[R-pkgs] new package 'SeleMix' for selective editing

From: Teresa Buglielli <bugliell_at_istat.it>
Date: Fri, 23 Sep 2011 16:54:49 +0200


Dear R users,

we would like to announce that on the CRAN a new package (SeleMix version 0.8.1) for selective editing is available.

This package includes functions for identification of outliers and influential errors in numerical data. For each unit, it provides also anticipated values (predictions) for both observed and non observed variables. The method is based on explicitly modelling both true (error-free) data and error mechanism through a two-component Gaussian mixture. Specifically, true data (first mixture component) are supposed to follow normal or log-normal distribution. We assume that only a subset of data (second mixture component) is affected by error and that the error mechanism is specified through a Gaussian random variable with zero mean vector and covariance matrix proportional to the covariance matrix of the true data distribution.

We would appreciate any feedback

Sincerely,

Teresa Buglielli and Ugo Guarnera

-- 
Teresa Buglielli
Methods, Tools and Methodological Support
Italian National Institute of Statistics
bugliell_at_istat.it

Ugo Guarnera
Methods, Tools and Methodological Support
Italian National Institute of Statistics
guarnera_at_istat.it

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Received on Sat 24 Sep 2011 - 01:47:54 EST

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