Sent: 17 February 2020 16:36
To: Nave, Colin (DLSLtd,RAL,LSCI)
Cc: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] FW: [ccp4bb] [3dem] Which resolution?
Hi Colin,
Neutrons are applied to the uranyl hydrides so as to make their scattering
lengths much more equal than with X-rays, and so side step
Dear all,
I have received a request to clarify what I mean by threshold in my
contribution of 17 Feb below and then post the clarification on CCP4BB. Being
a loyal (but very sporadic) CCP4BBer I am now doing this. My musings in this
thread are as much auto-didactic as didactic. In other words I
2019 CCP4 study weekend paper
Regards
Colin
From: Randy Read
Sent: 20 February 2020 11:45
To: Nave, Colin (DLSLtd,RAL,LSCI)
Cc: CCP4BB@jiscmail.ac.uk
Subject: Re: [ccp4bb] [3dem] Which resolution?
Dear Colin,
Over the last few years we've been implementing measures of information ga
Alexis
This is a very useful summary.
You say you were not convinced by Marin's derivation in 2005. Are you convinced
now and, if not, why?
My interest in this is that the FSC with half bit thresholds have the danger of
being adopted elsewhere because they are becoming standard for protein
str
To: CCP4BB@JISCMAIL.AC.UK
Cc: Nave, Colin (DLSLtd,RAL,LSCI)
Subject: Re: [ccp4bb] [3dem] Which resolution?
In my opinion the threshold should be zero bits. Yes, this is where CC1/2 = 0
(or FSC = 0). If there is correlation then there is information, and why throw
out information if there is
ome conditions, my proposed
thresholds behave similarly to Marin's 1/2-bit-based curve, which convinces me
further that Marin really is onto something.
To re-iterate: the choice of target SNR (or information content) is independent
of the choice of SNR estimator and of statistical testing fram
The subject line for Isabel's email is very good.
I do have a question (more a request) for the more computer scientist oriented
people. I think it is relevant for where this technology will be going. It
comes from trying to understand whether problems addressed by Alpha are NP, NP
hard, NP com
e to the prediction. The networks
used here are humongous and a detailed look at the weights (if at all feasible)
may point us in the right direction.
From: CCP4 bulletin board mailto:CCP4BB@JISCMAIL.AC.UK>>
On Behalf Of Nave, Colin (DLSLtd,RAL,LSCI)
Sent: December 4, 2020 9
Hi Joseph
Great diffraction patterns. As Jon has just said, it could be zinc acetate.
There are some very strong spots which would be consistent with a single
crystal of this. However, something else seems to be present.
Could it instead be PEG crystals with some superlattice repeat? For unit cel
Dear Gerard, Marina and others.
I agree that using a multi-axis goniostat is one way of separating the spots.
Also that the separation of spots provided by the spatial resolution of the
detector is often much better than the separation you could get from even very
fine-sliced images. However, i
Bernhard
What qualifies? Good question.
There are plenty of books on AI/machine learning but, as always, it is more
efficient/lazier to read reviews than the books themselves. I think the London
Review of Books allows limited access to its articles so most should be able to
read this
https://ww
Hi James
For the case under consideration, isn't the gamma distribution the maximum
entropy prior i.e. a default with minimum information content.
Colin
-Original Message-
From: CCP4 bulletin board On Behalf Of James Holton
Sent: 17 October 2021 18:25
To: CCP4BB@JISCMAIL.AC.UK
Subject:
Congratulations to James for starting this interesting discussion.
For those who are like me, nowhere near a black belt in statistics, the thread
has included a number of distributions. I have had to look up where these
apply and investigate their properties.
As an example,
“The Poisson distrib
There is another quote from an equally revered physicist – James Clark Maxwell
“The actual science of logic is conversant at present only with things either
certain, impossible, or entirely doubtful, none of which (fortunately) we have
to reason on. Therefore the true logic for this world is the
All these quotes are great fun and worth keeping in mind, along with many
others. I hadn’t realised that the creationists had adopted James Clark Maxwell
as one of their own. However he didn’t go as far as one present day scientist
who believes the earth is no more than 10,000 years old. Which d
, and
(probably most of all) wishful thinking.
https://www.charlespetzold.com/etc/MaxwellMoleculesAndEvolution.html
Cheers
-- Ian
On Sun, 6 Nov 2022 at 20:13, Nave, Colin (DLSLtd,RAL,LSCI)
<64fdcfc6624b-dmarc-requ...@jiscmail.ac.uk<mailto:64fdcfc6624b-dmarc-requ...@jiscmail.ac.uk>
://utw10426.utweb.utexas.edu/Topics/Models/Text.html
though of course there are many other sources
Still all good fun to discuss.
Colin
From: Carter, Charlie
Sent: 06 November 2022 21:19
To: Nave, Colin (DLSLtd,RAL,LSCI)
Cc: CCP4BB@jiscmail.ac.uk
Subject: Re: [ccp4bb] Another folding AI
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