.. _Parameters:

Appendix A - Parameters
=======================

This Appendix provides detailed descriptions of parameters that can be specified in the H2O algorithms. In addition, each parameter also includes the algorithms that support the parameter, whether the parameter is a hyperparameter (can be used in grid search), links to any related parameters, and R and Python examples showing the parameter in use. 

**Notes**:

- This Appendix is a work in progress.
- For parameters that are supported in multiple algorithms, the included example uses the GBM algorithm. 

.. toctree::
   :maxdepth: 2

   data-science/algo-params/balance_classes
   data-science/algo-params/binomial_double_trees
   data-science/algo-params/build_tree_one_node
   data-science/algo-params/categorical_encoding
   data-science/algo-params/checkpoint
   data-science/algo-params/class_sampling_factors
   data-science/algo-params/col_sample_rate
   data-science/algo-params/col_sample_rate_change_per_level
   data-science/algo-params/col_sample_rate_per_tree
   data-science/algo-params/distribution
   data-science/algo-params/fold_assignment
   data-science/algo-params/fold_column
   data-science/algo-params/histogram_type
   data-science/algo-params/huber_alpha
   data-science/algo-params/ignore_const_cols
   data-science/algo-params/ignored_columns
   data-science/algo-params/keep_cross_validation_fold_assignment
   data-science/algo-params/keep_cross_validation_predictions
   data-science/algo-params/learn_rate
   data-science/algo-params/learn_rate_annealing
   data-science/algo-params/max_abs_leafnode_pred
   data-science/algo-params/max_after_balance_size
   data-science/algo-params/max_depth
   data-science/algo-params/max_hit_ratio_k
   data-science/algo-params/max_runtime_secs
   data-science/algo-params/min_rows
   data-science/algo-params/min_split_improvement
   data-science/algo-params/model_id
   data-science/algo-params/mtries
   data-science/algo-params/nbins
   data-science/algo-params/nbins_cats
   data-science/algo-params/nbins_top_level
   data-science/algo-params/nfolds
   data-science/algo-params/ntrees
   data-science/algo-params/offset_column
   data-science/algo-params/pred_noise_bandwidth
   data-science/algo-params/quantile_alpha
   data-science/algo-params/sample_rate
   data-science/algo-params/sample_rate_per_class
   data-science/algo-params/score_each_iteration
   data-science/algo-params/score_tree_interval
   data-science/algo-params/seed
   data-science/algo-params/stopping_metric
   data-science/algo-params/stopping_rounds
   data-science/algo-params/stopping_tolerance
   data-science/algo-params/training_frame
   data-science/algo-params/tweedie_power
   data-science/algo-params/validation_frame
   data-science/algo-params/weights_column
   data-science/algo-params/y