Introduction to Linear Mixed Effects Models and GLMM with R-INLA | - CCMAR -
 

Introduction to Linear Mixed Effects Models and GLMM with R-INLA

Monday, September 7, 2020 to Friday, September 11, 2020
 
Course Description 

The course begins with a brief revision of multiple linear regression, followed by an introduction to Bayesian analysis and how to execute regression models in R-INLA. We then explain linear mixed effects models to analyse nested data, followed by a series of mixed modelling exercises in R-INLA. Nested data means multiple observations from the same animal, site, area, nest, patient, hospital, vessel, lake, hive, transect, etc. In the second part of the course GLMMs are applied on count data, binary data (e.g. absence/presence of a disease), proportional data (e.g. % coverage) and continuous data (e.g. biomass or distance) using the Poisson, negative binomial, Bernoulli, binomial, beta and gamma distributions. In the third part of the course we show how R-INLA can be used to execute GLMs with temporal dependency for the analysis of univariate and multivariate time series. We will use R-INLA.

 

 

Format 

COURSE FEE: 500 GBP
Credit card payments are charged in GBP currency. UK participants are subject to 20% VAT. EU participants (but non-UK) are not subject to UK VAT, but need to provide their institutional VAT number. Non-EU participants are not subject to VAT.

REGISTER HERE

 

COURSE MATERIAL:
• Pdf files of all powerpoint presentations are provided.
• These powerpoint files are based on various chapters from:
     • Zuur, Ieno, Saveliev (2017). Beginner's Guide to Spatial, Temporal and Spatial-Temporal Ecological Data Analysis with R-INLA.
     • This book is not included in the course fee. The course can be followed without purchasing this book.

GENERAL
• You need to bring your own laptop.
• Please ensure that you have system administration rights to install R and R packages on your computer.
• Instructions for what to install will be provided before the start of the course.
• You will be given access to a course website with around 25 fully worked-out R exercises. These are all based on published papers and real data sets.

CANCELLATION POLICY:
What if you are not able to participate? Once participants are given access to course exercises with R solution codes, pdf files of certain book chapters, pdf files of powerpoint files and video solution files, all course fees are non-refundable. However, we will offer you the option to attend a future course or you can authorise a colleague to attend this course. For terms and conditions go to: http://highstat.com/index.php/sign-up2

RECOMMEND LITERATURE:
• Zuur, Ieno, Saveliev (2017). Beginner's Guide to Spatial, Temporal and Spatial-Temporal EcologicalData Analysis with R-INLA.
• This book is available from www.highstat.com.

 

Pre-requisites 

Working knowledge of R, data exploration, linear regression and GLM (Poisson, negative binomial, Bernoulli). 

 

Agenda 

COURSE TIMES:

Monday - 09.00am to 16.00pm
• Brief revision of multiple linear regression in R
• One exercise
• Introduction to matrix notation
• Brief introduction to Bayesian analysis
• Conjugate priors
• Diffuse versus informative priors
• Brief theory presentation on INLA
• Exercise how to fit a regression model in R-INLA


Tuesday - 09.00am to 16.00pm
• Theory presentation on linear mixed effects models
• Two exercises showing how to apply linear mixed effects models in R-INLA
• Random intercept and slope models
• Sketching fitted values


Wednesday - 09.00am to 16.00pm
• Using multiple variances (GLS) in R-INLA
• One exercise
• Brief revision GLM
• One exercise showing how to execute a Poisson GLM and negative binomial GLM in R-INLA
• Three GLMM exercises in R-INLA
• Poisson GLMM
• Negative binomial GLMM
• Poisson and negative binomial GLMMs with two-way nested and crossed random effects


Thursday - 09.00am to 16.00pm
• A series of exercises covering the applications of Bernoulli, binomial, gamma and beta GLMMs in R-INLA


Friday - 09.00am to 12.00
• Theory presentation on temporal trends and residual auto-correlation
• Two exercises showing the analysis of (univariate and multivariate) time series using GLMs in R-INLA


1-hour lunch and a 20-minute break, both morning and afternoon. There will be no lunch on Friday.

 

Intended Audience 
CCMAR and non-CCMAR community
Scientific Organisation 
Instructors 

Dr. Alain Zuur

Highland Statistics Ltd.
Alain got his PhD at The Netherlands Institute for Sea Research and worked at the Marine Laboratory in Aberdeen. Afterwords he opened his own business at Highland Statistics, focused on the core business activities like teaching courses, writing books (and the occasional paper) and consultancy.

Dr. Elena Ieno

Highland Statistics Ltd.
Elena is a senior marine biologist with over 15 years of experience in teaching statistics to biologists and environmental scientists. She finished her postdoc at the University of Aberdeen (UK), she works now a full time as a statistics instructor. She has authored and co-authored 10 books on the analysis of ecological data and she has also written two case study chapters on the analysis of time series applied on environmental indices and forensic entomology.
Venue 

Centre of Marine Sciences (CCMAR)
Building 7, Gambelas Campus
University of the Algarve, Faro

 

Location 
Type of Training 
Advanced Training
Presentation Language 
English