Github user jingyimei commented on a diff in the pull request:
https://github.com/apache/madlib/pull/289#discussion_r201493839
--- Diff:
src/ports/postgres/modules/recursive_partitioning/random_forest.sql_in ---
@@ -249,9 +250,13 @@ forest_train(training_table_name,
</tr>
<tr>
<th>tree</th>
- <td>BYTEA8. Trained tree model stored in binary
+ <td>BYTEA8. Trained tree model stored in binary
format (not human readable).</td>
</tr>
+ <tr>
+ <th>impurity_var_importance</th>
+ <td>DOUBLE PRECISION[]. The gini impurity importance score for the
tree.</td>
--- End diff --
Also mention the order corresponds to the order of the variables as found
in 'cat_features' followed by the order of the 'con_features' in summary
table
---
