Measuring urban dynamics in port-cities using an agent-based cellular automata land-use and transport interaction model
Measuring urban dynamics in port-cities using an agent-based cellular automata land-use and transport interaction model
The urban environment is a complex system where general urban morphology patterns emerge from the local interactions of many agents. Examination on these interactions are crucial to enable successful transport and urban planning. While cellular automata (CA) models are suitable for modelling this self-organisation behaviour, measuring individual interactions from empirical data is still complicated due to their auto-correlation and to path-dependence in urban systems evolution. Due to this, manual methods are more often used in the calibration of urban land-use and transport interaction (LUTI) models based on CA, limiting the results to a few explored settlements. This paper therefore presents a method for applying the gradient-descent algorithm with momentum to calibrate an agent-based LUTI-CA model by representing the model as an optimisation problem. This process allowed efficient calibration for 46 port-related settlements and 10 non-port settlements across Great Britain, enabling cross-sectional analysis of whether observed relationships are unique to a study area due to its path-dependence, or if they have similarities with results from other study areas.
We found unique characteristics of urban dynamics separating port from non-port settlements in smaller urban systems, while the distinctions between the two groups were less prominent in larger settlements. However, there were variations in urban dynamics between larger settlements with respect to the effects of their services and manufacturing activities on other land-uses. The automated calibration of agent-based urban CA models in this paper enabled the quantification of these urban dynamics in multiple settlements, providing the ability to look beyond the uniqueness of individual case studies to find general patterns of interaction. This paper therefore provides improvement in the calibration of LUTI models based on CA and contributes to the better understanding of the dynamics between port and urban systems.
Nugraha, Aditya Tafta
df33fa16-daeb-4d68-bd65-c26cda240a5b
Waterson, Ben
60a59616-54f7-4c31-920d-975583953286
Blainey, Simon
ee6198e5-1f89-4f9b-be8e-52cc10e8b3bb
Nash, Frederick, James
063327dc-829e-4abf-a47d-71e9ff2a9b00
February 2021
Nugraha, Aditya Tafta
df33fa16-daeb-4d68-bd65-c26cda240a5b
Waterson, Ben
60a59616-54f7-4c31-920d-975583953286
Blainey, Simon
ee6198e5-1f89-4f9b-be8e-52cc10e8b3bb
Nash, Frederick, James
063327dc-829e-4abf-a47d-71e9ff2a9b00
Nugraha, Aditya Tafta, Waterson, Ben, Blainey, Simon and Nash, Frederick, James
(2021)
Measuring urban dynamics in port-cities using an agent-based cellular automata land-use and transport interaction model.
In hEART 2020 : 9th Symposium of the European Association for Research in Transportation.
13 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
The urban environment is a complex system where general urban morphology patterns emerge from the local interactions of many agents. Examination on these interactions are crucial to enable successful transport and urban planning. While cellular automata (CA) models are suitable for modelling this self-organisation behaviour, measuring individual interactions from empirical data is still complicated due to their auto-correlation and to path-dependence in urban systems evolution. Due to this, manual methods are more often used in the calibration of urban land-use and transport interaction (LUTI) models based on CA, limiting the results to a few explored settlements. This paper therefore presents a method for applying the gradient-descent algorithm with momentum to calibrate an agent-based LUTI-CA model by representing the model as an optimisation problem. This process allowed efficient calibration for 46 port-related settlements and 10 non-port settlements across Great Britain, enabling cross-sectional analysis of whether observed relationships are unique to a study area due to its path-dependence, or if they have similarities with results from other study areas.
We found unique characteristics of urban dynamics separating port from non-port settlements in smaller urban systems, while the distinctions between the two groups were less prominent in larger settlements. However, there were variations in urban dynamics between larger settlements with respect to the effects of their services and manufacturing activities on other land-uses. The automated calibration of agent-based urban CA models in this paper enabled the quantification of these urban dynamics in multiple settlements, providing the ability to look beyond the uniqueness of individual case studies to find general patterns of interaction. This paper therefore provides improvement in the calibration of LUTI models based on CA and contributes to the better understanding of the dynamics between port and urban systems.
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Published date: February 2021
Venue - Dates:
9th Symposium of the European Association for Research in Transportation, Virtual, Lyon, France, 2021-02-03
Identifiers
Local EPrints ID: 452252
URI: http://eprints.soton.ac.uk/id/eprint/452252
PURE UUID: 77959237-9425-4a48-af87-fba1bc516cf1
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Date deposited: 02 Dec 2021 17:31
Last modified: 17 Mar 2024 03:15
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Contributors
Author:
Aditya Tafta Nugraha
Author:
Frederick, James Nash
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