Article ID: | iaor2006644 |
Country: | Portugal |
Volume: | 25 |
Issue: | 1 |
Start Page Number: | 105 |
End Page Number: | 121 |
Publication Date: | Jun 2005 |
Journal: | Investigao Operacional |
Authors: | Santos Omar J.S., Milioni Armando Z. |
Keywords: | statistics: data envelopment analysis |
In this paper we present a Mixture of Local Experts Model (MLEM) for data classification. The discriminant tools applied are Fisher's Discriminant Analysis, Logistic Regression and a non-parametric model called Extended DEA-DA. Using real data, we compare the results obtained with the MLEM, which requires data clusterization and solution investigation on each cluster, against results obtained with a more orthodox approach, which is classification over the entire data set. The main conclusion is that even though it seems to be a promising technique, the additional effort in building an MLEM does not assure better results.