search for: somer

Hello R Community, I'm continuing to work through logistic regression (thanks for all the help on score test) and have come up against a new opposition. I'm trying to compute Somers Dyx as some suggest this is the preferred method to Somers Dxy (Demaris, 1992). I have searchered the [R] archieves to no avail for a function or code to compute Dyx (not Dxy). The overview of Hmisc has mention of Dyx for the rcorr.cens function but this appears to be a misprint because the manu...

...ow to transform my data into CoCo-format in order to access these functions, regardless of whether the CoCo versions are actually intended for calculating the actual statistic or for some other package internal purposes, as may sometimes be the case. Furthermore, it appears to me that the 'somers2' function in the Hmisc package applies Somers' D only to 2x2 and not larger tables. Am I mistaken, or does there exist somewhere else an implementation of the Somers' D statistic for the more general RxC tables? This was queried in 1999, but no response seemed then to be forthcomi...

Dear R help, I am having a problem with the Design package and my problem is detailed here. I fit a cox model to my data and validate the Somer's Dxy using the Design package. (Because of computation time problem, i only try 10 bootstrap samples for the time being) This is the model without stratification: > library(Design) > cox1a<-cph(surv.obj~factor(ecog)+factor(grade)+factor(tumor)+factor(extra),x=T,y=T) > coef1a<-c...

...or the variables in both cases. What I would now like to do is to prove that there is no statistically significant difference between the statistics (between the dev and val datasets.) Any help would be much appreciated. > rdev <- rcorrcens(Surv(stimes1,eind1)~gendat1+neurodat1) > rdev Somers' Rank Correlation for Censored Data Response variable:Surv(stimes1, eind1) C Dxy aDxy SD Z P n gendat1 0.534 0.069 0.069 0.017 3.98 0.0001 1500 neurodat1 0.482 -0.036 0.036 0.011 3.18 0.0015 1500 > rval <- rcorrcens(Surv(stimes2,eind2)~gendat2+neur...

Dear R help My problem is very similar to the analysis detailed here. If we use the mayo dataset provided with the survivalROC package the estimate for Somer's Dxy is very negative -0.56. The Nagelkerke R2 is positive though 0.32. I know there is a difference between explained variation and predictive ability but I am surprised there is usch a difference given that even a non predictive model should have Dxy around 0. Am I doing something wrong or i...

Does anyone know about functions for calculating Somer's D in R? Perhaps even a version for censored values, like the two functions in hmisc? Thanks for any pointers -- Dr. Jens Oehlschl?gel-Akiyoshi MD FACTORY GmbH Bayerstrasse 21 80335 M?nchen Tel.: 089 545 28-27 Fax.: 089 545 28-10 http://www.mdfactory.de -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-....

On Mon, Oct 19, 2020 at 10:58 AM alan somers <asomers@gmail.com> wrote: > On Wed, Oct 14, 2020 at 3:41 AM Daniel P. Berrangé <berrange@redhat.com> > wrote: > >> On Wed, Oct 14, 2020 at 10:37:26AM +0100, Richard W.M. Jones wrote: >> > On Tue, Oct 13, 2020 at 03:21:35PM -0600, alan somers wrote: >> &g...

...and rejoin the domain a different computer name. However, this is a HUGE pain. The number of reboots alone is a genuine time-killer. Doing it one several systems can waste an entire day. Does anyone have any suggestions? Thanks! Jason -- ================================================= Jason Somers Network Administrator Red Barn Technology Group, Inc. 1235 Front Street - Suite 3 Binghamton, NY 13905 (607) 772-1888 x222

On Wed, Jun 17, 2020 at 5:23 AM Richard W.M. Jones <rjones@redhat.com> wrote: > I pushed 2 & 3, thanks. > > But ... > > > From 9fa3e443467e3c06761ec54241327e8daf8701ca Mon Sep 17 00:00:00 2001 > > From: Alan Somers <asomers@gmail.com> > > Date: Mon, 15 Jun 2020 16:59:53 -0600 > > Subject: [PATCH 1/3] Add a Cargo.toml file to the top-level directory > > > > This is necessary for other Rust projects to depend on unrelesed > > versions of the nbdkit crate. > > --- >...

