This research examines the ability of six popular Web search engines, individually and collectively, to locate Web pages containing common marketing/management phrases. We propose and validate a model for search engine performance that is able to represent key patterns of coverage and overlap...

We prove a central limit theorem for the asymptotic joint distribution of non-linear statistics of the form [summation operator]l = 1N XNltItlIt+1,l, 1 [less-than-or-equals, slant] t [less-than-or-equals, slant] r - 1, and linear statistics of the form [summation operator]l = 1N XNltItl, 1...

This paper describes a method of estimating the size of a population based on matching the individuals from the population appearing in two or more nonrandom samples. The method has been developed by population biologists and demographers who have shown that the simple estimates based on only...