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bbolker

Ben Bolker

Recently Published

diagonal var-cov matrices and reparameterization
demonstrates *non*-equivalence of models with structured variance-covariance matrices under reparameterization
Publish Document
Wald std errors for random-effects variances etc. from lme4 models
lme4 convergence testing problems
exploration of some of the problems with *testing* for convergence in lme4
Publish Document
a small Gamma GLMM example
stats stuff you should think about
basic ideas about experimental design, exploratory analysis, etc.
SIR stoch sim/gillespie
A quick&dirty implementation of a Gillespie algorithm for running SIR models
glmer with constraints
Quickie reprodubility graph
Grabbing & plotting data from Vines et al. 2014 and Young 2015
lme4 refitting speedups
toenail_check
comparisons of Laplace approximation implementations for oncholysis (toenail) data
proftest
lme4 profile testing
backtransformation issues
glmer_offset
exploring issues with an offset in glmer
Reyes_rogers
an example of fitting the Rogers random predator equation where it turns out that least-squares Holling type II is fine
zinb_power
salamander
hazodds2
troubleshooting_conv
lme4 troubleshooting example
brant_survive
fit logistic models (regular GLM or GLMM) with power-logistic links to account for exposure
varwald
schizo
relrisk
varFac
more simulation/fitting of models where residual or RE variance varies across levels of a fixed factor
lme4_sims
kt_rep_example
weak vs strong Allee effects
GLMMs: worked examples
Beverton-Holt fitting example
Salamander GLMM
Haiku evaluation
Degenerate design matrices
Factor-specific variances in R
Stuff with contrasts
“Downdated VtV” example
Mixed model simulations
Math sounds
Carvalho data analysis
Canadian homicide rates
Aggregation issue
LME code
fir analysis
ace_example
running ace (ancestral state reconstruction) from ape on a small, badly behaved problem