Parameters of H2OGAM¶
Affected Classes¶
ai.h2o.sparkling.ml.algos.H2OGAMai.h2o.sparkling.ml.algos.classification.H2OGAMClassifierai.h2o.sparkling.ml.algos.regression.H2OGAMRegressor
Parameters¶
Each parameter has also a corresponding getter and setter method. (E.g.:
label->getLabel(),setLabel(...))
- betaConstraints
Data frame of beta constraints enabling to set special conditions over the model coefficients.
Scala default value:
null; Python default value:None- ignoredCols
Names of columns to ignore for training.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- alphaValue
Distribution of regularization between the L1 (Lasso) and L2 (Ridge) penalties. A value of 1 for alpha represents Lasso regression, a value of 0 produces Ridge regression, and anything in between specifies the amount of mixing between the two. Default value of alpha is 0 when SOLVER = ‘L-BFGS’; 0.5 otherwise.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- aucType
Set default multinomial AUC type. Possible values are
"AUTO","NONE","MACRO_OVR","WEIGHTED_OVR","MACRO_OVO","WEIGHTED_OVO".Default value:
"AUTO"Also available on the trained model.
- balanceClasses
Balance training data class counts via over/under-sampling (for imbalanced data).
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- betaEpsilon
Converge if beta changes less (using L-infinity norm) than beta esilon, ONLY applies to IRLSM solver .
Scala default value:
1.0e-4; Python default value:1.0E-4Also available on the trained model.
- bs
Basis function type for each gam predictors, 0 for cr.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- classSamplingFactors
Desired over/under-sampling ratios per class (in lexicographic order). If not specified, sampling factors will be automatically computed to obtain class balance during training. Requires balance_classes.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- coldStart
Only applicable to multiple alpha/lambda values when calling GLM from GAM. If false, build the next model for next set of alpha/lambda values starting from the values provided by current model. If true will start GLM model from scratch.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- columnsToCategorical
List of columns to convert to categorical before modelling
Scala default value:
Array(); Python default value:[]- computePValues
Request p-values computation, p-values work only with IRLSM solver and no regularization.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- convertInvalidNumbersToNa
If set to ‘true’, the model converts invalid numbers to NA during making predictions.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- convertUnknownCategoricalLevelsToNa
If set to ‘true’, the model converts unknown categorical levels to NA during making predictions.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- customMetricFunc
Reference to custom evaluation function, format: language:keyName=funcName.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- detailedPredictionCol
Column containing additional prediction details, its content depends on the model type.
Default value:
"detailed_prediction"Also available on the trained model.
- earlyStopping
Stop early when there is no more relative improvement on train or validation (if provided).
Scala default value:
true; Python default value:TrueAlso available on the trained model.
- exportCheckpointsDir
Automatically export generated models to this directory.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- family
Family. Use binomial for classification with logistic regression, others are for regression problems. Possible values are
"AUTO","gaussian","binomial","fractionalbinomial","quasibinomial","poisson","gamma","multinomial","tweedie","ordinal","negativebinomial".Default value:
"AUTO"Also available on the trained model.
- featuresCols
Name of feature columns
Scala default value:
Array(); Python default value:[]Also available on the trained model.
- foldAssignment
Cross-validation fold assignment scheme, if fold_column is not specified. The ‘Stratified’ option will stratify the folds based on the response variable, for classification problems. Possible values are
"AUTO","Random","Modulo","Stratified".Default value:
"AUTO"Also available on the trained model.
- foldCol
Column with cross-validation fold index assignment per observation.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- gamCols
Predictor column names for gam.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- gradientEpsilon
Converge if objective changes less (using L-infinity norm) than this, ONLY applies to L-BFGS solver. Default indicates: If lambda_search is set to False and lambda is equal to zero, the default value of gradient_epsilon is equal to .000001, otherwise the default value is .0001. If lambda_search is set to True, the conditional values above are 1E-8 and 1E-6 respectively.
Default value:
-1.0Also available on the trained model.
- ignoreConstCols
Ignore constant columns.
Scala default value:
true; Python default value:TrueAlso available on the trained model.
- interactions
A list of predictor column indices to interact. All pairwise combinations will be computed for the list.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- intercept
Include constant term in the model.
Scala default value:
true; Python default value:TrueAlso available on the trained model.
- keepCrossValidationFoldAssignment
Whether to keep the cross-validation fold assignment.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- keepCrossValidationModels
Whether to keep the cross-validation models.
Scala default value:
true; Python default value:TrueAlso available on the trained model.
- keepCrossValidationPredictions
Whether to keep the predictions of the cross-validation models.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- keepGamCols
Save keys of model matrix.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- knotIds
String arrays storing frame keys of knots. One for each gam column specified in gam_columns.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- labelCol
Response variable column.
Default value:
"label"Also available on the trained model.
- lambdaSearch
Use lambda search starting at lambda max, given lambda is then interpreted as lambda min.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- lambdaValue
Regularization strength.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- link
Link function. Possible values are
"family_default","identity","logit","log","inverse","tweedie","multinomial","ologit","oprobit","ologlog".Default value:
"family_default"Also available on the trained model.
- maxActivePredictors
Maximum number of active predictors during computation. Use as a stopping criterion to prevent expensive model building with many predictors. Default indicates: If the IRLSM solver is used, the value of max_active_predictors is set to 5000 otherwise it is set to 100000000.
Default value:
-1Also available on the trained model.
- maxAfterBalanceSize
Maximum relative size of the training data after balancing class counts (can be less than 1.0). Requires balance_classes.
