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دانلود رایکان مقاله انگلیسی ISI با موضوع کالیبراسیون مدل ترافیک شبیه سازی خرد با استفاده از روش شبکه های عصبی

عنوان فارسی مقاله:

کالیبراسیون مدل ترافیک شبیه سازی خرد با استفاده از روش شبکه های عصبی

عنوان انگلیسی مقاله:

Calibration of microsimulation traffic model using neural network approach

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4. Validation of the calibrated model

The validation procedure is comprised of two steps and it involves a comparison of simulation results obtained by an uncalibrated and a calibrated VISSIM microsimulation model with traffic indicators measured in the field. The first validation was done for two new sets of data measured at the same roundabout where the calibration is done (roundabout I). The second validation, done on the set of data measured at the second roundabout (roundabout II), gives an insight into the dilemma whether the calibration process is tied to the one particular roundabout or it may be considered in a broader context.

4.1. First validation

The first validation was performed at the same roundabout at which calibration procedure was carried out. The first validation data set of traffic parameters was measured on Wednesday, March 3rd 2010, between 4 and 5 p.m., and the second one was gathered on Wednesday, July 14th 2010, between 2 and 3 p.m.