气候变化领域集成服务门户(CCPortal): Application of autoencoders artificial neural network and principal component analysis for pattern extraction and spatial regionalization of global temperature data

CCPortal

DOI	10.1088/2632-2153/ad1c34
	Application of autoencoders artificial neural network and principal component analysis for pattern extraction and spatial regionalization of global temperature data
	Ibebuchi, Chibuike Chiedozie; Obarein, Omon A.; Abu, Itohan-Osa
发表日期	2024
EISSN	2632-2153
起始页码	5
结束页码	1
卷号	5 期号:1
英文摘要	Spatial regionalization is instrumental in simplifying the spatial complexity of the climate system. To identify regions of significant climate variability, pattern extraction is often required prior to spatial regionalization with a clustering algorithm. In this study, the autoencoder (AE) artificial neural network was applied to extract the inherent patterns of global temperature data (from 1901 to 2021). Subsequently, Fuzzy C-means clustering was applied to the extracted patterns to classify the global temperature regions. Our analysis involved comparing AE-based and principal component analysis (PCA)-based clustering results to assess consistency. We determined the number of clusters by examining the average percentage decrease in Fuzzy Partition Coefficient (FPC) and its 95% confidence interval, seeking a balance between obtaining a high FPC and avoiding over-segmentation. This approach suggested that for a more general model, four clusters is reasonable. The Adjusted Rand Index between the AE-based and PCA-based clusters is 0.75, indicating that the AE-based and PCA-based clusters have considerable overlap. The observed difference between the AE-based clusters and PCA-based clusters is suggested to be associated with AE's capability to learn and extract complex non-linear patterns, and this attribute, for example, enabled the clustering algorithm to accurately detect the Himalayas region as the 'third pole' with similar temperature characteristics as the polar regions. Finally, when the analysis period is divided into two (1901-1960 and 1961-2021), the Adjusted Rand Index between the two clusters is 0.96 which suggests that historical climate change has not significantly affected the defined temperature regions over the two periods. In essence, this study indicates both AE's potential to enhance our understanding of climate variability and reveals the stability of the historical temperature regions.
英文关键词	autoencoders; principal component analysis; fuzzy C-means; temperature
语种	英语
WOS研究方向	Computer Science ; Science & Technology - Other Topics
WOS类目	Computer Science, Artificial Intelligence ; Computer Science, Interdisciplinary Applications ; Multidisciplinary Sciences
WOS记录号	WOS:001143761000001
来源期刊	MACHINE LEARNING-SCIENCE AND TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302183
作者单位	University System of Ohio; Kent State University; Kent State University Kent; Kent State University Salem; University System of Ohio; Kent State University; Kent State University Kent; Kent State University Salem; University of Wurzburg
推荐引用方式 GB/T 7714	Ibebuchi, Chibuike Chiedozie,Obarein, Omon A.,Abu, Itohan-Osa. Application of autoencoders artificial neural network and principal component analysis for pattern extraction and spatial regionalization of global temperature data[J],2024,5(1).
APA	Ibebuchi, Chibuike Chiedozie,Obarein, Omon A.,&Abu, Itohan-Osa.(2024).Application of autoencoders artificial neural network and principal component analysis for pattern extraction and spatial regionalization of global temperature data.MACHINE LEARNING-SCIENCE AND TECHNOLOGY,5(1).
MLA	Ibebuchi, Chibuike Chiedozie,et al."Application of autoencoders artificial neural network and principal component analysis for pattern extraction and spatial regionalization of global temperature data".MACHINE LEARNING-SCIENCE AND TECHNOLOGY 5.1(2024).