Transit Modeling Guidance by Rosella Picado and ... - FSUTMSOnline
Transit Modeling Guidance by Rosella Picado and ... - FSUTMSOnline
Transit Modeling Guidance by Rosella Picado and ... - FSUTMSOnline
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Destination Choice Estimation<br />
Sampling-<strong>by</strong>-importance:<br />
• Define an ‘importance’ function:<br />
W = exp( D ) × S<br />
P<br />
ij<br />
ij<br />
=<br />
W<br />
∑<br />
j<br />
ij<br />
W<br />
ij<br />
−α<br />
ij<br />
j<br />
• Importance function gives the probability of being selected<br />
as the destination zone<br />
• Sample from this probability distribution to select the<br />
destination choice set (20 – 40 draws) for each observed<br />
trip record
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