ResearchBenchmarksParameter Estimation on Quartic potential model With OutliersParameter Estimation on Quartic potential model With OutliersFollow-0.0216Mean θ_1 Estimateγ-Stein-0.024364-0.0057070.012950.031607Nov 6, 2025Evaluation resultsMethodMethodLinksMean θ_1 EstimateMean θ_2 EstimateMean θ_3 EstimateRMSEγ-Steinγ=0.3γ=0.32025.11-0.02161.9387-0.43970.4542True2025.1102-0.5—MLE2025.110.0416-0.0733-0.02152.1311γ-Steinγ=0.5γ=0.52025.110.04752.3735-0.49680.545