Parameters of H2OGAM

Affected Classes

  • ai.h2o.sparkling.ml.algos.H2OGAM

  • ai.h2o.sparkling.ml.algos.classification.H2OGAMClassifier

  • ai.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: None

Also 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: None

Also 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: False

Also 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-4

Also available on the trained model.

bs

Basis function type for each gam predictors, 0 for cr, 1 for thin plate regression with knots, 2 for monotone splines. If specified, must be the same size as gam_columns.

Scala default value: null ; Python default value: None

Also 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: None

Also 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: False

Also 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: False

Also 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: False

Also 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: False

Also available on the trained model.

customMetricFunc

Reference to custom evaluation function, format: language:keyName=funcName.

Scala default value: null ; Python default value: None

Also available on the trained model.

dataFrameSerializer

A full name of a serializer used for serialization and deserialization of Spark DataFrames to a JSON value within NullableDataFrameParam.

Default value: "ai.h2o.sparkling.utils.JSONDataFrameSerializer"

Also 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: True

Also available on the trained model.

exportCheckpointsDir

Automatically export generated models to this directory.

Scala default value: null ; Python default value: None

Also 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: None

Also available on the trained model.

gamCols

Arrays of predictor column names for gam for smoothers using single or multiple predictors like {{‘c1’},{‘c2’,’c3’},{‘c4’},…}

Scala default value: null ; Python default value: None

Also 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: -1.0

Also available on the trained model.

ignoreConstCols

Ignore constant columns.

Scala default value: true ; Python default value: True

Also 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: None

Also available on the trained model.

intercept

Include constant term in the model.

Scala default value: true ; Python default value: True

Also available on the trained model.

keepBinaryModels

If set to true, all binary models created during execution of the fit method will be kept in DKV of H2O-3 cluster.

Scala default value: false ; Python default value: False

keepCrossValidationFoldAssignment

Whether to keep the cross-validation fold assignment.

Scala default value: false ; Python default value: False

Also available on the trained model.

keepCrossValidationModels

Whether to keep the cross-validation models.

Scala default value: true ; Python default value: True

Also available on the trained model.

keepCrossValidationPredictions

Whether to keep the predictions of the cross-validation models.

Scala default value: false ; Python default value: False

Also available on the trained model.

keepGamCols

Save keys of model matrix.

Scala default value: false ; Python default value: False

Also available on the trained model.

knotIds

Array storing frame keys of knots. One for each gam column set specified in gam_columns.

Scala default value: null ; Python default value: None

Also 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: False

Also available on the trained model.

lambdaValue

Regularization strength.

Scala default value: null ; Python default value: None

Also 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: -1

Also 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: 5.0

Also available on the trained model.

maxConfusionMatrixSize

[Deprecated] Maximum size (# classes) for confusion matrices to be printed in the Logs.

Default value: 20

Also available on the trained model.

maxIterations

Maximum number of iterations.

Default value: -1

Also available on the trained model.

maxRuntimeSecs

Maximum allowed runtime in seconds for model training. Use 0 to disable.

Default value: 0.0

Also 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: True

Also available on the trained model.

nfolds

Number of folds for K-fold cross-validation (0 to disable or >= 2).

Default value: 0

Also 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: -1

Also available on the trained model.

nonNegative

Restrict coefficients (not intercept) to be non-negative.

Scala default value: false ; Python default value: False

Also available on the trained model.

numKnots

Number of knots for gam predictors.

Scala default value: null ; Python default value: None

Also available on the trained model.

objReg

Likelihood divider in objective value computation, default is 1/nobs.

Default value: -1.0

Also 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: -1.0

Also 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: None

Also 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: -1.0

Also 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: False

Also available on the trained model.

scale

Smoothing parameter for gam predictors. If specified, must be of the same length as gam_columns.

Scala default value: null ; Python default value: None

Also available on the trained model.

scaleTpPenaltyMat

Scale penalty matrix for tp (thin plate) smoothers as in R.

Scala default value: false ; Python default value: False

Also available on the trained model.

scoreEachIteration

Whether to score during each iteration of model training.

Scala default value: false ; Python default value: False

Also 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.

splineOrders

Order of I-splines used for gam predictors. If specified, must be the same size as gam_columns.Values for bs=0 or 1 will be ignored.

Scala default value: null ; Python default value: None

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: False

Also available on the trained model.

standardizeTpGamCols

standardize tp (thin plate) predictor columns.

Scala default value: false ; Python default value: False

Also available on the trained model.

startval

double array to initialize coefficients for GAM.

Scala default value: null ; Python default value: None

Also 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: 0

Also 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: 0.001

Also available on the trained model.

theta

Theta.

Default value: 0.0

Also available on the trained model.

tweedieLinkPower

Tweedie link power.

Default value: 0.0

Also available on the trained model.

tweedieVariancePower

Tweedie variance power.

Default value: 0.0

Also 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. The parameter is not serializable!

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. If you set weight = 0 for a row, the returned prediction frame at that row is zero and this is incorrect. To get an accurate prediction, remove all rows with weight == 0.

Scala default value: null ; Python default value: None

Also available on the trained model.

withContributions

Enables or disables generating a sub-column of detailedPredictionCol containing Shapley values of original features.

Scala default value: false ; Python default value: False

Also available on the trained model.

withLeafNodeAssignments

Enables or disables computation of leaf node assignments.

Scala default value: false ; Python default value: False

Also available on the trained model.

withStageResults

Enables or disables computation of stage results.

Scala default value: false ; Python default value: False

Also available on the trained model.