define a formula

[fefer92]

(03-10-2014 12:10 AM)Stefan Wrote:  lol, expectancy, entropy... looks like your studying for the same exam than I do :-D
Here you can again use the dotproduct and make use of the fact that you can apply most of the functions to lists and vectors.
log_2(p) applies log_2 to the vector p (the log_n(x) template is in the math templates).
And then just multiply p and log_2(p), just as before: H(x)=p*log_2(p)

P.S: You can type equations in this forum in Latex syntax if you surround them with two $ in the front and back:
$$\frac{1}{x}$$

I'm learning in a subject that is called principle of communication II (Hehehe).The dot tip is a good idea,I didn't understood the H(x),you have to make a sum and the PS too,can you try to explain in another way?

Thanks