For nonnegative measurements such as income or sick days, zero counts often have special status. Furthermore, the incidence of zero counts is often greater than expected for the Poisson model. This article considers a doubly semiparametric zero-inflated Poisson model to fit data of this type,...

Applicability of Pearson's correlation as a measure of explained variance is by now well understood. One of its limitations is that it does not account for asymmetry in explained variance. Aiming to develop broad applicable correlation measures, we study a pair of generalized measures of...

To analyze the isotonic regression problem for normal means, it is usual to assume that all variances are known or unknown but equal. This paper then studies this problem in the case that there are no conditions imposed on the variances. Suppose that we have data drawn fromkindependent normal...

For a p-dimensional normal distribution with mean vector [theta] and covariance matrix Ip, it is known that the maximum likelihood estimator [theta] of [theta] with p[greater-or-equal, slanted]3 is inadmissible under the squared loss. The present paper considers possible extensions of the result...

In medical, biological and social science, three dimensional contingency tables with ordered categories usually arise and one expects a monotone association yet one may prefer not to assume a particular parametric model. One of its key roles is how to estimate its parameters under monotonic...

Rockburst is an important accident scenario in deep underground engineering. Because there are numerous, complicated factors that lead to rockbursts, their forecasting is a difficult task, which, based on an engineering analogy and geological analysis, requires the use of clustering methods in...

Building management ought to be of paramount importance to sustainable development. It slows down a buildingís depreciation rate, delays redevelopment needs, and reduces construction waste. Despite various benefits brought about by building management, apartment owners are, in general, not...