Ítem
Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada | |
Hijazi, R. | |
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 | |
http://hdl.handle.net/2072/299067 | |
eng | |
Universitat de Girona. Departament d’Informàtica i Matemàtica Aplicada | |
Tots els drets reservats | |
Estadística matemàtica -- Congressos
Mathematical statistics -- Congresses Anàlisi multivariable -- Congressos Mathematical statistics -- Congresses |
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An EM-Algorithm Based Method to Deal with Rounded Zeros in Compositional Data under Dirichlet Models | |
info:eu-repo/semantics/conferenceObject | |
Recercat |