ResearchBenchmarksParameter Estimation on Quartic potential model No OutliersParameter Estimation on Quartic potential model No OutliersFollow0.0071Mean θ_1 Estimateγ-Stein-0.081196-0.058273-0.03535-0.012427Nov 6, 2025Evaluation resultsMethodMethodLinksMean θ_1 EstimateMean θ_2 EstimateMean θ_3 EstimateRMSEγ-Steinγ=0.3γ=0.32025.110.00711.9241-0.43410.4128True2025.1102-0.5—MLE2025.11-0.00432.0653-0.52040.2745γ-Steinγ=0.5γ=0.52025.11-0.07782.956-0.6491.4536