OUTPUT <output-options> </ subtreestat-option> ;
The OUTPUT statement allows several SAS data sets to be created.
You can specify the following output-options:
-
GROWTHSUBTREE=SAS-data-set
-
writes to the specified SAS-data-set a table that contains the requested statistical metrics of the subtrees that are created during growth.
-
IMPORTANCE=SAS-data-set
-
writes the importance of each variable to the specified SAS-data-set.
-
NODESTATS=SAS-data-set
-
writes a description of the final tree to the specified SAS-data-set.
-
PRUNESUBTREE=SAS-data-set
-
writes to the specified SAS-data-set a table that contains the requested statistical metrics of the subtrees that are created during pruning.
You can specify the following subtreestat-option:
-
SUBTREESTATS=(metric <metric ...>)
-
specifies the statistical metrics to write to the subtree data sets. The iteration number, number of leaves, and tree number
are always provided.
You can specify one or more of the following metrics.
- ENTROPY
-
calculates the entropy of the subtree.
- GINI
-
calculates the Gini statistic of the subtree.
- ASE
-
calculates the average square error of the subtree.
- MISC
-
calculates the misclassification rate of the subtree.
- SSE
-
calculates the sum of squares error of the subtree.
- ALL
-
enables all the statistics.
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