A New Method of Modeling Spatio-temporal Sequence by Considering Spatial Scale Characteristics

DENG Min; CHEN Ti; YANG Wentao

doi:10.13203/j.whugis20130842

Volume 40 Issue 12

Dec. 2015

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Geomatics and Information Science of Wuhan University > 2015 > 40(12): 1625-1632. > DOI: 10.13203/j.whugis20130842

DENG Min, CHEN Ti, YANG Wentao. A New Method of Modeling Spatio-temporal Sequence by Considering Spatial Scale Characteristics[J]. Geomatics and Information Science of Wuhan University, 2015, 40(12): 1625-1632. DOI: 10.13203/j.whugis20130842

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A New Method of Modeling Spatio-temporal Sequence by Considering Spatial Scale Characteristics

School of Geosciences and Info-Physics, Central South University, Changsha 410083, China

Funds: The National High Technology Research and Development Program of China (863 Program), No. 2013AA122301; Hunan Province Science Fund for Distinguished Young Scholars, No.14JJ1007; Hunan Provincial Innovation Foundation for Postgraduate, No. CX2014B051.

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Received Date: May 03, 2015
Published Date: December 04, 2015

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Abstract

Abstract

The paper presents a new method of modeling spatio-temporal sequence data by considering spatial scale characteristics, where original data is regarded as the combination of a general trend term representing at a larger scale and a local bias term representing at a smaller scale. The original data is first converted into a larger-scale data that represents the general trend of original data. Then, this general trend term is removed and the left part is the bias term of original data. Finally, prediction models of the trend term and the bias term are respectively built, and the combination of the two models is used to predict the original spatio-temporal sequence. Application in annual precipitation and daily average of PM2.5 concentration shows that this proposed method can be used to obtain multi-scale spatial predictions, and is better in accuracy than those models without consideration of spatial scale characteristics.
- spatial scale,
- spatio-temporal sequence,
- prediction model,
- time sequence

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A New Method of Modeling Spatio-temporal Sequence by Considering Spatial Scale Characteristics

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