[R-sig-ME] Incorrect output from nested model with mapped pars
Christopher Nottingham
c@nott|ngh@m @end|ng |rom @uck|@nd@@c@nz
Tue Jun 30 07:06:07 CEST 2020
I have a dataset with a variable labelled n_comm that is not relevant to some factor level combinations. I am fitting a nested model to this data and fixing betas representing the irrelevant factor combinations to 0 using map. As shown following, the model output from the summary table does not match what should be produced.
> map_names = list(beta = factor(c(1:6, NA, 8)))
> fit = glmmTMB(log(Err) ~ model + n_surv + species + n_comm:geostatistical + intensity,
+ data = Bhat_all.df,
+ start = list(beta = ifelse(is.na(map_names$beta), 0, 1)),
+ map = map_names)
> summary(fit)
Family: gaussian ( identity )
Formula: log(Err) ~ model + n_surv + species + n_comm:geostatistical + intensity
Data: Bhat_all.df
AIC BIC logLik deviance df.resid
18340.8 18394.7 -9162.4 18324.8 6212
Dispersion estimate for gaussian family (sigma^2): 1.11
Conditional model:
Estimate Std. Error z value Pr(>|z|)
(Intercept) 9.329e+00 5.461e-02 170.82 <2e-16 ***
modelbiomass-dynamics -4.082e+00 5.089e-02 -80.22 <2e-16 ***
modelsize-structured -4.092e+00 5.056e-02 -80.93 <2e-16 ***
n_surv -8.895e-04 8.146e-05 -10.92 <2e-16 ***
species$\\mathit{S. aequilatera}$ 5.596e-01 2.677e-02 20.90 <2e-16 ***
intensityFishing intensity: high 3.589e-01 2.681e-02 13.39 <2e-16 ***
n_comm:geostatisticalFALSE 0.000e+00 7.450e-05 0.00 1.000
n_comm:geostatisticalTRUE -3.245e-04 5.461e-02 -0.01 0.995
---
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
Warning message:
In cbind(Estimate = coefs, `Std. Error` = sqrt(diag(vcov))) :
number of rows of result is not a multiple of vector length (arg 2)
> rbind(sqrt(diag(solve(fit$obj$he()))))
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8]
[1,] 0.05458617 0.05086506 0.05053495 8.142355e-05 0.02675588 0.02679859 7.446289e-05 0.01792267
> fit$sdr
sdreport(.) result
Estimate Std. Error
beta 9.3291879616 5.461347e-02
beta -4.0822725635 5.089050e-02
beta -4.0920631052 5.056022e-02
beta -0.0008895195 8.146427e-05
beta 0.5595933469 2.676926e-02
beta 0.3589326271 2.681199e-02
beta -0.0003244617 7.450013e-05
betad 0.1082286532 1.793163e-02
Maximum gradient component: 0.001913387
The output below is wrong (there should be no std err, on a mapped value and the other values are incorrect.),
n_comm:geostatisticalTRUE -3.245e-04 5.461e-02 -0.01 0.995
The dataset is attached as a rds for reproducibility.
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