module Prolly::RandVar::Infogain
Public Instance Methods
infogain()
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I(Y | X) I(Y | X, A = a) I(Y | X, A = a, B = b)
# File lib/prolly/rand_var/infogain.rb, line 9 def infogain raise "Need given var" if @uspec_gv.empty? and @spec_gv.empty? raise "Need unspecified given var" if @uspec_gv.empty? raise "Need unspecified rand var" if @uspec_rv.empty? # puts "I(#{@rv} | #{@gv})" Ps.rv(*@uspec_rv).given(@spec_gv).entropy - Ps.rv(*@uspec_rv).given(*@uspec_gv, @spec_gv).entropy end