Changes

== what kinds of problems exist with these indicators? ==

== what kinds of problems exist with these indicators? ==

- (R_sym / R_merge ) should not be used to judge [[data quality]], R_meas should be used instead. The reason is that the former depend on multiplicity, whereas the latter doesn't.

* (R_sym / R_merge ) should not be used to judge [[data quality]], R_meas should be used instead. The reason is that the former depend on multiplicity, whereas the latter doesn't.

- R/R_free and NCS: reflections in work and test set are not independent if chosen randomly. It is better to choose the test set reflections in thin resolution shells (FIXME: references and programs for this).

* R/R_free and NCS: reflections in work and test set are not independent if chosen randomly. It is better to choose the test set reflections in thin resolution shells (FIXME: references and programs for this).

 

* Sets of reflections used for calculating R_free should be maintained throughout a project. This is nicely discussed at http://www.bmsc.washington.edu/people/merritt/xplor/rfree_example.html .

==Notes==

==Notes==

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