https://www.jiscmail.ac.uk/cgi-bin/wa-jisc.exe?RSS&L=BUGS&v=1.0BUGS List
https://www.jiscmail.ac.uk/cgi-bin/wa-jisc.exe?A0=BUGS
BUGS List Archives2024-01-17T13:06:59ZPowered by L-Soft's LISTSERV mailing list manager
http://www.lsoft.com/products/listserv-powered.asp
http://www.lsoft.com/images/listserv_small.gifRe: Initial values
https://www.jiscmail.ac.uk/cgi-bin/wa-jisc.exe?A2=BUGS;af9ab533.2401
No, BUGS needs the actual values (either ecause you give them, or<br>because you tell it to generate them). I'm afraid it's not enough to<br>just specify their prior (which is what you have done).<br><br>Bob<br><br>On 17/01/2024 13:55, José María Grisolía Santos wrote:<br>> Thanks a lot Bob.<br>> However, I told OpenBUGS that<br>> brwqs[i]~dnorm(mrwqs,srwqs) And then provide mean and SD. Isn't it<br>> enough for initial values?<br>><br>> Thank you<br>><br>><br>> Enviado desde Outlook para iOS <https://aka.ms/o0ukef><br>> ------------------------------------------------------------------------<br>> *De:* Bob O'Hara <bob.ohara@ntnu.no><br>> *Enviado:* Wednesday, January 17, 2024 12:36:49 PM<br>> *Para:* José [...]
2024-01-17T14:01:34+01:00Bob O'Harahttps://www.jiscmail.ac.uk/cgi-bin/wa-jisc.exe?A2=BUGS;af9ab533.2401Re: Initial values
https://www.jiscmail.ac.uk/cgi-bin/wa-jisc.exe?A2=BUGS;3d42e0dc.2401
You don't initialise brwqs, which I'm guessing isn't in your data. You<br>might want to use a larger value of srwqs as an initial value, because<br>BUGS will draw inits for brwqs from a normal with the initial values<br>given by the inits for the hyper parameters, so unless the variance of<br>rwq is small, you will generate values a long way from the posterior,<br>and this might make convergence difficult. [...]
2024-01-17T13:36:49+01:00Bob O'Harahttps://www.jiscmail.ac.uk/cgi-bin/wa-jisc.exe?A2=BUGS;3d42e0dc.2401Initial values
https://www.jiscmail.ac.uk/cgi-bin/wa-jisc.exe?A2=BUGS;67b48869.2401
Dear all<br>This is a mixed logit model prepared for individual parameter estimation in one of the parameters (brwqs[i]). The model compiles, though when I launch the initial parameters<br><br>list(bcte= 0.57639, mrwqs=0.0516, srwqs=0.001, bpin=-0.5,<br> bbbs=0.04, bbill=-0.334)<br><br>is telling me "initial values loaded but chain contains uninitialized variables"<br><br>But this is not true. All initial values are provided here. If I generate values it tricks another error. Can anyone spot the problem? [...]
2024-01-17T12:10:41+00:00José María Grisolía Santoshttps://www.jiscmail.ac.uk/cgi-bin/wa-jisc.exe?A2=BUGS;67b48869.2401