Hi, The implementation in SUMO is not 100% identical with the original Gawron model. 1. In the current SUMO, tau_g(s) is the cost for Route s, which is calculated from the aggregated and averaged link costs in the simulation in the current iteration. tau_d(s) is the cost for Route s in Driver d’s route set, calculated in the previous iteration. 2. As the long as a route is in a route set, its cost will be updated in every iteration in SUMO. When the number of routes in a route set is more than 5 (current default), the routes with the smallest probabilities will be removed from the route set.
More related explanations can be found under the points: “Number of Routes in each traveller's route set” and “Updates of Travel Time” at https://sumo.dlr.de/docs/Demand/Dynamic_User_Assignment.html Kind regards, Yun-Pang Von: sumo-user <[email protected]> Im Auftrag von ali mirzaei Gesendet: Freitag, 27. August 2021 13:55 An: Sumo project User discussions <[email protected]> Betreff: [sumo-user] update of travel time Hi everyone, In the ~.alt.rou file of iteration i, there are two routes r and s. In the next iteration, the r route is chosen and in ~.alt.rou of iteration i+1, we will update the travel time of these routes. According to what Gawron says, for not remembering the routes which have not used for a long time, the updated travel time of the route s will be: [image.png] I want to know: 1- The difference between the underlined variables. 2- The meaning of "how long". Does is it refer to any specific number of iterations? Best regards, Ali
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