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Int. J. Environ. Res. Public Health 2018, 15(2), 186; https://doi.org/10.3390/ijerph15020186

Study on Urban Heat Island Intensity Level Identification Based on an Improved Restricted Boltzmann Machine

1
College of Urban Economics and Public Administration, Capital University of Economics and Business, Beijing 100070, China
2
College of Resources and Environmental Science, Wuhan University, Wuhan 430079, China
3
State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan 430079, China
4
College of Public Administration, Guangxi University, Nanning 530004, China
*
Author to whom correspondence should be addressed.
Received: 5 December 2017 / Revised: 15 January 2018 / Accepted: 16 January 2018 / Published: 23 January 2018
(This article belongs to the Section Environmental Science and Engineering)
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Abstract

Thermal infrared remote sensing has become one of the main technology methods used for urban heat island research. When applying urban land surface temperature inversion of the thermal infrared band, problems with intensity level division arise because the method is subjective. However, this method is one of the few that performs heat island intensity level identification. This paper will build an intensity level identifier for an urban heat island, by using weak supervision and thought-based learning in an improved, restricted Boltzmann machine (RBM) model. The identifier automatically initializes the annotation and optimizes the model parameters sequentially until the target identifier is completed. The algorithm needs very little information about the weak labeling of the target training sample and generates an urban heat island intensity spatial distribution map. This study can provide reliable decision-making support for urban ecological planning and effective protection of urban ecological security. The experimental results showed the following: (1) The heat island effect in Wuhan is existent and intense. Heat island areas are widely distributed. The largest heat island area is in Wuhan, followed by the sub-green island. The total area encompassed by heat island and strong island levels accounts for 54.16% of the land in Wuhan. (2) Partially based on improved RBM identification, this method meets the research demands of determining the spatial distribution characteristics of the internal heat island effect; its identification accuracy is superior to that of comparable methods. View Full-Text
Keywords: improved restricted Boltzmann machine; urban heat island; intensity level identification; green island; Wuhan; China improved restricted Boltzmann machine; urban heat island; intensity level identification; green island; Wuhan; China
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Zhang, Y.; Jiang, P.; Zhang, H.; Cheng, P. Study on Urban Heat Island Intensity Level Identification Based on an Improved Restricted Boltzmann Machine. Int. J. Environ. Res. Public Health 2018, 15, 186.

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