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A flexible Tool for Model Building: the Relevant Transformation of the Inputs Network Approach

Pérez Amaral, Teodosio and Gallo, Giampiero M. and White, Halbert (2002) A flexible Tool for Model Building: the Relevant Transformation of the Inputs Network Approach. [Working Paper or Technical Report]


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A new method, called relevant transformation of the inputs network approach (RETINA) is proposed as a tool for model building and selection. It is designed to improve some of the shortcomings of neural networks.
It has the flexibility of neural network models, the concavity of the likelihood in the weights of the usual likelihood models, and the ability to identify a parsimonious set of attributes that are likely to be relevant for predicting out of sample outcomes.
RETINA expands the range of models by considering transformations of the original inputs; splits the sample in three disjoint subsamples, sorts the candidate regressors by a saliency feature, chooses the models in subsample 1, uses subsample 2 for parameter estimation and subsample 3 for cross-validation. It is modular, can be used as a data exploratory tool and is computationally feasible in personal computers.
In tests on simulated data, it achieves high rates of successes when the sample size or the R2 are large enough. As our experiments show, it is superior to alternative procedures such as the non negative garrote and forward and backward stepwise regression.

Item Type:Working Paper or Technical Report
Uncontrolled Keywords:RETINA
Subjects:Social sciences > Economics > Commerce
Series Name:Documentos de trabajo del Instituto Complutense de Análisis Económico (ICAE)
ID Code:7650

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Deposited On:26 Feb 2008
Last Modified:06 Feb 2014 07:55

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