daltoolbox (version 1.3.767)

smoothing_freq: Smoothing by equal frequency

Description

Discretize a numeric vector into n bins with approximately equal frequency (quantile cuts), and replace each value by the mean of its bin.

Usage

smoothing_freq(n)

Value

returns an object of class smoothing_freq

Arguments

n

number of bins

References

Han, J., Kamber, M., Pei, J. (2011). Data Mining: Concepts and Techniques. (Discretization)

Examples

data(iris)
obj <- smoothing_freq(n = 2)
obj <- fit(obj, iris$Sepal.Length)
sl.bi <- transform(obj, iris$Sepal.Length)
table(sl.bi)
obj$interval

bins <- cut(iris$Sepal.Length, unique(obj$interval.adj), FALSE, include.lowest = TRUE)
entro <- evaluate(obj, bins, iris$Species)
entro$entropy