The naive Bayes approach is one of the most popular methods used for classification. Nevertheless, how to test its statistical significance under an ultra-high-dimensional (UHD) setup is not well understood. To fill this important theoretical gap, we propose a novel testing statistic with a...

Document classification is an area of great importance for which many classification methods have been well developed. However, most of these methods cannot generate time-dependent classification rules. Thus, they are not the best choices for problems with time-varying structures. To address...

The impact of time allocation on the economy and society has spatial characteristics, especially spatial allocation of leisure time (SALT). To explain the decision-making mechanism of SALT, we divide time from the perspective of space and construct the individual utility function to transform...