Error Detection in Ocean Data Considering Spatial Autocorrelation
نویسندگان
چکیده
منابع مشابه
Considering Autocorrelation in Predictive Models
Most machine learning, data mining and statistical methods rely on the assumption that the analyzed data points are independent and identically distributed (i.i.d.). More specifically, the individual examples included in the training data are assumed to be drawn independently from each other from the same probability distribution. However, cases where this assumption is violated can be easily f...
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Consider a linear model for a spatial system of n areal units, (1) , ~ (0,) Y X u u N V where both and V are unknown. The simplest procedure for specifying the covariance matrix, V , is to start by assuming that (2) 2 n V I , so that can be estimated by OLS. Given this estimate, one can then test to see whether there is sufficient spatial autocorrelation in the residuals to warran...
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Surface climate data undergo processing to remove non-climatic effects such as urbanization and measurement irregularities. Some studies have shown that the processing is inadequate, leaving a residual warm bias. This has been disputed on three grounds: spatial autocorrelation of the 2 temperature field undermines significance of test results; counterfactual experiments using model-generated da...
متن کاملTESTING FOR AUTOCORRELATION IN UNEQUALLY REPLICATED FUNCTIONAL MEASUREMENT ERROR MODELS
In the ordinary linear models, regressing the residuals against lagged values has been suggested as an approach to test the hypothesis of zero autocorrelation among residuals. In this paper we extend these results to the both equally and unequally replicated functionally measurement error models. We consider the equally and unequally replicated cases separately, because in the first case the re...
متن کاملSpatial Autocorrelation
Glossary AutoA prefix literally meaning self; spatial autocorrelation means self-correlation, or values within a given variable are correlated, resulting in the variable being correlated with itself. Correlation A description of the nature and degree of a relationship between a pair of quantitative variables. Geary Ratio An index of spatial autocorrelation, involving the computation of squared ...
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ژورنال
عنوان ژورنال: Transactions of the Japanese Society for Artificial Intelligence
سال: 2018
ISSN: 1346-0714,1346-8030
DOI: 10.1527/tjsai.d-sgai02