Is there a leverage diagnostic test for glmmTMB models?
? As I mentioned in my CrossValidated answer https://stats.stackexchange.com/questions/478727/leverage-diagnostic-test-not-supported-for-glmmtmb-models-in-r/479298#479298 , this does work with the add-on influence_mixed function in the glmmTMB package ; you just need to specify? group=".cases" (or leave the group blank, since ".cases" is the default value). ?? This doesn't use hatvalues, which as I commented there aren't available (yet) for glmmTMB; instead, it does brute-force leave-one-out computations (although it can do them in parallel). ?? It would be a good idea making this functionality more easily available, but I've messed up in the past when trying to export 'car' functionality, so I'd like to be careful. ? cheers ??? Ben
On 7/27/20 3:47 PM, John Fox wrote:
Dear April, Unfortunately, there's no hatvalues() method for "glmmTMB" objects, nor do functions in the car package, where the influenceIndexPlot() function that you tried to use originates, have "glmmTMB" methods. car does have methods for the "merMod" objects produced by functions in the lme4 package and for the "lme" objects produced by the lme() function in the nlme package, but those probably aren't useful to you. I'm willing to look into providing the necessary infrastructure in the car package to support glmmTMB() but can't promise to do that before the Fall. Best, ?John -------------------------------------------- ? John Fox ? Professor Emeritus ? McMaster University ? Hamilton, Ontario, Canada ? web: https://socialsciences.mcmaster.ca/jfox/ On 7/27/2020 1:40 PM, April Martinig wrote:
Hello, I've posted my question to Cross Validated, but I am also linking to it here <https://stats.stackexchange.com/questions/478727/leverage-diagnostic-test-not-supported-for-glmmtmb-models-in-r> because it might have been missed. I am trying to use the DHARMa package to test for how much leverage specific points (on one extreme) for my response variable has on my output. In my question I have posted the data, what I have tried, and linked to other sources. Thank you in advance. Take care, April --- April Martinig, M.Sc. Ph.D. Candidate in Ecology University of Alberta martinig.weebly.com ?I do not accept the conventional order of things as a given." https://stats.stackexchange.com/questions/478727/leverage-diagnostic-test-not-supported-for-glmmtmb-models-in-r <https://stats.stackexchange.com/questions/478727/leverage-diagnostic-test-not-supported-for-glmmtmb-models-in-r>. ????[[alternative HTML version deleted]]
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