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§5.3 Prompt-fixed 对比表(EfficientNet-B2 @ 384, leak-free test n=13,237)

格式:Test AUC / Sensitivity / F1

全量训练(n_train_real=114,209)

Config Old (prompt-bug) AUC / Sens / F1 New (prompt-fixed) AUC / Sens / F1 Δ (new − old) AUC / Sens / F1
Baseline (real only) 0.9612 / 0.8858 / 0.9047 0.9612 / 0.8858 / 0.9047 (baseline 复用)
G2 + 400 synth 0.9594 / 0.8749 / 0.9058 0.9609 / 0.8492 / 0.9085 +0.0015 / -0.0257 / +0.0027
G2 + 4k synth 0.9625 / 0.8868 / 0.9105 0.9553 / 0.8505 / 0.9043 -0.0072 / -0.0363 / -0.0062
G3 + 400 synth 0.9592 / 0.8920 / 0.9081 0.9614 / 0.8358 / 0.9020 +0.0022 / -0.0562 / -0.0061
G3 + 4k synth 0.9615 / 0.8513 / 0.9074 0.9589 / 0.8806 / 0.9049 -0.0026 / +0.0293 / -0.0025

小样本 10%(n_train_real=11,420)

Config Old (prompt-bug) AUC / Sens / F1 New (prompt-fixed) AUC / Sens / F1 Δ (new − old) AUC / Sens / F1
Baseline 10% real 0.9393 / 0.8295 / 0.8693 0.9393 / 0.8295 / 0.8693 (baseline 复用)
G2 + 400 synth (10%) 0.9377 / 0.8303 / 0.8681 0.9351 / 0.8257 / 0.8694 -0.0026 / -0.0046 / +0.0013
G2 + 4k synth (10%) 0.9341 / 0.8238 / 0.8684 0.9376 / 0.8141 / 0.8707 +0.0035 / -0.0097 / +0.0023
G3 + 400 synth (10%) 0.9375 / 0.8261 / 0.8699 0.9322 / 0.8139 / 0.8629 -0.0053 / -0.0122 / -0.0070
G3 + 4k synth (10%) 0.9366 / 0.8142 / 0.8696 0.9349 / 0.8108 / 0.8656 -0.0017 / -0.0034 / -0.0040

关键变化(仅看 Test AUC 提升)

配置 旧 ΔAUC vs baseline 新 ΔAUC vs baseline 新-旧 ΔAUC
G2 + 400 synth -0.0018 -0.0003 +0.0015
G2 + 4k synth +0.0013 -0.0059 -0.0072
G3 + 400 synth -0.0020 +0.0002 +0.0022
G3 + 4k synth +0.0003 -0.0023 -0.0026
G2 + 400 synth (10%) -0.0016 -0.0042 -0.0026
G2 + 4k synth (10%) -0.0052 -0.0017 +0.0035
G3 + 400 synth (10%) -0.0018 -0.0071 -0.0053
G3 + 4k synth (10%) -0.0027 -0.0044 -0.0017