Noisy Target vs Target Distribution,Deterministic Target vs Deterministic Target Func
Hello, I am confused by the meaning of these four words:
Noisy Target vs Target Distribution I understand that a target distribution is a probability distribution, but how about noisy target? What is a noisy target? A value or a function or a probability distribution? Deterministic Target vs Deterministic Target Function Same above, I understand that a deterministic target function is a function, but how about deterministic target? A value or a function? And... Quote:
I am very confused... :( Thank you very much for your time spending on here. 
Re: Noisy Target vs Target Distribution,Deterministic Target vs Deterministic Target
Apologies for the confusion.
Noisy target and deterministic target refer to a specific target value (for example at a specific point x). So you have a data point (x,y). If y=f(x), we say that y is a deterministic target and f is a deterministic target function. If for the same value of x you may observe different values of y (the example in the book: several people may have the same income but some may default on credit debt and some may not), then we say that y is a noisy target  its value is not deterministically determined given x. The way we model this situation is using a target distribution P[yx]. So P[yx] is the distribution of the (noisy) target, and we call it the target distribution. Hope this helps. Quote:

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