On Mon, Jun 15, 2020 at 02:22:32PM +0100, Richard W.M. Jones wrote: > On Thu, Jun 11, 2020 at 04:19:08PM -0600, alan somers wrote: > > The existing Rust bindings for nbdkit aren't very idiomatic Rust, and they > > are missing a lot of features. So I've rewritten them. The new bindings > > aren't backwards compatible, but I doubt that's a problem. Most likely, > > nobody has tr...

From: Alan Somers <asomers@gmail.com> There was a missing #include. It only worked on Linux due to header pollution. --- plugins/ssh/ssh.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/plugins/ssh/ssh.c b/plugins/ssh/ssh.c index ea199a93..a4007c40 100644 --- a/plugins/ssh/ssh.c +++ b/plugins/ssh/ss...

On Mon, Jun 15, 2020 at 08:11:47AM -0600, alan somers wrote: > On Mon, Jun 15, 2020 at 8:04 AM Daniel P. Berrangé <berrange@redhat.com> > wrote: > > > On Mon, Jun 15, 2020 at 02:22:32PM +0100, Richard W.M. Jones wrote: > > > On Thu, Jun 11, 2020 at 04:19:08PM -0600, alan somers wrote: > > > > The existing Ru...

On Wed, Oct 14, 2020 at 10:37:26AM +0100, Richard W.M. Jones wrote: > On Tue, Oct 13, 2020 at 03:21:35PM -0600, alan somers wrote: > > Would libguestfs be willing to enable CI for the nbdkit project?  It's very > > easy to set up, at least for the Rust portion.  I'm comfortable with both > > Cirrus CI and Github's native CI.  I can get it started if you agree to do it. > > Sure. &gt...

> 1. Blatant screen scraping is a violation of the terms of service for RHN .. > so where is a SOURCE of information for something like this: > > https://rhn.redhat.com/errata/RHSA-2014-2024.html > > If you read this: > https://access.redhat.com/help/terms/ > > then, one can not just grab all the info on that errata page and distribute it .. > which is why we LINK

On 6/17/20 6:23 AM, Richard W.M. Jones wrote: > I pushed 2 & 3, thanks. > > But ... > >> From 9fa3e443467e3c06761ec54241327e8daf8701ca Mon Sep 17 00:00:00 2001 >> From: Alan Somers <asomers@gmail.com> >> Date: Mon, 15 Jun 2020 16:59:53 -0600 >> Subject: [PATCH 1/3] Add a Cargo.toml file to the top-level directory >> >> This is necessary for other Rust projects to depend on unrelesed unreleased >> versions of the nbdkit crate. As a meta-...

I am interested Andrea is whether you ever established why your R2 was 1. I have had a similar situation previously. My main issue though, which I'd be v grateful for advice on, is why I am obtaining such negative values -0.3 for Somers Dxy using validate.cph from the Design package given my value of Nagelkerke R2 is not so low 13.2%. I have this output when fitting 6 variables all with p-values<0.01 I am wondering what the interpretation should be. I know my Nagelkerke R2 isn't very good but I compare my results with th...

I am running Centos 5 64 bit. For somer reason i cannot get the windows client to connect to the server. The port is set to 904 as per the install but when i try to connect to the server i get the error the machine is actively refusing it. I do not have a firewall on and the apache server and everything else is running. I can chec...

On 01/06/2015 04:25 AM, Liam O'Toole wrote: > On 2015-01-06, Somers-Harris, David | David | OPS > <david.somers-harris at mail.rakuten.com> wrote: >>> 1. Blatant screen scraping is a violation of the terms of service >>> for RHN .. so where is a SOURCE of information for something like >>> this: >>> >>> https...

...terpretation of its direction and form of the 'predictor'. One of the arguments is a "numeric predictor variable" ( presumably this is just a *single* predictor variable). Say this variable takes numeric values.... Am I correct in thinking that if the c index is > 0.5 (with Somers D positive) then this tells us that the higher the numeric values of the 'predictor', the greater the survival probability and similarly if the c index is <0.5 (with Somers D negative) then this tells us that the higher the numeric values of the 'predictor' the lower the sur...