In this very commonly used measure

In this very commonly used measure of fidelity the distance function (x;y) is (apart from a constant factor) the square of the ordinary Euclidean distance between the points x and y in the associated function space.

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U ovom vrlo često koristi mjera vjernosti udaljenost funkcija (x, y)? Je (osim konstantnog faktora) kvadratu običnog euklidske udaljenosti između točaka X i Y u pridruženom funkcije prostora.