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=Computer Chess=
Michel Van den Bergh's professional interests in mathematics is supplemented by chess and computer chess programming. He worked on [[Toga|Toga II]] [https://en.wikipedia.org/wiki/POSIX Posix] ports <ref>[http://hardy.uhasselt.be/Toga/posix_versions/ Posix ports of some recent version of Toga II] by [[Michel Van den Bergh]]</ref>, on [[icsdrone]], an interface between an ICS ([[Chess Server|Internet Chess Server]]) and a chess engine supporting the [[Chess Engine Communication Protocol]] <ref>[http://hardy.uhasselt.be/Toga/icsdroneng-release/OVERVIEW.txt icsdroneng - Interface between an xboard chess engine and an ICS]</ref>, and made an attempt to transform [[GNU Chess]] into a modern Chess Engine Communication Protocol compliant engine. He is in the process to improve version 5 with various [[Static Exchange Evaluation|SEE]] based [[Pruning|pruning]] techniques and optimizations, where SEESign is faster to determine if the SEE value is below some threshold than computing its actual value <ref>[http://www.talkchess.com/forum/viewtopic.php?topic_view=threads&p=514587 Re: GNU Chess 5.07.175b released] by [[Michel Van den Bergh]], [[CCC]], April 14, 2013</ref>, and further applied [[Automated Tuning|parameter tuning]] using [[Rémi Coulom|Rémi Coulom's]] [[CLOP]], Confident Local Optimization for Noisy Black-Box Parameter Tuning <ref>[http://www.talkchess.com/forum/viewtopic.php?t=47776 GNU Chess 5.07.175b released] by [[Michel Van den Bergh]], [[CCC]], April 13, 2013</ref>. More recently, Michel Van den Bergh is engaged in [[Match Statistics|match statistics]] and [[Match Statistics#SPRT|sequential probability ratio test]].
=Selected Publications=
* [[Mathematician#SSpenko|Špela Špenko]], [[Michel Van den Bergh]] ('''2017'''). ''Non-commutative crepant resolutions for some toric singularities I''. [https://arxiv.org/abs/1701.05255 arXiv:1701.05255] <ref>[https://en.wikipedia.org/wiki/Crepant_resolution Crepant resolution from Wikipedia]</ref>
* [[Mathematician#SSpenko|Špela Špenko]], [[Michel Van den Bergh]] ('''2017'''). ''Non-commutative crepant resolutions for some toric singularities II''. [https://arxiv.org/abs/1707.08245 arXiv:1707.08245]
* [[Michel Van den Bergh]] ('''2017'''). ''A Practical Introduction to the GSPRT''. [http://hardy.uhasselt.be/Toga/GSPRT_approximation.pdf pdf] » [[Match Statistics#SPRT|SPRT]] <ref> [[Mathematician#XiaoouLi|Xiaoou Li]], [[Mathematician#JingchenLiu|Jingchen Liu]], [[Mathematician#ZhiliangYing|Zhiliang Ying]] ('''2014'''). ''[https://www.tandfonline.com/doi/abs/10.1080/07474946.2014.961861 Generalized Sequential Probability Ratio Test for Separate Families of Hypotheses]''. [https://www.tandfonline.com/loi/lsqa20?open=36&year=2017&repitition=0 Sequential Analysis], Vol. 33, No. 4, [http://stat.columbia.edu/~jcliu/paper/GSPRT_SQA3.pdf pdf]</ref>
* [[Mathematician#SSpenko|Špela Špenko]], [[Michel Van den Bergh]] ('''2019'''). ''A class of perverse schobers in Geometric Invariant Theory''. [https://arxiv.org/abs/1908.04213 arXiv:1908.04213] <ref>[https://en.wikipedia.org/wiki/Perverse_sheaf Perverse sheaf from Wikipedia]</ref>
* [[Michel Van den Bergh]] ('''2019'''). ''The Generalized Maximum Likelihood Ratio for the Expectation Value of a Distribution''. [http://hardy.uhasselt.be/Fishtest/support_MLE_multinomial.pdf pdf]
=Forum Posts=
* [http://www.talkchess.com/forum/viewtopic.php?t=24108 Linux port of newer versions of TogaII] by [[Michel Van den Bergh]], [[CCC]], October 01, 2008
