Subkey |
Description |
---|---|
Variance |
Percentage of times features which have a variance < 0.01 are excluded. Based on ` sklearn”s VarianceThreshold <https://scikit-learn.org/stable/modules/generated/sklearn.feature_selection.VarianceThreshold.html/>`_. |
GroupwiseSearch |
Randomly select which feature groups to use. Parameters determined by the SelectFeatGroup config part, see below. |
SelectFromModel |
Percentage of times features are selected by first training a machine learning model which can rank the features with an ``importance. See also sklearn”s SelectFromModel. |
SelectFromModel_estimator |
Machine learning model / estimator used: can be LASSO, LogisticRegression, or a Random Forest |
SelectFromModel_lasso_alpha |
When using LASSO, search space of weigth of L1 term, see also sklearn <https://scikit-learn.org/stable/modules/generated/sklearn.linear_model.Lasso.html/>. |
SelectFromModel_n_trees |
When using a random forest, search space of number of trees used. |
UsePCA |
Percentage of times Principle Component Analysis (PCA) is used to select features. |
PCAType |
Method to select number of components using PCA: Either the number of components that explains 95% of the variance, or use a fixed number of components.95variance |
StatisticalTestUse |
Percentage of times a statistical test is used to select features. |
StatisticalTestMetric |
Define the type of statistical test to be used. |
StatisticalTestThreshold |
Specify a threshold for the p-value threshold used in the statistical test to select features. The first element defines the lower boundary, the other the upper boundary. Random sampling will occur between the boundaries. |
ReliefUse |
Percentage of times Relief is used to select features. |
ReliefNN |
Min and max of number of nearest neighbors search range in Relief. |
ReliefSampleSize |
Min and max of sample size search range in Relief. |
ReliefDistanceP |
Min and max of positive distance search range in Relief. |
ReliefNumFeatures |
Min and max of number of features that is selected search range in Relief. |