Displaying 1 result from an estimated 1 matches for "sp15".
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sp1
2008 Jan 31
1
random forest and vegetation data
...and lots of zeros, suddenly the splitting node information is not making sense.
Here is my situation. I have a matrix of study plots that each belong to one of three elevation classes and which each have percent cover class data for 15 plant species associated with them.
plot elev sp1 sp2 sp3? sp15
1 3 0 2 6? 5
2 0 0 0 1? 0
etc.
The species data are ordered factors from 0-9. When I run the algorithm using species cover values to predict elevation class, two species alone come up as the best predictors. That makes ecological sense in this setting, given the species ranges in quest...