Probabilistic usage of subsequent buckets #3556
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I think this should only be done when |
xoto10
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Jun 15, 2021
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Yes, like in #3492 |
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can you please rebase this test on the new net, correct it for the 'adjusted' argument of evaluate, and give it one more test on fishtest? |
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@vondele Direct LTC? |
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yes, that's fine with me. |
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After conducting a series of experimental tests, it seems that using a subsequent bucket to have a second opinion on the evaluation of a position can be beneficial. However, the precise condition when to call is challenging to find and maybe there is even no such condition, so we just do it probabilistically. This patch also serves to smooth the transition between buckets since the current implementation is quite drastic in changing buckets at the boundary piece counts.
STC:
LLR: 2.96 (-2.94,2.94) <-0.50,2.50>
Total: 56064 W: 4950 L: 4744 D: 46370
Ptnml(0-2): 185, 3831, 19794, 4037, 185
https://tests.stockfishchess.org/tests/view/60c74bbd457376eb8bcaaf4c
LTC:
LLR: 2.97 (-2.94,2.94) <0.50,3.50>
Total: 60648 W: 2104 L: 1929 D: 56615
Ptnml(0-2): 25, 1739, 26629, 1898, 33
https://tests.stockfishchess.org/tests/view/60c7b780457376eb8bcaafb1
Bench: 4971722