FSinR (version 2.0.8)

mutualInformation: The mutual information measure

Description

Generates an evaluation function that calculates the mutual information value, using the information theory QianShu2015FSinR (set measure). This function is called internally within the filterEvaluator function.

Usage

mutualInformation()

Value

Returns a function that is used to generate an evaluation set measure using the mutual information value for the selected features.

Author

Adan M. Rodriguez

References

Examples

# \donttest{ 

## The direct application of this function is an advanced use that consists of using this 
# function directly to evaluate a set of features
## Classification problem
data("Titanic")
titanic <- as.data.frame(Titanic)

# A discrete dataset is used (in this case we use only several discrete columns)
titanic_subset <- titanic[, c("Class", "Sex", "Age", "Survived")]

# Generate the evaluation function with Mutual Information
mi_evaluator <- mutualInformation()
# Evaluate the features (parameters: dataset, target variable and features)
mi_evaluator(titanic_subset, "Survived", c("Class", "Sex", "Age"))
# }