We first consider the random censorship model of survival analysis. The pairs of positive random variables ($X sb{i},Y sb{i}$), i = 1,$ ...$,n, are independent and identically distributed, with distribution functions F(t) = P($X sb{i} leq t$) and G(t) = P($Y sb{i} leq t$) and the Y's are...

Purpose: The purpose of this paper is to examine merchandise performance-based financial productivity of offshore vs reshore sourcing scenarios for fashion/seasonal products with higher demand uncertainty, using computer simulation software. Design/methodology/approach: Using Sourcing...

We consider the accuracy estimation of a classifier constructed on a given training sample. The naive resubstitution estimate is known to have a downward bias problem. The traditional approach to tackling this bias problem is cross-validation. The bootstrap is another way to bring down the high...

One hundred years ago Karl Pearson derived an approximate formula for the correlation between ratios with a common divisor and cautioned to be wary of correlating ratios. The exact formula for the correlation between ratios is derived. It can provide a better reference point of no connection...