How are calculated the factors γ1 and γ2 for estimating origin-destination matrices?

Marcos Medina-Tapia @Marcos_Medina-Tapia

09 September 2018 1 152 Report

For the estimation of static origin-destination matrices using traffic counts, Abrahamsson (1998) and other authors propose an objective function that has two components F1 (related to the target matrix) and F2 (related to traffic flows). A factor multiplies each function: γ1 multiplies F1, and γ2 multiplies F2. If the target OD matrix is very reliable, γ1 should be large compared to γ2. I am looking for a mathematical methodology for calculating γ1 and γ2. Is there a methodology for estimating these factors?

Bart Jourquin

Could section 3.3 of this http://pure.iiasa.ac.at/id/eprint/5627/1/IR-98-021.pdf be helpful ? Several techniques are suggested...

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