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Generalised likelihood profiles for models with intractable likelihoods

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Abstract

Likelihood profiling is an efficient and powerful frequentist approach for parameter estimation, uncertainty quantification and practical identifiablity analysis. Unfortunately, these methods cannot be easily applied for stochastic models without a tractable likelihood function. Such models are typical in many fields of science, rendering these classical approaches impractical in these settings. To address this limitation, we develop a new approach to generalising the methods of likelihood profiling for situations when the likelihood cannot be evaluated but stochastic simulations of the assumed data generating process are possible. Our approach is based upon recasting developments from generalised Bayesian inference into a frequentist setting. We derive a method for constructing generalised likelihood profiles and calibrating these profiles to achieve desired frequentist coverage for a given coverage level. We demonstrate the performance of our method on realistic examples from the literature and highlight the capability of our approach for the purpose of practical identifability analysis for models with intractable likelihoods.

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Data Availability

Implementations of the generalised likelihood profile method and calibration are provide on GitHub at https://github.com/davidwarne/GeneralisedLikelihoodProfilesalong with example usage scripts for the describe models in this manuscript.

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Acknowledgements

This project was supported by the Australian Research Council (FT210100260 and DP230100025). DJW thanks Queensland University of Technology for support through the Early Career Researcher support scheme. We thank the two anonymous reviewers for insightful and constructive comments.

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Contributions

CD, MJS, and DJW designed the research. DJW, OJM, and EJC provided analytical tools. DJW, CD, MJS, and EJC provided computational tools. DJW performed the analysis. DJW, OJM, and CD analysed the results. All authors contributed to writing, revising and approving the final manuscript.

Corresponding author

Correspondence to David J. Warne.

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Warne, D.J., Maclaren, O.J., Carr, E.J. et al. Generalised likelihood profiles for models with intractable likelihoods. Stat Comput 34, 50 (2024). https://doi.org/10.1007/s11222-023-10361-w

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  • DOI: https://doi.org/10.1007/s11222-023-10361-w

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