Crime Mapping & Analysis Program
Sean Bair, Program Manager
Crime Mapping & Analysis Program
National Law Enforcement & Corrections Technology Center
A Program of the National Institute of Justice
sbair@du.edu
1-800-416-8086
www.crimeanalysts.net
Background
•Former Crime Analyst
•Former Police Officer
•(Field Training Officer and Sexual Assault Investigator)
•Program Manager for CMAP, a program of NIJ
CMAP’s Mission
„
To Provide Technical Assistance and Training
that enhances local, state and federal law
enforcement & correctional agencies’ capacity
for
4CRIME AND INTELLIGENCE ANALYSIS
4GEOGRAPHIC INFORMATION SYSTEMS (GIS)
4CRIME MAPPING
4AUTOMATED VEHICLE LOCATOR
4GPS ELECTRONIC HOME MONITORING
Topics
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Sequencing
Line of Positioning, Line of Bearing
Animation and 3D Analysis
Spatiotemporal Analysis
Next Event Forecasting Thesis Results
Case Study
Commercial Robberies, California
Who, What, Where, When, How and Why?
Time / Loss / Interval Analysis
Sequencing
Analysis of distances between strikes
Angle / Directional Analysis
Strike zone
Victimology / Target Analysis
Target Prioritization
Prediction / Forecast
Lopping and Lobbing
Crime scene and evidence drop locations (body, weapons, pawn, etc.)
Offender
Spatiotemporal Analysis
Study of Time in Space
(Sequencing, Animation, T-Coordinates)
Each officer’s calls
are sequenced
and color coded.
Now the amount of
time they spend on
each call is
extrapolated in 3d
to show call
location, duration,
sequence and
direction.
Animation
Survey Results
Question: “Which of these techniques do you
think offers the most accurate prediction?”
Most Accurate Technique
Ellipses
7%
Kernel
Smoothing
7%
Visual Approx
7%
Skipped
Question
23%
Combination
9%
Other
T echniques
21%
Rectangles
9%
"I don't know"
17%
Standard Deviation Rectangles
Standard Deviation Ellipse
Kernel Smoothing
Minimum Convex Polygon
Space-Time Analysis
Crime Mapping & Analysis Program
Sean Bair, Program Manager
Crime Mapping & Analysis Program
National Law Enforcement & Corrections Technology Center
A Program of the National Institute of Justice
sbair@du.edu
1-800-416-8086
www.crimeanalysts.net