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베이지안 로지스틱 회귀모형에서의 추론에 대한 연구

Inferential Problems in Bayesian Logistic Regression Models

  • 투고 : 20101000
  • 심사 : 20111100
  • 발행 : 2011.12.31

초록

기존의 frequentist 추론에 비해 Bayesian 추론에서의 가설 검정 및 모형 선택 문제는 학자들 간에 일치된 견해를 보이지 못하고 있으며 아직도 논란이 되는 것들이 많다. Bayesian 추론에서 가설 검정 및 모형 선택의 기준으로 널리 쓰이는 Bayes factor는 이해하기 쉬우나 여러 경우에 구하기 어려운 단점이 존재한다. 그 외에 다른 기준으로 Spiegelhalter 등 (2002)가 제시한 DIC(Deviance Information Criterion)과 frequentist 추론에서의 P-value에 대비되는 Bayesian P-value가 있다. 본 논문에서는 Swiss banknote 자료를 Bayesian 로지스틱 회귀모형으로 분석하고 관련 기준들을 구하여 각 기준들이 일관성 있는 결론을 보이는지 확인하고자 한다.

Model selection and hypothesis testing problems in Bayesian inference are still debated between scholars. Bayesian factors traditionally used as a criterion in Bayesian hypothesis testing and model selection, are easy to understand but sometimes hard to compute. In addition, there are other model selection criterions such as DIC(Deviance Information Criterion) by Spiegelhalter et al. (2002) and Bayesian P-values for testing. In this paper, we briefly introduce the Bayesian hypothesis testing and model selection procedure. In addition we have applied a Bayesian inference to Swiss banknote data by a fitting logistic regression model and computing several test statistics to see if they provide consistent results.

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참고문헌

  1. 김달호 (2004). , 자유아카데미.
  2. Bayarri, M. J. and Berger, J. (1998). P-values for Composite Null Models, ISDS Discussion Paper, 98-40, Duke University.
  3. Box, G. E. P. (1980). Sampling and Bayes inference in scienti c modeling and robustness, Journal of Royal Statistical Society, Series A, 143, 383-430. https://doi.org/10.2307/2982063
  4. Flurry, B. and Riedwyl, H. (1988). Multivariate Statistics: A Practical Approach, Chapman and Hall.
  5. Gelman, A., Meng, X. L. and Stern, H. S. (1996). Posterior predictive assessment of model finess via realized discrepancies (with discussion), Statistica Sinica, 6, 733-807.
  6. Jeffreys, H. (1961). Theory of Probability, 3rd Ed. Oxford University Press, New York.
  7. Kass, R. E. and Raftery, A. E. (1995). Bayes factors, Journal of American Statistical Association, 90, 773-795. https://doi.org/10.2307/2291091
  8. Marin, J. M. and Robert, C. P. (2007). Bayesian Core: A practical Approach to Computational Bayesian Statistics, Springer.
  9. Meng, X.-L. (1994). Posterior predictive p-values, Annals of Statistics, 22, 1142-1160. https://doi.org/10.1214/aos/1176325622
  10. Rubin, D. B. (1984). Bayesianly justi able and relevant frequency calculations for the applied statistician, Annals of Statistics, 12, 1151-1172. https://doi.org/10.1214/aos/1176346785
  11. Spiegelhalter, D. J., Best, N. G., Carlin, B. P. and van der Linde, A. (2002). Bayesian measures of model complexity and fit (with discussion), Journal of the Royal Statistical Society: Series B, 64, 583-639. https://doi.org/10.1111/1467-9868.00353