New Economic Geography model with R

New economic geography model with R We first need to read in some packages ################################################################ # Read in libraries ################################################################ library(nleqslv) # for solving system of nonlinear equations library(ggplot2) # for structurally making plots library(ggthemes) # for using economist theme library(dplyr) # for data wrangling library(cowplot) # for combining plots Then we define constants ################################################################ # Define parameters ################################################################ L <- 2.0 # Total labor force phi1 <- 0.

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Migrating from Jekyll to Hugo

Introduction For quite some time I have been thinking about migrating my (very small) website to the Hugo platform. Mostly because I admire the information rich structure of Kieran Healy’s website and he converted already from Jekyll to Hugo a while ago. Because my website is indeed quite small, it does not suffer from Jekyll oftentimes being slow. However, I needed some additional features of my Jekyll site (e.g., converting bibtex to a reference list), which could not automatically be rendered by Github which is my choice of deployment.

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Sortingmod: an R-package for sorting models

Overview sortingmod is a package for estimating the sorting model - a discrete choice model which explains the location decision of heterogeneous individuals over a set of alternative locations. The model is developed by Bayer et al. (2004) following the work of Berry et al. (1995). It relies on the assumptions that individuals choose a location that maximizes their utility, and that heterogeneous individuals with different characteristics have different preferences, and different valuation for location characteristics.

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Recent publications

  • Wim bernasco, Thomas de Graaff, Jan Rouwendal, Wouter Steenbeek (2017) Social Interactions and Crime Revisited. An Investigation Using Individual Offender Rates. Review of Economics and Statistics, 99(4), 622-636. Abstract DOI Online
  • Otto Raspe, Martijn van den Berge, Thomas de Graaff (2017) Stedelijke regio's als motoren van economische groei. Wat kan beleid doen?. PLB (planbureau voor de Leefomgeving), Den Haag, 2901. Abstract Online
  • Zhiling Wang, Thomas de Graaff, Peter Nijkamp (2017) Look Who's Talking. On the Heterogeneous Returns to Foreign Language Use at Work among Natives and Migrants in Europe. GLO Discussion Paper, No. 104. Abstract Online  pdf
  • Sergejs Gubins, Thomas de Graaff, Jos van Ommeren (2017) Does new information technology change commuting behavior. Working paper. Abstract  pdf

Recent and upcoming seminars

  • Regional Drivers of Growth. (31 August 2017) More info...
  • Look Who Is Talking (II). (15 June 2017) More info...
  • Does new information technology change commuting behavior?. (1 June 2017) More info...
  • Look Who Is Talking (I). (26 August 2016) More info...