Not surprisingly, early generation predictive coding tools are far more complex and difficult to use than traditional legal technology tools such as keyword search, concept search, email threading, and data clustering to name a few.

FORBES: Guest Post by Matthew Nelson

In July, astronomers from the Sloan Digital Sky Survey (SDSS), which aims to map out a million galaxies, published a research paper in which they superimposed their own galaxy-clustering data on Wmap's microwave data.

BBC: NEWS | Science/Nature | Dark energy tops science class

For this reason, Dr Roberts used a technique called clustering, which has been employed extensively in other situations where census data are lacking, such as studying infectious disease in poor countries.

ECONOMIST: The Iraqi war