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The Spitz estimate
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Discussion
Stability of the Hessian with the Spitz estimate
Nemeth (1996)
shows that the Hessians in equations (
) can be unstable if the signal and noise operators
and
predict similar components of the data space. In this section I show that the Spitz estimate of the signal PEF makes this overlap impossible.
The Spitz estimate
A 1D example
Stanford Exploration Project
6/7/2002
![[*]](http://sepwww.stanford.edu/latex2html/cross_ref_motif.gif)
)
can be unstable if the signal and noise operators 
and 
predict similar components of the data space.
In this section I show that the Spitz estimate of the signal
PEF makes this overlap impossible.