WIT Press


Dynamic Approaches To Demand Model In Evacuation Conditions

Price

Free (open access)

Paper DOI

10.2495/UT100271

Volume

111

Pages

10

Page Range

303 - 312

Published

2010

Size

211 kb

Author(s)

F. Russo & G. Chilà

Abstract

Simulation of evacuation demand in some emergency conditions requires the use of dynamic models, among which sequential dynamic discrete choice models represent a special class. Sequential dynamic discrete choice models are based on discrete choice model theory and on sequential analysis, a statistical approach which allows one to analyze the given dynamic phenomenon in the sample database and to highlight, if it exists, a specific lag. This work is subdivided into two main parts. In the first part we propose an analysis of evacuation conditions requiring a dynamic approach and a state of the art of literature models which deal with these. In the second part we propose a brief description of sequential analysis and we introduce a sequential dynamic discrete choice model to simulate evacuation conditions. Keywords: evacuation conditions, sequential dynamic demand model. 1 Introduction Demand models are a fundamental tool for solving most problems in transport systems planning and management. Several mathematical models to simulate transport demand are proposed in the literature. These are based on various assumptions and can be subdivided in relation to different elements: type of choice implicitly or explicitly simulated by the model; approach taken for simulating travel demand, i.e. the reciprocal conditioning of decisions; basic assumptions of the models, which can be behavioural if they derive from explicit assumptions about user choice behaviour, or descriptive otherwise. In most cases, these models belong to discrete choice models, which are defined in

Keywords

evacuation conditions, sequential dynamic demand model