The Wilcoxon rank-sum test is a popular nonparametric test for comparing two independent populations (groups). In recent years, there have been renewed attempts in extending the Wilcoxon rank sum test ...

We present a simple sample-size formula for weighted log-rank statistics applied to clustered survival data with variable cluster sizes and arbitrary treatment assignments within clusters. This ...

Big data and cloud infrastructure is creating an innovation boom and massive business opportunity. Anytime a market is going under radical reformation there is an opportunity for any company to “move ...

If you limit your analysis of the cloud DW space just to the MS-AWS lobe, you'll miss some important breakthroughs in the market. For example, Microsoft distinguishes its Azure SQL Data Warehouse from ...

Sometimes, a startup takes such a new and profound approach to a problem that it is hard to know where to begin to describe how radical of a change that company has made in developing its product. So ...