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Multi-Objective SPIBB: Seldonian Offline Policy Improvement with Safety Constraints in Finite MDPs

NeurIPS 2021 · Reinforcement learning › Offline RL · approach: Offline-to-online fine-tuning · 5 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add individual-objective safety constraints to scalarized policy improvement (MO-SPIBB)Offline policy improvement · Synthetic safety grid-world CMDPsfailure rateHelped
Relax the Soft-SPIBB policy-deviation constraint by increasing ε (ablation)MO-SPIBB · Synthetic safety grid-world CMDPsfailure rate: ε=0.1 -> ε=1.0Hurt
Use tuned ε for MO-SPIBB rather than fixed hyperparameters (ablation)MO-SPIBB · Synthetic safety grid-world CMDPsimprovement over baselineHelped
Use the extended empirical Bernstein bound instead of Student's t-test for HCPI safety testing (ablation)MO-HCPI · Synthetic safety grid-world CMDPsconservatismHurt
Remove rare state-action transitions from training rather than retaining them with a rarity penalty (ablation)Offline sepsis treatment policy · MIMIC-III sepsis tasksurvival return: 65.95 -> 11.26Hurt

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