measure information loss by information entropy

Usage

F_informationloss(xvar, xdisc)

Arguments

xvar

The original undiscretized vector.

xdisc

The discretized vector.

Value

A numeric value of information loss measured by information entropy.

Details

The information loss measured by information entropy formula is $F=-\sum _{i=1}^N{p}_{(i)}{\log }_2{p}_{(i)}-(-\sum _{h=1}^L{p}_{(h)}{\log }_2{p}_{(h)})$

Author

Wenbo Lv lyu.geosocial@gmail.com

Examples

F_informationloss(1:7,c('x',rep('y',3),rep('z',3)))
#> [1] 1.358539