85177 - LATENT VARIABLE MODELS

Scheda insegnamento

Anno Accademico 2018/2019

Conoscenze e abilità da conseguire

By the end of the course the student acquires knowledge of multivariate statistical methods based on latent variable models for the analysis of categorical and continuous data. The student is also able to choose the best method to perform multivariate analyses of a given dataset and to interpret the obtained results.

Programma/Contenuti

Introduction to the latent variable models.

The normal linear factor model: specification, maximum likelihood estimation by the EM algorithm, goodness of fit.

Latent trait model with binary data: specification of logit/normit model and normit/normit model, model estimation by the E-M algorithm, goodness of fit.

Latent trait model with polytomous and ordinal data: specification and parameter interpretation. The underlyng variable approach.

Latent class model with binary data: specification, identifiability, maximum likelihood estimation, goodness of fit.

 

 

Testi/Bibliografia

Bartholomew D., Knott M., Moustaki I (2011), Latent variable models and factor analysis : a unified approach / third ed. Chichester, UK : Wiley.

 

Bartholomew D., Moustaki I., Steele F., Galbraith J.I. (2002), The Analysis and Interpretation of Multivariate Data for Social Scientists,Chapman and Hall/CRC.

Metodi didattici

Lectures and tutorials

Modalità di verifica dell'apprendimento

The exam consists of a mandatory written exam. It is composed by questions concerning the theoretical aspects  and questions mainly focused on the data analysis and the interpretion of the results. During the exam the use of textbooks, notes and computers tools are not allowed.

Strumenti a supporto della didattica

Teacher's notes available at the web-site http://www2.stat.unibo.it/cagnone.

Orario di ricevimento

Consulta il sito web di Silvia Cagnone