RT - Journal Article T1 - Evaluation of Tests for Separability and Symmetry of Spatio-temporal Covariance Function JF - srtc-jsri YR - 2011 JO - srtc-jsri VO - 8 IS - 1 UR - http://jsri.srtc.ac.ir/article-1-82-en.html SP - 1 EP - 27 K1 - Spatio-temporal data K1 - stationarity K1 - symmetry K1 - stationary K1 - separability AB - In recent years, some investigations have been carried out to examine the assumptions like stationarity, symmetry and separability of spatio-temporal covariance function which would considerably simplify fitting a valid covariance model to the data by parametric and nonparametric methods. In this article, assuming a Gaussian random field, we consider the likelihood ratio separability test, a variety of nonparametric and spectral tests of symmetry and also separability of spatio-temporal covariance function. Comparing the tests of symmetry and separability in a level of scenarios, the best ones would be introduced. LA eng UL http://jsri.srtc.ac.ir/article-1-82-en.html M3 10.18869/acadpub.jsri.8.1.1 ER -