GIS technology helps map out how America’s mafia networks were ‘connected’

A team of researchers used geographic information systems — a collection of tools for geographic mapping and analysis of the Earth and society — and data from a government database on mafia ties during the 1960s, to examine how these networks were built, maintained and grown. The researchers said that this spatial social networks study offers a unique look at the mafia’s loosely affiliated criminal groups. Often called families, these groups were connected — internally and externally — to maintain a balance between security and effectiveness, referred to as the efficiency-security tradeoff.