Sampling strategies and square root analysis schemes for the EnKF

2004 ◽  
Vol 54 (6) ◽  
pp. 539-560 ◽  
Author(s):  
Geir Evensen
Keyword(s):  
Square Root ◽  
Sampling Strategies ◽  
Root Analysis

Square Root Analysis schemes

2009 ◽  
pp. 197-209
Author(s):  
Geir Evensen
Keyword(s):  
Square Root ◽  
Root Analysis

scholarly journals Oracle inequalities for square root analysis estimators with application to total variation penalties

2020 ◽  
Author(s):  
Francesco Ortelli ◽  
Sara van de Geer
Keyword(s):  
Total Variation ◽  
Square Root ◽  
Oracle Inequality ◽  
Oracle Inequalities ◽  
Direct Study ◽  
Root Analysis ◽  
Cycle Graph

Abstract Through the direct study of the analysis estimator we derive oracle inequalities with fast and slow rates by adapting the arguments involving projections by Dalalyan et al. (2017, Bernoulli, 23, 552–581). We then extend the theory to the square root analysis estimator. Finally, we focus on (square root) total variation regularized estimators on graphs and obtain constant-friendly rates, which, up to log terms, match previous results obtained by entropy calculations. We also obtain an oracle inequality for the (square root) total variation regularized estimator over the cycle graph.

Who owns a personal home page?

2003 ◽  
Vol 62 (2) ◽  
pp. 121-129 ◽  
Author(s):  
Astrid Schütz ◽  
Franz Machilek
Keyword(s):  
Search Engine ◽  
Home Page ◽  
Sampling Strategies ◽  
Home Pages ◽  
Personal Home Pages ◽  
Age And Sex

Research on personal home pages is still rare. Many studies to date are exploratory, and the problem of drawing a sample that reflects the variety of existing home pages has not yet been solved. The present paper discusses sampling strategies and suggests a strategy based on the results retrieved by a search engine. This approach is used to draw a sample of 229 personal home pages that portray private identities. Findings on age and sex of the owners and elements characterizing the sites are reported.

About the Complexity of Square Root Extraction Algorithms in Finite Fields and Residue Rings

Vestnik MEI ◽  
2018 ◽  
Vol 5 (5) ◽  
pp. 79-88
Author(s):  
Sergey B. Gashkov ◽  
◽  
Aleksandr B. Frolov ◽  
Elizaveta Р. Popova ◽  
◽  
...  
Keyword(s):  
Finite Fields ◽  
Square Root ◽  
Root Extraction
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