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First published online March 4, 2026
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Parameter Estimation for Two Logistic Populations with Fuzzy Data: A Comparative Study of MLE and Bayesian Methods

Lingutla Vijay Kumar https://orcid.org/0009-0005-6449-2205, Nadiminti Nagamani https://orcid.org/0000-0002-5518-6653 [email protected], and R. K. Davala https://orcid.org/0000-0003-1896-322XView all authors and affiliations
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https://doi.org/10.1177/15741699261424809

Abstract

This study addresses the challenge of estimating parameters for two logistic populations that share a common scale parameter but have different location parameters in the presence of fuzzy data. To handle these complexities, both Maximum Likelihood Estimation (MLE) and Bayesian methods are employed. Asymptotic confidence intervals are constructed using ML estimates. For Bayesian estimation, a conjugate prior is utilized, and Bayes estimators are approximated using Lindley’s method due to the lack of closed-form solutions. Furthermore, Approximate Bayesian Computation (ABC) and Markov Chain Monte Carlo (MCMC) techniques, including Hamiltonian Monte Carlo (HMC) and the Metropolis–Hastings (MH) algorithm, are utilized to sample from the posterior distributions and construct Highest Posterior Density (HPD) intervals. A detailed comparative analysis of MLE, Lindley’s approximation, ABC, HMC, and MH is conducted to assess their performance. The effectiveness of the proposed methodology is demonstrated using a real-world dataset under fuzzy conditions.

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