In terms of actual implementation I have this in mind:

http://www.phenix-online.org/newsletter/CCN_2011_01.pdf

"Maximum likelihood refinement of twinned structures", page 29.

Of course that would not stop (me) from implementing better ideas should they arrive. However the paper mentioned above pictures a clear image of the problem that we are going to address.

Pavel

On 7/29/14, 12:30 PM, Chris Fage wrote:

Thank you, Randy, Nat, and Peter. I'll keep an eye out for that pub.

Best,
Chris

On Tue, Jul 29, 2014 at 7:59 AM, Randy Read <rjr27@cam.ac.uk> wrote:

Yes, we were hoping to make some generalisations and improvements before publishing this.  (Which we obviously haven’t gotten around to doing yet!)

Randy

-----
Randy J. Read
Department of Haematology, University of Cambridge
Cambridge Institute for Medical Research    Tel: +44 1223 336500
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On 29 Jul 2014, at 13:44, Nathaniel Echols <nechols@lbl.gov> wrote:

> On Mon, Jul 28, 2014 at 12:41 PM, Chris Fage <cdfage@gmail.com> wrote:
> Can anyone please direct me to a literature reference describing the maximum likelihood method for detection of twinning based on twin laws, as implemented in phenix.xtriage?
>
> If you mean the twin fraction estimation, the code doesn't have anything more helpful than this:
>
> Zwart, Read, Grosse-Kunstleve & Adams, to be published
>
> -Nat

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