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Getting a proximity matrix from a random forest

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Posts: 63

Getting a proximity matrix from a random forest

Is it possible to get a proximity matrix from a random forest in SAS? Currently the only way I know how to do this is by using the R package randomForest.

 

Thanks!

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SAS Employee
Posts: 43

Re: Getting a proximity matrix from a random forest

No.  Proximity matrices have N^2 elements. SAS forest algorithms are designed to handle millions of observations. The proximity matrices would be too large.  There hasn't been sufficient user interest to motivate figuring out some solution.

-Padraic

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