[phenixbb] Are sigma cutoffs for R-free reflections cheating?

Ed Pozharski epozh001 at umaryland.edu
Fri Dec 4 21:57:33 PST 2009

> Reference, please -:) "Rather obvious" doesn't count for me -:)

You are essentially asking for proof that all the experimental data must
be included while fitting theoretical model to it.  Among the "weak
reflections", roughly half will have negative intensities.  If you plan
to exclude that half, the burden of proof is on you.

Excluding weak reflections will likely improve R-factors.  That, of
course, does not mean improved model.



Ed Pozharski <epozh001 at umaryland.edu>
University of Maryland - Baltimore

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