Existing studies on covariance estimation generally assume that the future covariance matrix must be estimated based only on the limited history of a given set of portfolio constituents. In this study, we propose a new perspective on how to estimate the covariance matrix. We present a purely...

Grid technologies and the related concepts of utility computing and cloud computing enable the dynamic sourcing of computer resources and services, thus allowing enterprises to cut down on hardware and software expenses and to focus on key competencies and processes. Resources are shared across...

In the last century, the costs of powering datacenters have increased so quickly, that datacenter power bills now dwarf the IT hardware bills. Many large infrastructure programs have been developed in the past few years to reduce the energy consumption of datacenters, especially with respect to...