• Title/Summary/Keyword: limiting posterior distribution

Search Result 3, Processing Time 0.017 seconds

A Bayesian Approach to Finite Population Sampling Using the Concept of Pivotal Quantity

  • Hwang, Hyungtae
    • Communications for Statistical Applications and Methods
    • /
    • v.10 no.3
    • /
    • pp.647-654
    • /
    • 2003
  • Bayesian probability models for finite populations are considered assuming so-called the super-population. We find the posterior distribution of population mean by a new approach, using the concept of pivotal quantity for the small sample case. A large sample theory is also treated throught the concept of asymptotically pivotal quantity.

Local Sensitivity Analysis using Divergence Measures under Weighted Distribution

  • Chung, Younshik;Dey, Dipak K.
    • Journal of the Korean Statistical Society
    • /
    • v.30 no.3
    • /
    • pp.467-480
    • /
    • 2001
  • This paper considers the use of local $\phi$-divergence measures between posterior distributions under classes of perturbations in order to investigate the inherent robustness of certain classes. The smaller value of the limiting local $\phi$-divergence implies more robustness for the prior or the likelihood. We consider the cases when the likelihood comes form the class of weighted distribution. Two kinds of perturbations are considered for the local sensitivity analysis. In addition, some numerical examples are considered which provide measures of robustness.

  • PDF

THE RETROSPECTIVE STUDY OF INTRAFASCIAL INFECTION FROM ODONTOGENIC INFECTION IN ORAL AND MAXILLOFACIAL REGION (구강악안면영역의 치성감염으로 인한 근막간극 감염에 대한 회귀적 연구)

  • Kim, Sung-Hyuck;Lee, Jae-Hoon
    • Maxillofacial Plastic and Reconstructive Surgery
    • /
    • v.29 no.1
    • /
    • pp.42-49
    • /
    • 2007
  • Infections in oral and maxillofacial region are relativley common and self-limiting, but in some cases, infections spread to adjacent hard and soft tissue and to cause any complication, even threaten life. So we made retrospective study of patients with interfascial infection who had been hospitalized and been treated by surgical treatment in Dankook university about 10 years. We reviewed the charts of patient with interfascial infection from 1995 to 2005. The result were as follows: 1. In gender & age distribution, male(54.2%) & fouth decade were most frequently. 2. The most common cause of infection was dental caries(55.2%) and the most of involving teeth was lower posterior teeth(44.1%). 3. Submandibular space is most frequently involving space and most infection involved mainly one space. 4. The patients with systemic disease were 38.2%. Diabetic mellitus was 87.2% of systemic diease. The admission period was 19.5 days in systemic disease. 5. The most microorganism in culture was Streptococcus Viridans(36.2%) in all patient. Klebsiella Pneumoniae was found most in Diabetic Mellitus. 6. The patient were mainly treated I&D on admission day. Of them 5(1.1%) patients were received tracheostomy. 7. Serum albumin, CRP and body weight are associated with Nutritional Risk Index(NRI). High risk patient group according to NRI classification showed higher rate of complications & mortality. 8. The patients with complication were 28(6.7%) persons. 4(0.9%) patients were expired. Nutritional Risk Index was helpful to predict the prognosis. When interfascial infection starts to spread, we must pay attention to airway management. Fluid therapy with nutritional may support to healing of wound.