Need clarification on Prediction errors

June/30/2009

Could you clarify the following on prediction errors.

Which error i should take for comparing the algorithms.

Last time you clarified that correlation coefficient cannot a parameter for selecting the best predicting algorithm.

Now if you compare the MLP vs RF MLP has low Absolute errors where as RF has lower squared errors.

Pl clarify which algorithm i should consider for my numeric prediction.

Description	MLP -4H	RF
Correlation coefficient	0.247	0.535
Mean absolute error	3.692	3.742
Root mean squared error	4.915	4.6
Relative absolute error	57.59 %	58.37%
Root relative squared error	72.67 %	68.10%

Thanks in advance.

with warm regards

A.Ramakrishnan

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