GBM¶

Supported HTTP methods and descriptions¶

URL¶

http://<h2oHost>:<h2oApiPort>/GBM.json

Input parameters¶

• classification, a boolean, <i>unimportant</i>

  Do classification or regression. Since version 1

• validation, a Frame, <i>unimportant</i>

  Validation frame. Since version 1

• ntrees, a int, <i>critical</i>

  Number of trees. Since version 1

• max_depth, a int, <i>critical</i>

  Maximum tree depth. Since version 1

• min_rows, a int, <i>secondary</i>

  Fewest allowed observations in a leaf (in R called ‘nodesize’). Since version 1

• nbins, a int, <i>secondary</i>

  Build a histogram of this many bins, then split at the best point. Since version 1

• score_each_iteration, a boolean, <i>unimportant</i>

  Perform scoring after each iteration (can be slow). Since version 1

• importance, a boolean, <i>unimportant</i>

  Compute variable importance (true/false).. Since version 1

• learn_rate, a double, <i>secondary</i>

  Learning rate, from 0. to 1.0. Since version 1

• grid_parallelism, a int, <i>secondary</i>

  Grid search parallelism. Since version 1

Output JSON elements¶

• _distribution, a long[]

  Class distribution. Since version 1, unimportant

HTTP response codes¶

200 OK Success and error responses are identical.