hex.tree

Class SharedTreeModel.SharedTreeOutput

java.lang.Object

water.Iced

hex.Model.Output

hex.tree.SharedTreeModel.SharedTreeOutput

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, water.Freezable

Direct Known Subclasses:

DRFModel.DRFOutput, GBMModel.GBMOutput

Enclosing class:

SharedTreeModel<M extends SharedTreeModel<M,P,O>,P extends SharedTreeModel.SharedTreeParameters,O extends SharedTreeModel.SharedTreeOutput>

public abstract static class SharedTreeModel.SharedTreeOutput
extends hex.Model.Output

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
double	_init_f InitF value (for zero trees) f0 = mean(yi) for gaussian f0 = log(yi/1-yi) for bernoulli For GBM bernoulli, the initial prediction for 0 trees is p = 1/(1+exp(-f0)) From this, the mse for 0 trees (null model) can be computed as follows: mean((yi-p)^2)
int	_ntrees Number of trees actually in the model (as opposed to requested)
hex.ScoreKeeper[]	_scored_train
hex.ScoreKeeper[]	_scored_valid
long[]	_training_time_ms Training time
water.Key<CompressedTree>[][]	_treeKeys Trees get big, so store each one seperately in the DKV.
TreeStats	_treeStats More indepth tree stats
water.util.TwoDimTable	_variable_importances Variable importances computed during training
hex.VarImp	_varimp

Fields inherited from class hex.Model.Output

_cross_validation_metrics, _cross_validation_models, _cross_validation_predictions, _distribution, _domains, _end_time, _hasFold, _hasOffset, _hasWeights, _isSupervised, _model_metrics, _model_summary, _modelClassDist, _names, _priorClassDist, _run_time, _scoring_history, _start_time, _status, _training_metrics, _validation_metrics

Constructor Summary

Constructors

Constructor and Description
SharedTreeModel.SharedTreeOutput(SharedTree b, double mse_train, double mse_valid)

Method Summary

Methods

Modifier and Type	Method and Description
void	addKTrees(DTree[] trees)
CompressedTree	ctree(int tnum, int knum)
java.lang.String	toStringTree(int tnum, int knum)

Methods inherited from class hex.Model.Output

addModelMetrics, classNames, foldIdx, foldName, getModelCategory, hasFold, hasOffset, hasWeights, isClassifier, isSupervised, nclasses, nfeatures, offsetIdx, offsetName, printTwoDimTables, responseIdx, responseName, toString, weightsIdx, weightsName

Methods inherited from class water.Iced

clone, frozenType, read_impl, read, readExternal, readJSON_impl, readJSON, toJsonString, write_impl, write, writeExternal, writeJSON_impl, writeJSON

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

_init_f

public double _init_f

InitF value (for zero trees) f0 = mean(yi) for gaussian f0 = log(yi/1-yi) for bernoulli For GBM bernoulli, the initial prediction for 0 trees is p = 1/(1+exp(-f0)) From this, the mse for 0 trees (null model) can be computed as follows: mean((yi-p)^2)

_ntrees

public int _ntrees

Number of trees actually in the model (as opposed to requested)

_treeStats

public final TreeStats _treeStats

More indepth tree stats

_treeKeys

public water.Key<CompressedTree>[][] _treeKeys

Trees get big, so store each one seperately in the DKV.

_scored_train

public hex.ScoreKeeper[] _scored_train

_scored_valid

public hex.ScoreKeeper[] _scored_valid

_training_time_ms

public long[] _training_time_ms

Training time

_variable_importances

public water.util.TwoDimTable _variable_importances

Variable importances computed during training

_varimp

public hex.VarImp _varimp

Constructor Detail

SharedTreeModel.SharedTreeOutput

public SharedTreeModel.SharedTreeOutput(SharedTree b,
                                double mse_train,
                                double mse_valid)

Method Detail

addKTrees

public void addKTrees(DTree[] trees)

ctree

public CompressedTree ctree(int tnum,
                   int knum)

toStringTree

public java.lang.String toStringTree(int tnum,
                            int knum)