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'''[[Main Page|Home]] * [[Evaluation]] * Discontinuity'''
'''Evaluation discontinuity''' occurs when two positions are assessed as markedly different, even though one can be reached from the other by a short sequence of reasonable moves. This usually happens at the transition between different [[Game Phases|game phases]], for example if the program uses a simple boolean switch to decide whether the position should be considered an endgame. This has a detrimental effect on program's [[Playing Strength|playing strength]], since at the transition points program begins to search for the ways of switching or not switching between game phases, and not for improving its position.
=See also=
* [[Evaluation Philosophy]]
* [[Game Phases]]
* [[Tapered Eval]]
=Publications=
* [[Hans Berliner]] ('''1979'''). ''[http://www.bkgm.com/articles/Berliner/EvaluationFunctionsLargeDomains/ On the Construction of Evaluation Functions for Large Domains]''. [[Conferences#IJCAI1979|IJCAI 1979]], Tokyo, Vol. 1
* [[Hans Berliner]] ('''1980'''). ''[http://www.bkgm.com/articles/Berliner/BackgammonProgramBeatsWorldChamp/ Backgammon Computer Program Beats World Champion]''. [https://en.wikipedia.org/wiki/Artificial_Intelligence_%28journal%29 Artificial Intelligence], Vol. 14, [http://www.bkgm.com/articles/Berliner/BackgammonProgramBeatsWorldChamp/#sec-4 4. Smoothness]
=Forum Posts=
* [http://www.talkchess.com/forum/viewtopic.php?t=23860&start=4 Re: Superlinear interpolator: a nice novelity ?] by [[Robert Hyatt]], [[CCC]], September 21, 2008
* [http://www.talkchess.com/forum/viewtopic.php?t=34637 Evaluation discontinuity] by [[Fermin Serrano]], [[CCC]], June 01, 2010
=External Links=
* [https://en.wikipedia.org/wiki/Discontinuity Discontinuity from Wikipedia]
* [https://en.wikipedia.org/wiki/Classification_of_discontinuities Classification of discontinuities from Wikipedia]
* [https://en.wikipedia.org/wiki/Smooth_function Smooth function from Wikipedia]
* [[Videos#GuruGuru|Guru Guru]] - Electric Junk (1971), [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: [https://en.wikipedia.org/wiki/Uli_Trepte Uli Trepte], [https://en.wikipedia.org/wiki/Mani_Neumeier Mani Neumeier], [http://de.wikipedia.org/wiki/Ax_Genrich Ax Genrich]
: {{#evu:https://www.youtube.com/watch?v=D2u5T-iOYpI|alignment=left|valignment=top}}
'''[[Evaluation|Up one Level]]'''
'''Evaluation discontinuity''' occurs when two positions are assessed as markedly different, even though one can be reached from the other by a short sequence of reasonable moves. This usually happens at the transition between different [[Game Phases|game phases]], for example if the program uses a simple boolean switch to decide whether the position should be considered an endgame. This has a detrimental effect on program's [[Playing Strength|playing strength]], since at the transition points program begins to search for the ways of switching or not switching between game phases, and not for improving its position.
=See also=
* [[Evaluation Philosophy]]
* [[Game Phases]]
* [[Tapered Eval]]
=Publications=
* [[Hans Berliner]] ('''1979'''). ''[http://www.bkgm.com/articles/Berliner/EvaluationFunctionsLargeDomains/ On the Construction of Evaluation Functions for Large Domains]''. [[Conferences#IJCAI1979|IJCAI 1979]], Tokyo, Vol. 1
* [[Hans Berliner]] ('''1980'''). ''[http://www.bkgm.com/articles/Berliner/BackgammonProgramBeatsWorldChamp/ Backgammon Computer Program Beats World Champion]''. [https://en.wikipedia.org/wiki/Artificial_Intelligence_%28journal%29 Artificial Intelligence], Vol. 14, [http://www.bkgm.com/articles/Berliner/BackgammonProgramBeatsWorldChamp/#sec-4 4. Smoothness]
=Forum Posts=
* [http://www.talkchess.com/forum/viewtopic.php?t=23860&start=4 Re: Superlinear interpolator: a nice novelity ?] by [[Robert Hyatt]], [[CCC]], September 21, 2008
* [http://www.talkchess.com/forum/viewtopic.php?t=34637 Evaluation discontinuity] by [[Fermin Serrano]], [[CCC]], June 01, 2010
=External Links=
* [https://en.wikipedia.org/wiki/Discontinuity Discontinuity from Wikipedia]
* [https://en.wikipedia.org/wiki/Classification_of_discontinuities Classification of discontinuities from Wikipedia]
* [https://en.wikipedia.org/wiki/Smooth_function Smooth function from Wikipedia]
* [[Videos#GuruGuru|Guru Guru]] - Electric Junk (1971), [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: [https://en.wikipedia.org/wiki/Uli_Trepte Uli Trepte], [https://en.wikipedia.org/wiki/Mani_Neumeier Mani Neumeier], [http://de.wikipedia.org/wiki/Ax_Genrich Ax Genrich]
: {{#evu:https://www.youtube.com/watch?v=D2u5T-iOYpI|alignment=left|valignment=top}}
'''[[Evaluation|Up one Level]]'''
