Daniel Oberski

survey methodology statistics latent class analysis latent variable modeling mixture models social science latent variable clustering big data official statistics measurement error misclassification reliability validity mixture modeling model fit model selection latent variables differential privacy privacy incidental data data exhaust methodology social media data science complex survey irt complex sample structural equation model item response theory weighting stratification variance estimators stratification complex sampling weighting data analysis r-project multistage surveys sandwich estimators complex surveys structural equation modeling r open source administrative data veracity register data questionnaire design sqp meta-analysis polling european social survey expert systems question design questionnaires local dependence differential item functioning measurement invariance sensitivity analysis