Joint Entropy

Estimate the joint entropy of selected variables.

Usage

je(data, indices, base = exp(1), type = c("cont", "disc"), k = 3)

Arguments

data

Observation data.

indices

Integer vector of column indices to include in joint entropy calculation.

base

(optional) Logarithm base of the entropy. Defaults to exp(1) (nats). Use 2 for bits or 10 for dits.

type

(optional) Estimation method: "disc" for discrete entropy or "cont" for continuous entropy (KSG estimator).

k

(optional) Number of nearest neighbors used by the continuous estimator. Ignored when type = "disc".

Value

A numerical value.

Examples

infoxtr::je(matrix(1:100,ncol=2),1:2)
#> [1] 5.784231