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'''Floyd''',<br/>
an [[UCI]] compliant [[:Category:Open Source Engines|open source chess engine]] for study purposes and prototyping of new ideas by [[Marcel van Kervinck]], written in [[C]], and first released in October 2015 <ref>[http://www.talkchess.com/forum/viewtopic.php?t=57913 Floyd 0.5 released] by [[Marcel van Kervinck]], [[CCC]], October 11, 2015</ref> with a permissive license <ref>[https://github.com/kervinck/floyd/blob/master/LICENSE floyd/LICENSE at master · kervinck/floyd · GitHub]</ref> . Floyd can be build to run under [[Windows]], [[Linux]] and [[Mac OS]]. Floyd had its over the board tournament debut at the [[IGT 2016]] with a 50% score.
=Description=
==Evaluation==
Floyd's [[Evaluation|evaluation]] employs a vector of feature and weight pairs to calculate a [[Score|score]] as [https://en.wikipedia.org/wiki/Weighted_sum_model weighted sum]. In conjunction with a draw model <ref>[https://github.com/kervinck/floyd/blob/master/Docs/drawModel.txt floyd/drawModel.txt at master · kervinck/floyd · GitHub]</ref> using [https://en.wikipedia.org/wiki/Sigmoid_function sigmoid functions], the score is mapped to [[Pawn Advantage, Win Percentage, and ELOElo|winning probabilities]], suited for [[Automated Tuning#LogisticRegression|logistic regression]] tuning.
<pre>
def evaluate(board, wiloVector, drawVector):
=See also=
* [[Mathematician#RWFloyd|Mathematician - Robert W. Floyd (1936 - 2001)]]
* [[MSCP]]
* [[Rookie]]
* [https://en.wikipedia.org/wiki/Floyd%E2%80%93Steinberg_dithering Floyd–Steinberg dithering from Wikipedia]
* [https://en.wikipedia.org/wiki/Floyd%E2%80%93Warshall_algorithm Floyd–Warshall algorithm from Wikipedia]
* [[Videos#PinkFloyd:Category:Pink Floyd|Pink Floyd]] - [https://en.wikipedia.org/wiki/High_Hopes_%28Pink_Floyd_song%29 High Hopes], [https://en.wikipedia.org/wiki/The_Division_Bell The Division Bell], 1994, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: {{#evu:https://www.youtube.com/watch?v=7jMlFXouPk8|alignment=left|valignment=top}}
'''[[Engines|Up one Level]]'''
[[Category:Open Source]]
[[Category:UCI]]
[[Category:Disaster]]
[[Category:Meteorology]]
[[Category:Pink Floyd]]
