Robust estimation of crosscovariance function in the presence of outliers for large sample series

2016 ◽  
Vol 11 (3) ◽  
pp. 213-220
Author(s):  
D.K. Shangodoyin ◽  
R. Arnab
Entropy ◽  
2019 ◽  
Vol 21 (4) ◽  
pp. 348 ◽  
Author(s):  
Lei Li ◽  
Anand Vidyashankar ◽  
Guoqing Diao ◽  
Ejaz Ahmed

Big data and streaming data are encountered in a variety of contemporary applications in business and industry. In such cases, it is common to use random projections to reduce the dimension of the data yielding compressed data. These data however possess various anomalies such as heterogeneity, outliers, and round-off errors which are hard to detect due to volume and processing challenges. This paper describes a new robust and efficient methodology, using Hellinger distance, to analyze the compressed data. Using large sample methods and numerical experiments, it is demonstrated that a routine use of robust estimation procedure is feasible. The role of double limits in understanding the efficiency and robustness is brought out, which is of independent interest.


2020 ◽  
Vol 34 (4) ◽  
pp. 456-466 ◽  
Author(s):  
Shawn E. Christ ◽  
Hayley E. Clocksin ◽  
Barbara K. Burton ◽  
Mitzie L. Grant ◽  
Susan Waisbren ◽  
...  

Author(s):  
Mietek A. Brdys ◽  
Kazimierz Duzinkiewicz ◽  
Michal Grochowski ◽  
Tomasz Rutkowski

2016 ◽  
Vol 1 (1) ◽  
pp. 105-118
Author(s):  
Anita Pugliese ◽  
Julie Ray ◽  
Neli Esipova

This paper reports the results from Gallup’s global analysis of the likelihood of first-generation migrants, second-generation migrants and the native-born to send financial help in the form of money or goods to others inside or outside their respective country of residence. The findings in this paper are based on more than 450,000 interviews conducted through Gallup’s World Poll in 157 countries in 2012, 2013 and 2014. The sample includes more than 26,000 first-generation migrants and more than 20,000 second-generation migrants. The large sample enables Gallup to analyze first-generation migrants by the duration of their stay in their adopted country and compare their remittance behaviors with second-generation migrants and the native-born.


Sign in / Sign up

Export Citation Format

Share Document