Scaling methods

All scaling methods are based on the determination of a common scaling factor which is subsequently used to rescale the whole dataset, such that a global rescaling is achieved.

Let x¡ (i =1,...,n) denote the logarithm of background-subtracted raw intensities of array spots. When applying any scaling method, one subtracts the determined common factor from the measured data xi for all i =1,...,n. Scaling methods fix a range of intensities such that experiments are comparable over a common range. This is true for the following scaling methods:

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