LFD Book Forum Ch 1: Question on f and h functions
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#1
07-11-2015, 12:20 PM
 digitalgirl Junior Member Join Date: Jul 2015 Posts: 2
Ch 1: Question on f and h functions

Okay I understand that the h function is what we're after. There can be many h functions from the hypothesis space H and we're after the h function that models the data optimally. The f function has been repeatedly stated as unknown. What I don't understand is page 21, the equation. How can the "fraction D where f and h disagree" be an accurate statement when f is considered unknown. Can't test if they disagree when f is unknown to begin with. I hope someone can clarify this for me.
#2
07-11-2015, 08:14 PM
 digitalgirl Junior Member Join Date: Jul 2015 Posts: 2
Re: Ch 1: Question on f and h functions

Okay I got it. The f function is what's being learned which gets continually compared to the hypothesis. Going back to Mitchel's book on Machine Learning. The f function would be the target concept function.

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