Censored Bimodal Symmetric-Asymmetric Alpha-Power Model

• HUGO S. SALINAS ^[1] ; GUILLERMO MARTÍNEZ-FLÓREZ ^[2] ; GERMÁN MORENO-ARENAS ^[3]
  1. [1] Universidad de Atacama

     Universidad de Atacama

     Copiapo, Chile

     
  2. [2] Universidad de Córdoba

     Universidad de Córdoba

     Cordoba, España

     
  3. [3] Universidad Industrial de Santander

     Universidad Industrial de Santander

     Colombia

     

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• Localización: Revista Colombiana de Estadística, ISSN-e 2389-8976, ISSN 0120-1751, Vol. 36, Nº. 2, 2013, págs. 285-301
• Idioma: inglés
• Títulos paralelos:
  • Modelo bimodal censurado simétrico-asimétrico alpha-potencia
• Enlaces
  • Texto completo
• Resumen
  • español

    Se introducen los modelos potencia alfa simétricos asimétricos bimodales censurados con el fin de ajustar datos censurados con bimodalidad y altos niveles de sesgo y curtosis. Los momentos correspondientes son calculados, se considera la estimación máximo verosímil para los parámetros del modelo y se deriva la matriz de información observada. Se muestra la utilidad de los modelos propuestos a través de dos aplicaciones con datos censurados reales relacionados con la medición de HIV-1 RNA.

  • English

    We introduce the censored bimodal symmetric-asymmetric alpha-power models to adjust censored data with bimodality and high levels of skewness and kurtosis. The moments corresponding are computed, the maximum likelihood estimation for the model parameters is considered and the observed information matrix is derived. We show the appropriateness of the proposed models through two applications with censored real data related to HIV-1 RNA measurement.

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