Local Dimension-Reduced Dynamical Spatio-Temporal Models for Resting State Network Estimation

Author(s):  
Gilson Vieira ◽  
Edson Amaro ◽  
Luiz A. Baccalá
NeuroImage ◽  
2013 ◽  
Vol 82 ◽  
pp. 616-633 ◽  
Author(s):  
Carl D. Hacker ◽  
Timothy O. Laumann ◽  
Nicholas P. Szrama ◽  
Antonello Baldassarre ◽  
Abraham Z. Snyder ◽  
...  

2021 ◽  
Vol 10 (3) ◽  
pp. 188
Author(s):  
Cyril Carré ◽  
Younes Hamdani

Over the last decade, innovative computer technologies and the multiplication of geospatial data acquisition solutions have transformed the geographic information systems (GIS) landscape and opened up new opportunities to close the gap between GIS and the dynamics of geographic phenomena. There is a demand to further develop spatio-temporal conceptual models to comprehensively represent the nature of the evolution of geographic objects. The latter involves a set of considerations like those related to managing changes and object identities, modeling possible causal relations, and integrating multiple interpretations. While conventional literature generally presents these concepts separately and rarely approaches them from a holistic perspective, they are in fact interrelated. Therefore, we believe that the semantics of modeling would be improved by considering these concepts jointly. In this work, we propose to represent these interrelationships in the form of a hierarchical pyramidal framework and to further explore this set of concepts. The objective of this framework is to provide a guideline to orient the design of future generations of GIS data models, enabling them to achieve a better representation of available spatio-temporal data. In addition, this framework aims at providing keys for a new interpretation and classification of spatio-temporal conceptual models. This work can be beneficial for researchers, students, and developers interested in advanced spatio-temporal modeling.


2019 ◽  
Vol 20 (4) ◽  
pp. 386-409
Author(s):  
Elmar Spiegel ◽  
Thomas Kneib ◽  
Fabian Otto-Sobotka

Spatio-temporal models are becoming increasingly popular in recent regression research. However, they usually rely on the assumption of a specific parametric distribution for the response and/or homoscedastic error terms. In this article, we propose to apply semiparametric expectile regression to model spatio-temporal effects beyond the mean. Besides the removal of the assumption of a specific distribution and homoscedasticity, with expectile regression the whole distribution of the response can be estimated. For the use of expectiles, we interpret them as weighted means and estimate them by established tools of (penalized) least squares regression. The spatio-temporal effect is set up as an interaction between time and space either based on trivariate tensor product P-splines or the tensor product of a Gaussian Markov random field and a univariate P-spline. Importantly, the model can easily be split up into main effects and interactions to facilitate interpretation. The method is presented along the analysis of spatio-temporal variation of temperatures in Germany from 1980 to 2014.


2015 ◽  
Author(s):  
Jorge Rudas ◽  
Darwin Martínez ◽  
Javier Guaje ◽  
Athena Demertzi ◽  
Lizette Heine ◽  
...  

2015 ◽  
Vol 57 (3) ◽  
pp. 325-345 ◽  
Author(s):  
Su Yun Kang ◽  
James McGree ◽  
Peter Baade ◽  
Kerrie Mengersen

2009 ◽  
Vol 5 (4S_Part_1) ◽  
pp. P27-P28
Author(s):  
Katell Mevel ◽  
Brigitte Landeau ◽  
Florence Mézenge ◽  
Nicolas Villain ◽  
Marine Fouquet ◽  
...  

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