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Bayes Estimate and Inference for Entropy and Information Index of Fit

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  • Thomas Mazzuchi
  • Ehsan Soofi
  • Refik Soyer

Abstract

This article defines a quantized entropy and develops Bayes estimates and inference for the entropy and a Kullback-Leibler information index of the model fit. We use a Dirichlet process prior for the unknown data-generating distribution with a maximum entropy candidate model as the expected distribution. This formulation produces prior and posterior distributions for the quantized entropy, the information index of fit, the moments, and the model parameters. The posterior mean of the quantized entropy provides a Bayes estimate of entropy under quadratic loss. The consistency of the Bayes estimates and the information index are shown. The implementation and the performances of the Bayes estimates are illustrated using data simulated from exponential, gamma, and lognormal distributions.

Suggested Citation

  • Thomas Mazzuchi & Ehsan Soofi & Refik Soyer, 2008. "Bayes Estimate and Inference for Entropy and Information Index of Fit," Econometric Reviews, Taylor & Francis Journals, vol. 27(4-6), pages 428-456.
    • Handle: RePEc:taf:emetrv:v:27:y:2008:i:4-6:p:428-456
    DOI: 10.1080/07474930801960311
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    Citations

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    Cited by:

    1. Billio, Monica & Casarin, Roberto & Costola, Michele & Pasqualini, Andrea, 2016. "An entropy-based early warning indicator for systemic risk," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 45(C), pages 42-59.
    2. Soofi, E.S. & Nystrom, P.C. & Yasai-Ardekani, M., 2009. "Executives' perceived environmental uncertainty shortly after 9/11," Computational Statistics & Data Analysis, Elsevier, vol. 53(9), pages 3502-3515, July.
    3. Asadi, Majid & Ebrahimi, Nader & Soofi, Ehsan S., 2018. "Optimal hazard models based on partial information," European Journal of Operational Research, Elsevier, vol. 270(2), pages 723-733.
    4. Majid Asadi & Nader Ebrahimi & Ehsan S. Soofi & Somayeh Zarezadeh, 2014. "New maximum entropy methods for modeling lifetime distributions," Naval Research Logistics (NRL), John Wiley & Sons, vol. 61(6), pages 427-434, September.

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