Creating a function with a logical output.

Hi all,

I am quite confused. I have a function say like this:

function [output] = TLU( inputs, weights, threshold )

activationMagnitude = sum(weights.*inputs)

if activationMagnitude > threshold

output = true;

else

output = false;

end

But when I use class(ans) it always shows a char data type - despite me specifying the output as either true or false!

Why is this?

Best regards,

Craig

[Azzi Abdelmalek]

What ans represent?

Answer 1

[Thorsten]

There's nothing wrong with your function, you can just do it more concisely

function output = TLU( inputs, weights, threshold )

output = sum(weights.*inputs)  > threshold;

Then

y = TLU([1 2 3], [ 4 5 6 ], 100)

yields

 y =

      0

And

class(y)

yields

ans =

    logical

But of course then class(ans) gives char (because ans is the string 'logical'), but this has nothing to do with the class returned by your function.

Answer 2

[José-Luis]

It does return logical for me.

What does

 class(TLU(rand, rand, rand))

return? If ans returns something different, you may have overwritten its value before you call to class()

[Azzi Abdelmalek]

The question is what ans represent?