From 1a5c21dc56a30f4af3979fb47ec3681dc7077195 Mon Sep 17 00:00:00 2001 From: Joost VandeVondele Date: Sun, 7 Nov 2021 14:42:46 +0100 Subject: [PATCH] Tune a few NNUE related scaling parameters passed STC LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 102480 W: 26099 L: 25708 D: 50673 Ptnml(0-2): 282, 11637, 27003, 12044, 274 https://tests.stockfishchess.org/tests/view/618820e3d7a085ad008ef1dd passed LTC LLR: 2.93 (-2.94,2.94) <0.50,3.00> Total: 165512 W: 41689 L: 41112 D: 82711 Ptnml(0-2): 82, 17255, 47510, 17822, 87 https://tests.stockfishchess.org/tests/view/6188b470d7a085ad008ef239 closes https://github.com/official-stockfish/Stockfish/pull/3784 Bench: 6339548 --- src/evaluate.cpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/src/evaluate.cpp b/src/evaluate.cpp index a503b0c8..9fdadbb7 100644 --- a/src/evaluate.cpp +++ b/src/evaluate.cpp @@ -1091,9 +1091,9 @@ Value Eval::evaluate(const Position& pos) { v = Evaluation(pos).value(); // classical else { - int scale = 883 - + 32 * pos.count() - + 32 * pos.non_pawn_material() / 1024; + int scale = 898 + + 24 * pos.count() + + 33 * pos.non_pawn_material() / 1024; v = NNUE::evaluate(pos, true) * scale / 1024; // NNUE @@ -1102,7 +1102,7 @@ Value Eval::evaluate(const Position& pos) { } // Damp down the evaluation linearly when shuffling - v = v * (100 - pos.rule50_count()) / 100; + v = v * (207 - pos.rule50_count()) / 207; // Guarantee evaluation does not hit the tablebase range v = std::clamp(v, VALUE_TB_LOSS_IN_MAX_PLY + 1, VALUE_TB_WIN_IN_MAX_PLY - 1); -- 2.39.2