I make a new ECG time series from WV spectrum of original signal and its L2 energy normalisation. I am thinking if the reconstruction step benefits from covariance at each time point. I take later a norm of the matrix, which creates the new time series.
- result there is no benefit of adding cov postop into the L2 new signal - verified, strong evidence
- now, testing if the application of cov on the initial energy spectrum helps
I think the coefficient of variation should not be applied to the initial spectrum because there exists a bijection between the two data sets, although a nonlinear one.
The problem here is that neither sensor is better in this case, because the data sets are direct conversions of each other, but the CV of each data set is different: 0.79 versus 0.42.
Hovever, I am not sure if the nonlineary of the problem case makes the thing different.