Thank you, Olivier.

Let the observable function value be o(x). It can be defined as:

o(x) = 1, with probability f(x);
o(x) = 0, with probability (1 - f(x)).

where f(x) = 1 / (1 + e(-r(x))) has been defined in the paper. Also, we can
see that the expected value is f(x).
Did I get this correct?

Best regards,
Chin-Chang Yang, 2013/03/06
2013/3/6 Olivier Teytaud <[email protected]>

> It's a Bernoulli noise.
> define  f (x) = 1/ (1 + e(−r(x)) )
> and the objective function at x is 1 with probability f(x).
> So the expected value at x is f(x), but the values you get are noisy.
>
> Best regards,
> Olivier
>
>
>> Since the functions are not noise-free, they should be defined in terms
>>> of some noise. I really need the definition of the noise for comparison
>>> between CLOP and other optimizers.
>>>
>>> I have downloaded the source codes, but I cannot find the codes related
>>> to the noise currently.
>>>
>>>
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-- 
Chin-Chang Yang
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