Modern Spectrum Analysis in NMR

S i
(f 1
,f 2
,f 3
) = s i
(f 1
) ⊗ s i
(f 2
) ⊗ s i
(f 3
)
Also known as PARAFAC; PCA is a 2D equivalent
€
Billeter, Orekhov et al.
(Denk & Wagner;
Rinaldi et al.)
Less restrictive than the exponential decay assumption
Random noise does not have a decomposition
Unique decomposition restricted to 3+ dimensions