* [http://www.talkchess.com/forum/viewtopic.php?p=230318?start=8 Re: Derivatives are real programs too] by [[Michel Van den Bergh]], [[CCC]], November 06, 2008
* [http://www.talkchess.com/forum/viewtopic.php?t=25582 Polyglot now supports the UCI protocol:-)] by [[Michel Van den Bergh]], [[CCC]], December 22, 2008 » [[PolyglotPolyGlot]], [[UCI]]
* [http://www.talkchess.com/forum/viewtopic.php?t=30036 Can someone explain this?] by [[Michel Van den Bergh]], [[CCC]], October 07, 2009 » [[Toga]], [[History Leaf Pruning]]
* [http://www.talkchess.com/forum/viewtopic.php?t=30326 Info from timeout search] by [[Michel Van den Bergh]], [[CCC]], October 26, 2009
* [http://www.talkchess.com/forum/viewtopic.php?t=51000 Two fold repetition rule] by [[Michel Van den Bergh]], [[CCC]], January 22, 2014 » [[Repetitions]]
==2015 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=55893 Script for computing SPRT probabilities] by [[Michel Van den Bergh]], [[CCC]], April 05, 2015 » [[Match Statistics#SPRT|SPRT]]
* [http://www.talkchess.com/forum/viewtopic.php?t=57465 The SPRT without draw model, elo model or whatever...] by [[Michel Van den Bergh]], [[CCC]], September 01, 2015
: [http://talkchess.com/forum/viewtopic.php?t=57465&start=19 Re: The SPRT without draw model, elo model or whatever..] by [[Michel Van den Bergh]], [[CCC]], August 18, 2016 » [[Match Statistics#SPRT|SPRT]] [[Python]] code <ref>[http://hardy.uhasselt.be/Toga/GSPRT_approximation.pdf GSPRT approximation] (pdf) by [[Michel Van den Bergh]]</ref>
* [http://www.talkchess.com/forum/viewtopic.php?t=66793 Elo measurement of contempt in SF in self-play] by [[Michel Van den Bergh]], [[CCC]], March 10, 2018 » [[Contempt Factor|Contempt]], [[Playing Strength]], [[Stockfish]]
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=69407 Fixed nodes games and the pentanomial model] by [[Michel Van den Bergh]], [[CCC]], December 29, 2018
==2020 ...==
* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=72962&start=6 Re: Stockfish Reverts 5 Recent Patches] by [[Michel Van den Bergh]], [[CCC]], February 02, 2020
=External Links=
* [http://hardy.uhasselt.be/personal/vdbergh/Publications/michel_pub.html Publications of Michel Van den Bergh]
* [https://en.wikipedia.org/wiki/Michel_Van_den_Bergh Michel Van den Bergh from Wikipedia]
* [httphttps://genealogy.math.ndsu.nodak.edu/id.php?id=52121 The Mathematics Genealogy Project - Michel Van den Bergh]* [httphttps://scholar.google.com/citations?user=DT8oL8AAAAAJ&hl=en Michel Van den Bergh - Google Scholar Citations]* [httphttps://owpdbopc.mfo.de/person_detail?id=6692 Details for Michel Van den Bergh], [https://en.wikipedia.org/wiki/Oberwolfach Oberwolfach] Photo Collection
==Computer Chess==
* [http://hardy.uhasselt.be/Toga/ Some chess stuff] by [[Michel Van den Bergh]]
* [httphttps://hardygithub.uhasseltcom/vdbergh vdbergh · GitHub]* [https://github.becom/Togavdbergh/book_format.html Polyglot book format] by [[Michel Van den Bergh]] » [[Polyglot]pentanomial GitHub - vdbergh/pentanomial: SPRT for pentanomial frequencies and simulation tools]* [httphttps://hardygithub.uhasselt.becom/Togavdbergh/posix_versionssimul GitHub - vdbergh/ Posix ports of some recent version of Toga II] by [[Michel Van den Bergh]] » [[Toga]simul: A multi-threaded pentanomial simulator]
=References=
[[Category:Mathematician|Van den Bergh]]
[[Category:Chess Programmer|Van den Bergh]]
[[Category:Stockfish Contributor|Van den Bergh]]
