*3.2. Calibration*

The utilities *Vyes*/*θ* and *Vno*/*θ* are specified in terms of attributes and parameters that require calibration from the observed data.

The calibration of the parameters can be carried out through surveys of single users (disaggregated data) or through user flows (aggregated data). The models adopted referring to individual users require the calibration of the vector of parameters with disaggregated RP and SP data and the maximum likelihood approach. Assuming independent observation n, the vector of the calibrated parameters (*β\**) is obtained by the following:

$$\mathcal{B}^\bullet = A \text{arg } \max\_{\mathcal{B}} L(\mathcal{B}) \tag{6}$$
