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02-07-2018 04:16 PM

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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## Re: Getting a proximity matrix from a random forest

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02-23-2018
05:12 PM

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Posted in reply to SAShole

02-09-2018 03:47 PM

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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## Re: Getting a proximity matrix from a random forest

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02-23-2018
05:12 PM

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Posted in reply to SAShole

02-09-2018 03:47 PM

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