@article{ref1,
title="Gravity models for dynamic transport planning: Development and implementation in urban networks",
journal="Journal of transport geography",
year="2006",
author="Tsekeris, Theodore and Stathopoulos, Antony",
volume="14",
number="2",
pages="152-160",
abstract="This paper describes the development and comparison through a real-life implementation of dynamic extensions of the entropy-based gravity model of trip distribution for dynamic transport planning purposes in urban networks. The single dynamic gravity model (SDGM) accounts only for the inter-period (long-term) evolution of travel demand. The doubly dynamic gravity model (DDGM) takes into account both the inter-period and intra-period (short-term or within-day) evolution of travel demand. The computational analysis and explanation of the differences between the two models are demonstrated in relation to different demand inputs, model parameters and performance measures.<p />",
language="",
issn="0966-6923",
doi="10.1016/j.jtrangeo.2005.06.009",
url="http://dx.doi.org/10.1016/j.jtrangeo.2005.06.009"
}