2010 GLSSODaGeneralizedLocalStatisti

• (Chen et al., 2010) ⇒ Feng Chen, Chang-Tien Lu, and Arnold P. Boedihardjo. (2010). “GLS-SOD: A Generalized Local Statistical Approach for Spatial Outlier Detection.” In: Proceedings of the 16th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD-2010). doi:10.1145/1835804.1835939

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Cited By

• http://scholar.google.com/scholar?q=%22GLS-SOD%3A+a+generalized+local+statistical+approach+for+spatial+outlier+detection%22+2010
• http://portal.acm.org/citation.cfm?id=1835939&preflayout=flat#citedby

Quotes

Abstract

Local based approach is a major category of methods for spatial outlier detection (SOD). Currently, there is a lack of systematic analysis on the statistical properties of this framework. For example, most methods assume identical and independent normal distributions (i.i.d. normal) for the calculated local differences, but no justifications for this critical assumption have been presented. The methods' detection performance on geostatistic data with linear or nonlinear trend is also not well studied. In addition, there is a lack of theoretical connections and empirical comparisons between local and global based SOD approaches. This paper discusses all these fundamental issues under the proposed Generalized Local Statistical (GLS) framework. Furthermore, robust estimation and outlier detection methods are designed for the new GLS model. Extensive simulations demonstrated that the SOD method based on the GLS model significantly outperformed all existing approaches when the spatial data exhibits a linear or nonlinear trend.

References

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	Author	volume	Date Value	title	type	journal	titleUrl	doi	note	year
2010 GLSSODaGeneralizedLocalStatisti	Feng Chen Chang-Tien Lu Arnold P. Boedihardjo			GLS-SOD: A Generalized Local Statistical Approach for Spatial Outlier Detection		KDD-2010 Proceedings		10.1145/1835804.1835939		2010