Title: Information Theory Johoriron
Description: Information distance;

Shannon's distance:

        d(X,Y)＝H(X|Y)+H(Y|X),

Rajski's distannce:

        ρ(X,Y)＝{H(X|Y)+H(Y|X)}/H(XY).
Subjects: Economic aspects, Telecommunication, Computers and civilization, Information networks