Mitchell Grant is a self-taught investor with over 5 years of experience as a financial trader. He is a financial content strategist and creative content editor. Timothy Li is a consultant, accountant ...

Nonparametric estimation and U-statistics have emerged as vital tools in modern statistical analysis, offering robust alternatives to traditional parametric methods. Nonparametric techniques bypass ...

In this paper, we propose a simple nonparametric test for testing the null hypothesis of constant coefficients against nonparametric smooth coefficients in a semiparametric varying coefficient model ...

The Annals of Statistics, Vol. 48, No. 3 (June 2020), pp. 1383-1408 (26 pages) The problem of determining a periodic Lipschitz vector field b = (b₁, . . . , bd) from an observed trajectory of the ...