Hi Sian,
My predint.txt macro is going to be tricky to replicate for bigger datasets - basically the following is done:
1) The residual chains have been stored stacked up in c200 - there are 130 of them as there are 65 schools (intercepts and slopes)
2) The school ids go from 1 to 65 which is ...
Search found 162 matches
- Tue Sep 11, 2012 2:08 pm
- Forum: MLwiN user forum
- Topic: predint.txt problems
- Replies: 1
- Views: 5851
- Wed Jul 18, 2012 2:39 pm
- Forum: MLwiN user forum
- Topic: Variance disappearing in shift from 2- to 3-level model
- Replies: 4
- Views: 7962
Re: Variance disappearing in shift from 2- to 3-level model
Hi Matt,
I am still a little puzzled. If as you say there are 13 categories for each GOR then a nested 3 level model should have 12 level 3 with 12*13 categories = 156 level 2 units. The only way that categories should be 13 would be if you had a cross-classified model. Am happy to take a look if ...
I am still a little puzzled. If as you say there are 13 categories for each GOR then a nested 3 level model should have 12 level 3 with 12*13 categories = 156 level 2 units. The only way that categories should be 13 would be if you had a cross-classified model. Am happy to take a look if ...
- Thu Jun 28, 2012 2:23 pm
- Forum: MLwiN user forum
- Topic: Variance disappearing in shift from 2- to 3-level model
- Replies: 4
- Views: 7962
Re: Variance disappearing in shift from 2- to 3-level model
Hi Mattoftheday,
your email puzzles me a little. When you say you have a structure of 12 > 13 > 84 do you in fact mean 12 GORS with 12*13 Categories within the 12 i.e. categories within GOR or do you mean you have a cross-classified structure with GOR crossed by Category ? Either way these sorts of ...
your email puzzles me a little. When you say you have a structure of 12 > 13 > 84 do you in fact mean 12 GORS with 12*13 Categories within the 12 i.e. categories within GOR or do you mean you have a cross-classified structure with GOR crossed by Category ? Either way these sorts of ...
- Mon May 21, 2012 8:50 am
- Forum: MLwiN user forum
- Topic: one-tailed test for a predictor in MCMC
- Replies: 2
- Views: 8043
Re: one-tailed test for a predictor in MCMC
Hi Sian,
I think you are a little confused here. The DIC diagnostic is an information criterion that can be used to compare models in a similar way to the AIC and BIC in a non-Bayesian/MCMC setting. What it is not is equivalent to 'a two-tailed test at 5% significance level'. The closest thing in ...
I think you are a little confused here. The DIC diagnostic is an information criterion that can be used to compare models in a similar way to the AIC and BIC in a non-Bayesian/MCMC setting. What it is not is equivalent to 'a two-tailed test at 5% significance level'. The closest thing in ...
- Mon May 21, 2012 8:42 am
- Forum: MLwiN user forum
- Topic: question about a cross-classified model
- Replies: 2
- Views: 7194
Re: question about a cross-classified model
Hi Jelle,
Yes this sounds appropriate for the analysis you intend to do. I would firstly look at each of the 2 ratings separately and fit a straightforward single response cross-classified model as in the chapter in my MCMC book. To fit a MV model you will need to follow the example in the MV ...
Yes this sounds appropriate for the analysis you intend to do. I would firstly look at each of the 2 ratings separately and fit a straightforward single response cross-classified model as in the chapter in my MCMC book. To fit a MV model you will need to follow the example in the MV ...
- Mon Aug 15, 2011 1:23 pm
- Forum: MLwiN user forum
- Topic: Cross-classified multinomial problems
- Replies: 2
- Views: 8381
Re: Cross-classified multinomial problems
This shouldn't be too bad in MCMC. Basically set up your model as in the MCMC manual chapter for multinomial then add on the extra levels as you would anyway. Ignore any error messages from IGLS. Switch to MCMC and tick the cross classified box as in the cross classified chapter in the MCMC manual ...
- Mon Aug 15, 2011 1:20 pm
- Forum: MLwiN user forum
- Topic: Error 1909 using MCMC on Multivariate data
- Replies: 1
- Views: 6552
Re: Error 1909 using MCMC on Multivariate data
Hi Thomasm,
If you wish to create imputed datasets to fill in what will ultimately be X variables in your model to fit you need to have them as response variables in the imputation model you first fit.
Say for example with the hungary dataset your final model is going to be a regression of biol ...
If you wish to create imputed datasets to fill in what will ultimately be X variables in your model to fit you need to have them as response variables in the imputation model you first fit.
Say for example with the hungary dataset your final model is going to be a regression of biol ...
- Mon Aug 15, 2011 1:11 pm
- Forum: MLwiN user forum
- Topic: CIs for slope residuals
- Replies: 1
- Views: 5003
Re: CIs for slope residuals
Hi Dave,
I took a look at your data and discovered that the IGLS algorithm is estimating a non-positive definite variance matrix at level 2. Apologies for the technical jargon but basically if you were to look at your
estimates for the between TherID variance matrix in the Estimate Tables window ...
I took a look at your data and discovered that the IGLS algorithm is estimating a non-positive definite variance matrix at level 2. Apologies for the technical jargon but basically if you were to look at your
estimates for the between TherID variance matrix in the Estimate Tables window ...
- Tue Aug 03, 2010 3:02 pm
- Forum: MLwiN user forum
- Topic: Residuals in MCMC
- Replies: 1
- Views: 5549
Re: Residuals in MCMC
Hi Michael,
Rather impressively you are the first person to spot this mistake - yes the elements given give 90% not 95% confidence intervals. If/When I get around to updating the manual next I'll try and amend this.
Thanks,
Bill.
Rather impressively you are the first person to spot this mistake - yes the elements given give 90% not 95% confidence intervals. If/When I get around to updating the manual next I'll try and amend this.
Thanks,
Bill.
- Fri May 21, 2010 1:54 pm
- Forum: MLwiN user forum
- Topic: MCMC Error in CAR modelling
- Replies: 1
- Views: 5760
Re: MCMC Error in CAR modelling
Hi Karen,
I could take a look if you were happy to send on the worksheet. Note i and j might refer to the areas in the order the software receives them and not the labels they have.
Bill.
I could take a look if you were happy to send on the worksheet. Note i and j might refer to the areas in the order the software receives them and not the labels they have.
Bill.