Showing 1 - 10 of 12
In this paper we present a parallel regret insertion heuristic to solve a dial-a-ride problem with time windows. A new route initialization procedure is implemented, that keeps into account both the spatial and the temporal aspects of the problem, and a regret insertion is then performed to...
Persistent link: https://www.econbiz.de/10005279676
We study the problem of determining the number of vehicles needed to provide a demand responsive transit service with a predetermined quality for the user in terms of waiting time at the stops and maximum allowed detour. We propose a probabilistic model that requires only the knowledge of the...
Persistent link: https://www.econbiz.de/10005279949
The growing popularity of mixed logit to obtain estimates of willingness to pay (WTP) has focussed on the distribution of the random parameters and the possibility of estimating deep parameters to account for heterogeneity around the mean of the distribution. However the possibility exists to...
Persistent link: https://www.econbiz.de/10005115099
Random coefficient logit (RCL) models containing random parameters are increasingly used for modelling travel choices. Willingness-to-pay (WTP) measures, such as the value of travel time savings (VTTS) are, in the case of RCL models estimated in preference space, ratios of random parameters. In...
Persistent link: https://www.econbiz.de/10010730398
Partly as a result of the increasing reliance on Stated Choice (SC) data, the vast majority of discrete choice modelling applications are now estimated on data containing multiple observations for each respondent. At the same time there has been growing interest in the representation of...
Persistent link: https://www.econbiz.de/10005022880
In each stated choice (SC) survey, there is an underlying experimental design from which the hypothetical choice situations are determined. These designs are constructed by the analyst, with several different ways of constructing these designs having been proposed in the past. Recently, there...
Persistent link: https://www.econbiz.de/10008488160
Persistent link: https://www.econbiz.de/10008488164
In designing an approach to parameterise the preferences of agents in a distribution chain for retail goods, Hensher and Puckett [Hensher, D.A., Puckett, S.M., 2007. Theoretical and conceptual frameworks for studying agent interaction and choice revelation in transportation studies....
Persistent link: https://www.econbiz.de/10005227992
This paper examines various design strategies that might be employed to construct statistically more efficient stated choice designs in the presence of a reference alternative in a choice set. Using data collected in Sydney in 2004 in the context of trading time and cost attributes associated...
Persistent link: https://www.econbiz.de/10005228000
The allocation of combinations of attribute levels to choice situations in stated choice (SC) experiments can have a significant influence upon the resulting study outputs once data is collected. Recently, a small but growing stream of research has looked at using what have become known as...
Persistent link: https://www.econbiz.de/10005279817