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Remove material imbalance param when adjusting optimism

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Passed non-regression STC:
https://tests.stockfishchess.org/tests/view/664d033d830eb9f886616aff
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 102144 W: 26283 L: 26135 D: 49726
Ptnml(0-2): 292, 12201, 25991, 12243, 345

Passed non-regression LTC:
https://tests.stockfishchess.org/tests/view/664d5c00830eb9f886616cb3
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 250032 W: 63022 L: 63036 D: 123974
Ptnml(0-2): 103, 27941, 68970, 27871, 131

closes https://github.com/official-stockfish/Stockfish/pull/5284

Bench: 1330940
This commit is contained in:
Linmiao Xu 2024-05-21 16:24:49 -04:00 • committed by Disservin
parent 72a345873d
commit 365aa85dce
1 changed files with 2 additions and 2 deletions
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4
src/evaluate.cpp
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@ -73,8 +73,8 @@ Value Eval::evaluate(const Eval::NNUE::Networks& networks,
smallNet = false;
}
// Blend optimism and eval with nnue complexity and material imbalance
optimism += optimism * (nnueComplexity + std::abs(simpleEval - nnue)) / 620;
// Blend optimism and eval with nnue complexity
optimism += optimism * nnueComplexity / 512;
nnue -= nnue * (nnueComplexity * 5 / 3) / 32082;
v = (nnue