENSE?at=default alonamaloh / RuyDos / source / LICENSE — Bitbucket]</ref>.
