Judy | Raj |Robert

Geographical ProfilingFighting Crime with

Mathematics

Remember 1C or Physics 4A Ballistics?

We know the role of calculus in this realm

Lets work backwards!

Who shot at me?

A clip from Numb3rs

Pilot – Scene from Numb3rs

Geographical profiling

i and j are the rows and columns of a map, respectivelyn is the number of the crime (1= first crime, 2 = second

crime...)c is the total number of crimesB represents the size of the buffer zonek is a constantPhi, f, and g is determined by checking against past crime data

The math behind the magic

The probability of crime locations decreases as the distance from the hot zone increases (inversely proportional),  shown by first fraction

Second fraction is the difference between the buffer zone and the locations of the crimes

The math behind the magic

Mid 90’s developed as a grad student at SFU

Now used to profileHuman Attack patterns

Hunting patterns of Great White Sharks

Computer Application – Rigelgeographicprofiling.com

Kim rossmo

http://www.geographicprofiling.com/geopro/krossmo.pdf

wikipedia.org/wiki/Geographic_profiling

Hi, I’m TV’s David Krumholtz. Want more examples of math’s role in solving crimes? Check

out my hit television show Numb3rs!

Can I haz moneys plox?