Scala default value:
5.0f; Python default value:5.0Also available on the trained model.
- maxConfusionMatrixSize
[Deprecated] Maximum size (# classes) for confusion matrices to be printed in the Logs.
Default value:
20Also available on the trained model.
- maxIterations
Maximum number of iterations.
Default value:
-1Also available on the trained model.
- maxRuntimeSecs
Maximum allowed runtime in seconds for model training. Use 0 to disable.
Default value:
0.0Also available on the trained model.
- missingValuesHandling
Handling of missing values. Either MeanImputation, Skip or PlugValues. Possible values are
"MeanImputation","PlugValues","Skip".Default value:
"MeanImputation"Also available on the trained model.
- modelId
Destination id for this model; auto-generated if not specified.
Scala default value:
null; Python default value:None- namedMojoOutputColumns
Mojo Output is not stored in the array but in the properly named columns
Scala default value:
true; Python default value:TrueAlso available on the trained model.
- nfolds
Number of folds for K-fold cross-validation (0 to disable or >= 2).
Default value:
0Also available on the trained model.
- nlambdas
Number of lambdas to be used in a search. Default indicates: If alpha is zero, with lambda search set to True, the value of nlamdas is set to 30 (fewer lambdas are needed for ridge regression) otherwise it is set to 100.
Default value:
-1Also available on the trained model.
- nonNegative
Restrict coefficients (not intercept) to be non-negative.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- numKnots
Number of knots for gam predictors.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- objReg
Likelihood divider in objective value computation, default is 1/nobs.
Default value:
-1.0Also available on the trained model.
- objectiveEpsilon
Converge if objective value changes less than this. Default indicates: If lambda_search is set to True the value of objective_epsilon is set to .0001. If the lambda_search is set to False and lambda is equal to zero, the value of objective_epsilon is set to .000001, for any other value of lambda the default value of objective_epsilon is set to .0001.
Default value:
-1.0Also available on the trained model.
- offsetCol
Offset column. This will be added to the combination of columns before applying the link function.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- predictionCol
Prediction column name
Default value:
"prediction"Also available on the trained model.
- prior
Prior probability for y==1. To be used only for logistic regression iff the data has been sampled and the mean of response does not reflect reality.
Default value:
-1.0Also available on the trained model.
- removeCollinearCols
In case of linearly dependent columns, remove some of the dependent columns.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- scale
Smoothing parameter for gam predictors.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- scoreEachIteration
Whether to score during each iteration of model training.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- seed
Seed for pseudo random number generator (if applicable).
Scala default value:
-1L; Python default value:-1- solver
AUTO will set the solver based on given data and the other parameters. IRLSM is fast on on problems with small number of predictors and for lambda-search with L1 penalty, L_BFGS scales better for datasets with many columns. Possible values are
"AUTO","IRLSM","L_BFGS","COORDINATE_DESCENT_NAIVE","COORDINATE_DESCENT","GRADIENT_DESCENT_LH","GRADIENT_DESCENT_SQERR".Default value:
"AUTO"Also available on the trained model.
- splitRatio
Accepts values in range [0, 1.0] which determine how large part of dataset is used for training and for validation. For example, 0.8 -> 80% training 20% validation. This parameter is ignored when validationDataFrame is set.
Default value:
1.0- standardize
Standardize numeric columns to have zero mean and unit variance.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- startval
double array to initialize coefficients for GAM.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- stoppingMetric
Metric to use for early stopping (AUTO: logloss for classification, deviance for regression and anonomaly_score for Isolation Forest). Note that custom and custom_increasing can only be used in GBM and DRF with the Python client. Possible values are
"AUTO","deviance","logloss","MSE","RMSE","MAE","RMSLE","AUC","AUCPR","lift_top_group","misclassification","mean_per_class_error","anomaly_score","custom","custom_increasing".Default value:
"AUTO"Also available on the trained model.
- stoppingRounds
Early stopping based on convergence of stopping_metric. Stop if simple moving average of length k of the stopping_metric does not improve for k:=stopping_rounds scoring events (0 to disable).
Default value:
0Also available on the trained model.
- stoppingTolerance
Relative tolerance for metric-based stopping criterion (stop if relative improvement is not at least this much).
Default value:
0.001Also available on the trained model.
- theta
Theta.
Default value:
0.0Also available on the trained model.
- tweedieLinkPower
Tweedie link power.
Default value:
0.0Also available on the trained model.
- tweedieVariancePower
Tweedie variance power.
Default value:
0.0Also available on the trained model.
- validationDataFrame
A data frame dedicated for a validation of the trained model. If the parameters is not set,a validation frame created via the ‘splitRatio’ parameter.
Scala default value:
null; Python default value:None- weightCol
Column with observation weights. Giving some observation a weight of zero is equivalent to excluding it from the dataset; giving an observation a relative weight of 2 is equivalent to repeating that row twice. Negative weights are not allowed. Note: Weights are per-row observation weights and do not increase the size of the data frame. This is typically the number of times a row is repeated, but non-integer values are supported as well. During training, rows with higher weights matter more, due to the larger loss function pre-factor.
Scala default value:
null; Python default value:NoneAlso available on the trained model.
- withContributions
Enables or disables generating a sub-column of detailedPredictionCol containing Shapley values.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- withLeafNodeAssignments
Enables or disables computation of leaf node assignments.
Scala default value:
false; Python default value:FalseAlso available on the trained model.
- withStageResults
Enables or disables computation of stage results.
Scala default value:
false; Python default value:FalseAlso available on the trained model.