A new multivariate concept of quantile, based on a directional version of Koenker and Bassett's traditional regression quantiles, is introduced for multivariate location and multiple-output regression ...

Troy Segal is an editor and writer. She has 20+ years of experience covering personal finance, wealth management, and business news. David is comprehensively experienced in many facets of financial ...

Differential equation (DE) models are widely used in many scientific fields, including engineering, physics, and biomedical sciences. The so-called "forward problem," the problem of simulations and ...