气候变化领域集成服务门户(CCPortal): Component intensities to relate difference by category with difference overall

CCPortal

DOI	10.1016/j.jag.2018.07.024
	Component intensities to relate difference by category with difference overall
	Pontius R.G.; Jr.
发表日期	2019
ISSN	15698432
起始页码	94
结束页码	99
卷号	77
英文摘要	This article gives methods to analyze the difference between two datasets that describe a mutual set of categories. The methods can analyze classification error between mapped and reference categories, or change between two time points. Previous work showed how to compute difference size as the sum of three components: Quantity, Exchange and Shift. These components exist for difference by category and for difference overall. These components can be challenging to compare when the categories’ differences vary by size. To address this challenge, this article introduces equations to compute a component's intensity, which is the size of the component divided by the size of the difference. Component intensities facilitate comparison of each category with other categories and with difference overall. The case study illustrates how to use component intensities to characterize temporal change using remotely sensed data. Results show how an intensive Exchange component can signal possible confusion of two categories with each other. The literature shows that authors could benefit from interpretation of component intensities. Readers can perform the calculations for free by using the diffeR package in R or the PontiusMatrix spreadsheet available at www.clarku.edu/∼rpontius. © 2018 Elsevier B.V.
英文关键词	Classification accuracy; Data analysis; Difference; Intensity; Landcover change; Matrix
语种	英语
scopus关键词	accuracy assessment; data set; error analysis; land cover; mapping
来源期刊	International Journal of Applied Earth Observation and Geoinformation
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156507
作者单位	School of Geography, Clark University, 950 Main Street, Worcester, MA 01610-1477, United States
推荐引用方式 GB/T 7714	Pontius R.G.,Jr.. Component intensities to relate difference by category with difference overall[J],2019,77.
APA	Pontius R.G.,&Jr..(2019).Component intensities to relate difference by category with difference overall.International Journal of Applied Earth Observation and Geoinformation,77.
MLA	Pontius R.G.,et al."Component intensities to relate difference by category with difference overall".International Journal of Applied Earth Observation and Geoinformation 77(2019).