Displaying 4 results from an estimated 4 matches for "garthwaite".
2007 Jul 24
1
function optimization: reducing the computing time
Dear useRs,
I have written a function that implements a Bayesian method to
compare a patient's score on two tasks with that of a small control
group, as described in Crawford, J. and Garthwaite, P. (2007).
Comparison of a single case to a control or normative sample in
neuropsychology: Development of a bayesian approach. Cognitive
Neuropsychology, 24(4):343?372.
The function (see below) return the expected results, but the time
needed to compute is quite long (at least for a test...
2006 Mar 30
1
warning message in hand-made function
...dl <- n-1 #degrees of freedom of the test
#t.test computation
t.obs <- (patient-mean.c) / (sd.c*(((n+1)/n)^0.5))
proba.onetailed <- 1-pt(abs(t.obs), df=dl)
rar <- pt(t.obs, df=dl) #point estimate of the rarity
#confidence intervals computation on the rarity (Crawford &
Garthwaite, 2002, Neuropsychologia)
c <- (patient-mean.c)/sd.c
#finding the non central parameter of t distributions
f <- function(delta, pr, x, df) pt(x, df = df, ncp = delta) - pr
deltaL <- uniroot(f, lower=-37.62, upper=37.62, pr = 0.025, x = c*
(n^0.5), df = dl)
deltaU <- uniroot(f, lowe...
2008 Feb 27
1
Q. virsh shutdown for a Solaris HVM guest domain
Hi,
I''ve installed Solaris 10 u4 as a hardware virtual machine guest
domain on SXDE 1/08 (aka Nevada b79b) which was fine, i.e. after the
virt-install the domain was fine. However when I went to shutdown the
domain I issued "virsh shutdown solarisHVM" which appeared to
immediately terminate the guest domain. Note, I also have a
paravirtualized domain
2007 Sep 26
0
Open High Availability Cluster with xVM
Hi Everyone,
Just a quick fyi, as within the HA Clusters community we have recently endorsed a project to develop an Open High Availability Cluster (OHAC) failover agent for xVM guest domains.
The HA Clusters community is located at http://opensolaris.org/os/community/ha-clusters/
The project, Cluster Agent: OpenSolaris xVM, is located at http://opensolaris.org/os/project/ha-xvm/
As we