ProbitPathProb: Probability of path choices using probit model.

In MartinLHazelton/transportation: What the Package Does (One Line, Title Case)

Probability of path choices using probit model.

Description

This function calculates probabilities for selection of each path on the network based on set of path disutilities (costs). The function uses a probit random utility model. Calculations are exact for two route networks. In other case the probabilities are approximated by simulation.

Usage

ProbitPathProb(u, ODpair, A, theta, Niter = 1000)

Arguments

u	Vector of utlities on each path
ODpair	Vector indicating the OD pair serviced by each route.
A	Path-link incidence matrix
theta	Vector of standard deviations for link cost errors. Defaults to 1 in each case.
Niter	Number of iterations when computing probabilities by simulation. Defaults to 1000.

Value

Vector of route choice probabilities

Examples

A <- diag(2)
ODpair <- c(1,1)
u <- c(15,17)
LogitPathProb(u,ODpair,A,theta=1)

MartinLHazelton/transportation documentation built on Aug. 5, 2023, 10:28 a.m.