DUGi: Ítem | Recercat - An EM-Algorithm Based Method to Deal with Rounded Zeros in Compositional Data under Dirichlet Models

Ítem

Altres contribucions:	Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada
Autor:	Hijazi, R.
Resum:	Zeros in compositional data are classified into “rounded” zeros and “essential” zeros. The rounded zero corresponds to a small proportion or below detection limit value while the essential zero is an indication of the complete absence of the component in the composition. Several parametric and non-parametric imputation techniques have been proposed to replace rounded zeros and model the essential zeros under logratio model. In this paper, a new method based on EM algorithm is proposed for replacing rounded zeros. The proposed method is illustrated using simulated data
Accés al document:	http://hdl.handle.net/2072/299067
Llenguatge:	eng
Editor:	Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada
Drets:	Tots els drets reservats
Matèria:	Estadística matemàtica -- Congressos Mathematical statistics -- Congresses Anàlisi multivariable -- Congressos Mathematical statistics -- Congresses
Títol:	An EM-Algorithm Based Method to Deal with Rounded Zeros in Compositional Data under Dirichlet Models
Tipus:	info:eu-repo/semantics/conferenceObject
Repositori:	Recercat