Results 41 to 50 of about 61,880 (163)
Non-Stationarity Detection in Natural Images [PDF]
2007 IEEE International Conference on Image Processing, 2007 We present a novel approach for non-stationarity detection in natural images by exploiting the prior knowledge of the independent component structure of scene statistics. Our proposed non-stationarity index is conceptually simple and is intertwined with the probabilistic structure of the image segment being analyzed.
Raghu G. Raj +2 more
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A Statistical Method to Model Non‐stationarity in Precipitation Records Changes
Geophysical Research LettersIn the context of climate change, assessing how likely a particular change or event was caused by human influence is important for mitigation and adaptation policies.
Paula Gonzalez +3 more
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Detecting long-range dependence in non-stationary time series
, 2016 An important problem in time series analysis is the discrimination between non-stationarity and longrange dependence. Most of the literature considers the problem of testing specific parametric hypotheses of non-stationarity (such as a change in the mean)
Dette, Holger +2 more
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Stationarity, non-stationarity and early warning signals in economic networks [PDF]
, 2014 Economic integration, globalization and financial crises represent examples of processes whose understanding requires the analysis of the underlying network structure.
Garlaschelli, Diego, Squartini, Tiziano
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Modifications to a rainfall-streamflow model to handle "non-stationarity" [PDF]
Proceedings of the International Association of Hydrological Sciences, 2015 This paper explores the variation in hydrological response (often termed as non-stationarity, though this is not necessarily the correct use in the statistical meaning of this term) through time for the Bani catchment in Africa (mostly located in Mali)
B. F. W. Croke +3 more
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Estimating flood recurrence uncertainty for non-stationary regimes
Revista Brasileira de Recursos Hídricos, 2023 Assuming non-stationarity in flood frequency models is still controversial due to uncertainty in estimates. In this study, a hierarchical Bayesian framework for flood frequency analysis is presented without assuming the stationarity hypothesis.
Yan Ranny Machado Gomes +2 more
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On the Uniqueness of the Fock Quantization of the Dirac Field in the Closed FRW Cosmology [PDF]
, 2018 The Fock quantization of free fields propagating in cosmological backgrounds is in general not unambiguously defined due to the non-stationarity of the spacetime.
Cortez, Jerónimo +3 more
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Modeling and Predicting Time Series with Non-stationarity and Volatility [PDF]
Jisuanji kexue yu tansuoThe difficulty of time series prediction lies in how to handle non-stationarity and volatility. When dealing with non-stationarity, existing deep learning models adopt a method of stabilizing the input sequences before training, which has problems of ...
FENG Qiang, ZHAO Jianguang, YANG Rong, NIU Baoning
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Beyond Scale-by-Scale Equilibrium
Atmosphere, 2023 Homogeneous turbulence and turbulence in scale-by-scale equilibrium, played a leading role in the turbulence research of the second half of the twentieth century, and Jack Herring was an important contributor to these developments.
John C. Vassilicos
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Impact of non-stationarity on estimating and modeling empirical copulas of daily stock returns
, 2015 All too often measuring statistical dependencies between financial time series is reduced to a linear correlation coefficient. However this may not capture all facets of reality.
Schäfer, Rudi, Wollschläger, Marcel
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