[phenixbb] Maximum-likelihood score calculation

[Pavel Afonine]

ML used in phenix.refine does not contain a constant term (to save 
computation time; perhaps there is no huge gain!) and is normalized by 
the number of reflections so the value is between 0 and ~10 most of the 
time (that makes it predictable and so it can be calibrated to use for 
various purposes).

Pavel

On 7/11/14, 5:07 PM, Nathaniel Echols wrote:
> On Fri, Jul 11, 2014 at 4:57 PM, Pavel Afonine <pafonine at lbl.gov 
> <mailto:pafonine at lbl.gov>> wrote:
>
>     1) ML targets used in phenix.refine and Phaser are essentially the
>     same but parametrized differently (alpha/beta vs sigmaA).
>
>
> ... but they are not reported the same way - phenix.refine shows a raw 
> target value (normalized?), while Phaser outputs TFZ and LLG. 
>  Presumably these are related somehow but it is not obvious to me.
>
> -Nat

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://phenix-online.org/pipermail/phenixbb/attachments/20140711/c3bec0d7/attachment.htm>