Normalization by Log Ratio 

Assume that there are n rows with seven variables, A, B, C, D, E, F and G, in the data. We use variable E as an example in the calculations below. All target variables are normalized in the same way.

If we select A as baseline variable the normalized value of e_i for variable E in the i^th row is calculated as:

where

a_i = the value for variable A in the ith row.

See also:

Normalizing Columns