Fitting multi-response mixed effects models with lmer
Hi Tom, First of all, thank you for the response, Yes, I do know about Stan, but given that I only need a maximum likelihood estimator, using Stan seemed a bit too heavy. I will take a look to your tutorials nonetheless and to ASreml. Best, Alejandro
On 14 Jul 2019, 13:24 +0300, Tom Houslay <houslay at gmail.com>, wrote:
Hi Alejandro, There are a few packages in R that you can use for multi-response mixed models, such as MCMCglmm, brms, and wrappers for Stan, as well as ASreml-R (if you have an ASreml licence). ASreml is the only one of those that uses REML, while the others are Bayesian. I have some tutorials on fitting these types of models in MCMCglmm and ASreml-R here in case they are useful: https://tomhouslay.com/tutorials/ Cheers, Tom
Date: Sat, 13 Jul 2019 18:02:20 +0300 From: Alejandro Catalina <alecatfel at gmail.com> To: r-sig-mixed-models at r-project.org Subject: [R-sig-ME] Fitting multi-response mixed effects models with ? ? ? ? lmer Message-ID: <e44b3683-1a88-45f8-8dc8-1c07595c0dd7 at Spark> Content-Type: text/plain; charset="utf-8" Dear all, I found myself trying to fit a multi-response model with lmer the other day and today I learned that it is indeed not implemented. Is there anyone looking on that direction or does anyone have any pointers or suggestions? I guess I can iteratively fit one model for each response but I?m guessing that would be much slower. Furthermore, I would need to later combine all the models into a single object for my specific requirements. This is the issue I opened on lme4?s GitHub: ? ? ? ? Hi, I am trying to solve the following formula with?lmer: cbind(y.1, y.2, y.3) ~ u + (u | floor_id) + (u | county_id) which works fine for standard?lm?models without the group terms, but it fails when I have the mixed effects terms with the following error: Error in initializePtr() : updateMu: Size mismatch If this is not the right place to post this issue please tell me, I appreciate any pointers forward. Thank you all, Best, Alejandro