| M. Bierlaire and Ph.L.Toint (1994), Meuse: An origin-destination matrix estimator that exploits structure, Transportation Research, 29B. |
....of distributional assumptions is one important advantage of the GLS approach. One experience seems to be that the models are much more sensitive to variations and inaccuracies in the traffic count data and the target OD matrix than to values of the parameters, see e.g. Cascetta (1984) or Bierlaire and Toint (1994). The parameters include the dispersion matrices Z and W used in the problem formulation (3.14) below. As in the ML approach the target OD matrix and the observed traffic counts are assumed to be mutually independent. If the target OD matrix g has an error with a variance covariance matrix Z and ....
M. Bierlaire and Ph.L.Toint (1994), Meuse: An origin-destination matrix estimator that exploits structure, Transportation Research, 29B.
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