Author: Karen Spärck Jones
Alternate names: Karen Ida Boalth Spärck Jones; Karen Sparck Jones; Karen Jones; Jones Karen Sparck; Karen Sprack-Jones; Karen Spack-Jones; Karen I.B. Spaerck Jones; Karen I. B. Spaerck Jones
Born: 1935
Died: 2007
Bio: pioneering British computer and information scientist responsible for the concept of inverse document frequency (IDF), a technology that underlies most modern search engines