GBM

Supported HTTP methods and descriptions

URL

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

Input parameters

• destination_key, a Key

  Destination key. Since version 1

• source, a Frame

  Source frame. Since version 1

Possible JSON error field returns:

• Argument ‘source’ error: Argument ‘source’ is required, but not specified

• cols, a int[]

  Input columns (Indexes start at 0). Since version 1

• ignored_cols, a int[]

  Ignored columns by name and zero-based index. Since version 1

• ignored_cols_by_name, a int[]

  Ignored columns by name. Since version 1

• response, a Vec

  Column to use as class. Since version 1

Possible JSON error field returns:

• Argument ‘response’ error: Argument ‘response’ is required, but not specified

• classification, a boolean

  Do Classification or regression. Since version 1

• validation, a Frame

  Validation frame. Since version 1

• ntrees, a int

  Number of trees. Since version 1

• max_depth, a int

  Maximum tree depth. Since version 1

• min_rows, a int

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

• nbins, a int

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

• score_each_iteration, a boolean

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

• importance, a boolean

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

• learn_rate, a double

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

• grid_parallelism, a int

  Grid search parallelism. Since version 1

Output JSON elements

• response_info, a ResponseInfo

  Response stats and info.. Since version 1

• h2o, a String

  H2O cloud name.. Since version 1

• node, a String

  Node serving the response.. Since version 1

• time, a long

  Request processing time.. Since version 1

• status, a Status

  Response status. Since version 1

• redirect_url, a String

  Redirect name.. Since version 1

• job_key, a Key

  Job key. Since version 1

• description, a String

  Job description. Since version 1

• start_time, a long

  Job start time. Since version 1

• end_time, a long

  Job end time. Since version 1

• exception, a String

  Exception. Since version 1

• state, a JobState

  Job state. Since version 1

• _distribution, a long[]

  Class distribution. Since version 1

HTTP response codes

200 OK Success and error responses are identical.