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Reward Hacking Mitigation on Excessive HH Harmless 1.0 (Evaluation)

8.2Reference Error RateIR3 Method B (Adversarial)
7.59211.69615.819.904Feb 23, 2026

Evaluation results

MethodLinks
IR3 Method B (Adversarial)type=Adversarial2026.028.291.2
IR3 Method C (Constrained)type=Constrained2026.028.890.9
IR3 Method A (Clean RL)type=Clean RL2026.0210.890.8
IR3 Method D (Distillation)type=Distillation2026.0211.590.2
InfoRM2026.0214.590.5
Length Penaltyalpha=5e-42026.0216.889
KL Regularizationbeta=2e-22026.0218.288.2
Reward Clippingc=42026.0219.589.2
PPO Clippingepsilon=0.12026.0220.189.5
PPO on R_proxy2026.0223.489.8