MATSim Code

use object pool for coords

make thresholds match the returned network at the end of iteration

express "secondary threshold" in terms of "reduction"

(theta in the paper). This is better for the calibration process, as
this allows the secondary threshold to follow the evolutions of the
primary threshold.

dump evolution of thresholds in a file

create a class to iterate the model to calibrate "thresholds"

this corresponds to the "manual calibration" of the paper. Instead that
I do not want to manually calibrate anything.

use log( dist + 1 ) instead of log( dist ) in utility

otherwise, utility of being friend with somebody living in the same
building is infinite. Distance usually being expressed in meter, this
should not change much to the results for friends living farther than
one meter away... This should be tested, though.

much faster secondary tie search

average personal network size

allow egos without ties

"utils" class to produce sna statistics