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R-factors: Difference between revisions
→Model quality
(Enclosed the equations in dashed boxes to make things clearer - let me know if this doesn't work well!) |
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=== Model quality === | === Model quality === | ||
==== Relation between R and R<sub>free</sub> as a function of resolution ==== | |||
References: | |||
* Tickle IJ, Laskowski RA and Moss DS. Rfree and the Rfree Ratio. I. Derivation of Expected Values of Cross-Validation Residuals Used in Macromolecular Least-Squares Refinement. Acta Cryst. (1998). D54, 547-557 [http://dx.doi.org/10.1107/S0907444997013875] | |||
* Tickle IJ, Laskowski RA and Moss DS. Rfree and the Rfree ratio. II. Calculation of the expected values and variances of cross-validation statistics in macromolecular least-squares refinement. Acta Cryst. (2000). D56, 442-450 [http://dx.doi.org/10.1107/S0907444999016868] | |||
* GJ Kleywegt and TA Jones (2002). Homo Crystallographicus - Quo vadis? Structure 10, 465-472. (reprint from http://xray.bmc.uu.se/cgi-bin/gerard/reprint_mailer.pl?pref=65) | |||
- plot: http://xray.bmc.uu.se/gerard/supmat/rfree2000/rfminusr_vs_resolution.gif | |||
- many more plots: http://xray.bmc.uu.se/gerard/supmat/rfree2000 | |||
- harry plotter (java): http://xray.bmc.uu.se/gerard/supmat/rfree2000/plotter.html | |||
== what kinds of problems exist with these indicators? == | == what kinds of problems exist with these indicators? == | ||