Bart Jourquin

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Questions related from Bart Jourquin

Logit models: how-to efficiently identify valid Box-Cox lambda's to transform independent variables?

Freight transport modal choice models used in the context of studies covering large inter-regional or international areas are generally difficult to set up because of lack of precise or even...

31 August 2020 5,719 0 View

R 3D plot with centered axis ?

I want to represent a series of results computed from y = f(x1, x2, x3), with x1, x2 and x3 being in the [-2, +2] range. For now, I use the "scatter3d" package, and an example of a resulting...

22 December 2019 5,207 4 View

How to simplify a routable transport network ?

I try to use OpenStreetMap (OSM) to create a large (several countries) network of main roads, railways and inland waterways. These networks will be used for transport policy related questions. The...

03 May 2019 707 6 View

How can I compare the (relative) performances of network models?

This question is related to the measure of estimation and forecast accuracy in (freight) transportation network models. input data : origin-destination (O-D) matrixes at the European regional...

02 October 2014 801 2 View

How can I compare the performance of different modal choice models on a per O/D basis?

My basic data set is a merge of 3 origin-destination matrixes (one per transportation mode). These matrixes are the "observed" data. The modal choice model has to estimate/predict the modal split...

25 September 2014 9,288 8 View