Spatial Microsimulation with R  book cover
1st Edition

Spatial Microsimulation with R

ISBN 9781498711548
Published March 21, 2016 by Chapman & Hall
282 Pages 35 B/W Illustrations

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Book Description

Generate and Analyze Multi-Level Data
Spatial microsimulation involves the generation, analysis, and modeling of individual-level data allocated to geographical zones. Spatial Microsimulation with R is the first practical book to illustrate this approach in a modern statistical programming language.

Get Insight into Complex Behaviors
The book progresses from the principles underlying population synthesis toward more complex issues such as household allocation and using the results of spatial microsimulation for agent-based modeling. This equips you with the skills needed to apply the techniques to real-world situations. The book demonstrates methods for population synthesis by combining individual and geographically aggregated datasets using the recent R packages ipfp and mipfp. This approach represents the "best of both worlds" in terms of spatial resolution and person-level detail, overcoming issues of data confidentiality and reproducibility.

Implement the Methods on Your Own Data
Full of reproducible examples using code and data, the book is suitable for students and applied researchers in health, economics, transport, geography, and other fields that require individual-level data allocated to small geographic zones. By explaining how to use tools for modeling phenomena that vary over space, the book enhances your knowledge of complex systems and empowers you to provide evidence-based policy guidance.

Table of Contents

Introducing spatial microsimulation with R
Who this book is for and how to use it
A definition of spatial microsimulation
Learning by doing
Why spatial microsimulation with R?
Learning the R language
Typographic conventions
An overview of the book

SimpleWorld: A worked example of spatial microsimulation
Getting setup with the RStudio environment
SimpleWorld data
Generating a weight matrix
Spatial microdata
SimpleWorld in context

What is spatial microsimulation?
What spatial microsimulation is not

Generating spatial microdata
Data preparation
Accessing the input data
Target and constraint variables
Loading input data
Subsetting to remove excess information
Re-categorising individual level variables
Matching individual and aggregate level data names
‘Flattening’ the individual level data

Population synthesis
Weighting algorithms
Iterative Proportional Fitting
Integerisation and expansion
Comparing ipfp with mipfp

Alternative approaches to population synthesis
Population synthesis as an optimization problem
The Urban Data Science Toolkit (UDST)

Spatial microsimulation in the wild
Selection of constraint variables
Preparing the input data
Using the ipfp package
Using the mipfp package
Comparing methods of reweighting large datasets

Model checking and evaluation
Internal validation
Empty cells
External validation

Population synthesis without microdata
Global cross-tables and local marginal distributions
Two level aggregated data

Household allocation
Independent data (individuals and households)
Cross data: individual and household level information

Modelling spatial microdata
The TRESIS approach to spatial microsimulation
Overview of TRESIS modelling system
Synthetic households
Using demand models to allocate synthetic households to zones using R

Spatial microsimulation for agent-based models
ABM software
Setting up SimpleWorld in NetLogo
Allocating attributes to agents
Running SimpleWorld
Control the ABM from R

Appendix: Getting up to speed with R



A summary appears at the end of each chapter.

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Robin Lovelace is a University Academic Fellow at the University of Leeds specializing in methods of spatial data analysis and applied transport modeling. Creator of the stplanr package and a number of popular tutorials, he is an experienced R user, teacher, and developer. Robin uses open source software daily for spatial analysis, map making, statistics, and modeling. His current research focuses on online interactive mapping and modeling to provide the evidence base needed for a transition away from fossil fuels in the transport sector.

Morgane Dumont is an applied mathematician currently undertaking a PhD at the University of Namur. She has a wealth of experience programming in R, Python, C, Fortran, and MATLAB®. Her research focuses on forecasting the health needs of the elderly in 2030 for Belgium. To achieve this aim, Morgane is developing a synthetic population for Belgium as an input to an agent-based model.


". . . the book provides an excellent introduction to the theory and practice of spatial microsimulation, as well as a bridge to working in R to actually do the various tasks described . . ."
—Ezra Haber Glenn, Journal of Statistical Software

"In this groundbreaking book, the authors present the ideas behind spatial microsimulation, giving clear, user-friendly guidance using the open source software R. Spatial Microsimulation with R provides the reader with firm knowledge of the field as well as the tools to apply the methods to his or her own data. Written in an extremely accessible way, this book demonstrates the key steps in spatial microsimulation, from theory into practice. It will be deservedly instrumental in fuelling the growing interest in spatial microsimulation amongst geographers, economists, urban and regional planners, and public- and private-sector decision makers."
—Richard Harris, Professor of Quantitative Social Geography, University of Bristol

"This book fills an important gap in the existing literature. What is currently missing is a book mapping out the complete picture from what spatial microsimulation is and why it is useful, how to prepare the data, how to actually build the model, how to validate it, and how to use the resulting dataset. A particular strength of the book is the close connection between theory and implementation. The book includes very useful code snippets while the complete scripts are provided on the corresponding Github repository—this clearly sets standards for open science."
—Ulrike Deetjen, Oxford University

"Lovelace and Dumont provide a great service to the microsimulation community in developing a clear and coherent exposition of the use of the R computer language for implementing spatial applications. Required reading for all those involved in agent-based and microsimulation modeling."
—Michael Batty, Centre for Advanced Spatial Analysis, University College London

"Spatial Microsimulation with R is a well-written and concise work on a topic of broad appeal. The book is structured in a logical way, which makes it straightforward for the reader to pull out pertinent information. It is a useful reference that provides value for individuals of diverse backgrounds and can be a valuable resource for individuals seeking new applications for spatial microsimulation."
—Journal of the American Statistical Association

" . . .this book is an excellent resource for everyone who want to learn how to do spatial microsimulation. The possibility to download the contents of the book, compile it andwork interactively with the code also makes it a great example of dynamic documents and reproducible research."
—Netherlands Environmental Assessment Agency (PBL)

"There are multiple books on spatial microsimulation and hundreds more research papers detailing the various applications of studies. However, bar a few exceptions, they lack transparency and reproducibility. It creates a situation whereby researchers simultaneously encourage the uptake of the method, whilst also creating barriers by obscuring methodologies. Lovelace and Dumont’s book sets to address this flaw through demonstrating how to undertake a spatial microsimulation. . . Where the book sets itself apart from other books is in its applied nature. At the centre of their approach is a ‘learn by doing’ mentality which serves the book well. Examples are used to demonstrate approaches and the authors encourage thinking beyond the material presented. Of note, Lovelace and Dumont show step-by-step what is happening when using IPF and how to code this, rather than jumping straight to bespoke R packages that can run it in single lines of code (which are also covered). Content is always clearly set out, with each step explained in detail. The approach helps to guide the reader along in understanding fairly complicated methods. . . Lovelace and Dumont’s book is a fine addition to the library of anyone interested in quantitative methods, let alone those wanting to generate their own spatial microdata."
—Mark A. Green, Applied Spatial Analysis