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Evolution From CompStat to Crime 
Mapping to Predictive Policing 
1960 1970 1980 1990 2000 2012 
Professional 
Policing 
Community 
Policing 
CompStat Crime Mapping Predictive 
Policing 
This is the next era of policing. . . 
Very soon, we will be using a predictive policing model where, by studying real-time crime patterns, we 
can anticipate where a crime is likely to occur. 
—William Bratton, Commissioner of NYPD and Former Chief of LAPD & Boston PD 
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 
-- 
LAPD’s toolkit now relies heavily on predictive policing. 
— Former Mayor Antonio Villaraigosa , Los Angeles California
Predictive Policing Is: 
• Cloud software technology created by police 
in Los Angeles & Santa Cruz, CA 
• Provider of the highest risk places for future crime 
for each shift (not for the whole week or month) 
• High level mathematics combined with analysts 
and veteran officers 
www.predpol.com
PredPol Has: 
• Tested results and many deployments 
• Tools to measure your success every day, 
so that you know whether and how it’s 
impacting crime for you 
• Automated mapmaking, direct delivery to 
patrol officers, many crime types, GPS & 
mobile tools 
www.predpol.com
Outline 
Making predictive policing practical 
The science behind predictive policing 
Testing predictive policing in the field 
www.predpol.com
Policing Crime Patterns Is A Challenge 
Long-term Resource 
Allocation 
Traditional heat map showing activity 
over for a full year 
Chase Overnight 
Crime 
There are many hotspots & 
they move day to day 
www.predpol.com
Making Predictions 
Practical & More Accurate 
TACTICAL AMBIGUITY 
rear-view mirror heat map 
TACTICAL CLARITY 
forward-looking PredPol boxes 
www.predpol.com
Deployment To Officers 
In The Field 
Lists or maps of predictions in 500’ x 500’ boxes 
distributed at start of shift or on-demand 
‘get in the box’ to disrupt crime during patrols 
LAPD Deployment Santa Cruz PD Deployment 
www.predpol.com
Deployments Include 
Seattle, WA 
Atlanta, GA 
Los Angeles, CA 
Orange County, FL 
Franklin Twp., NJ 
Reading, PA 
www.predpol.com 
Miami Gardens, FL 
Elgin, IL 
Little Rock, AR 
Kent, England 
Montevideo, Uruguay
Track Record 
Initial Deployment In L.A. Saw Quick Impact 
www.predpol.com 
-12% 
L.A. Foothill Division 
Property Crime 
Nov ‘11 to May ‘12 
Source: LAPD
Track Record 
Third Year In L.A. Still Having An Effect 
-20% 
Foothill Division Property Crime 
Jan’14-June’14 
(year over year) 
Source: LAPD’s Capt. Sean Malinowski, July 2014 
www.predpol.com
Track Record 
After Deployment In Santa Cruz (pop. 61,000) 
First Full Year 
Burglaries 11% 
Robberies 8% 
Assaults 7% 
Source: Santa Cruz Deputy Chief Steve Clark, April 2014 
www.predpol.com
Track Record 
After Deployment In Norcross, GA (pop. 10,000) 
-22.7% 
“We’re down 22.7% when comparing 
10 months using PredPol to the same 
10 months before using PredPol.” 
Capt. Bill Grogan 
August 2013 – Spring 2014 
Source: Norcross Capt. Bill Grogan, June’14 
www.predpol.com
Track Record 
After Deployment In Alhambra, CA (pop. 
84,000) 
-15% 
Alhambra Property Crimes 
1st half 2012 
vs. 
1st half 2013 
www.predpol.com 
Source: Alhambra Chief Mark Yokoyama
Track Record 
After Deployment In Atlanta (pop. 440.000) 
-20% 
July 2013–April 2014 
“We pride ourselves on being a 
Department that is not satisfied with 
the status quo.” 
Chief George Turner 
Source: Atlanta Police Department via USDoJ Bureau of Justice Assistance, May 2014 
www.predpol.com
Crime Reductions Free Up Money 
That You Can Re-direct to More Analysts & Officers 
www.predpol.com 
Cost Per Crime 
L.A. Savings With 
Only 4.3 Crimes 
Per Week Prevented
Day To Day User Experience 
Access & log-in 
Set prediction options 
Set crime mapping options 
Generate prediction and crime mapping reports 
Brief patrol at morning roll-call 
Get-in-the-box 
www.predpol.com
Day to Day Use 
www.predpol.com 
www.
PredPol Offers Time & Place 
While Officers Determine Tactics 
Problem-oriented Environmental Design Community Policing 
CITY 
Micro place-based Intelligence-led Broken-windows 
www.predpol.com
What’s Behind This Technology? 
“I’m not going to get more money. I’m not going to get more cops. I have to be 
better at using what I have, and that’s what predictive policing is about” 
www.predpol.com 
Los Angeles Police Chief Charlie Beck, CBS Evening News
www.predpol.com 
Data Flow 
Police Reports -> Predictions -> Users 
Police RMS 
(database) 
User 
Geocode Algorith 
m 
Hotspot 
Ranking 
Database 
Crime report 
Victim 
PredPol Computers
www.predpol.com 
Cloud-based Service Set-up 
• Custom Java software running continuously on a 
machine within your network (analogous to 
public mapping software) to upload crime report 
info to PredPol server 
• Information is encrypted and transmitted 
securely to PredPol for analysis 
• For each crime report: address, date, time, crime 
type (no personal information required)
Other Required Information 
www.predpol.com 
• Shift schedules 
• Latitude/longitude boundaries of each 
SFPD division 
• Crime type codes used in RMS
Data 
+ 
Criminal behaviors 
+ 
Advanced 
mathematics 
= 
Highest probabilities 
of crime 
www.predpol.com
“Mathematizing” Criminal Behavior 
Repeat Victimization 
Local 
Search 
Crime Patterns Mathematical Model 
www.predpol.com 
¶A 
¶t 
= B+ 
hD 
4 
Ñ2A-w A+qwd 
Environment 
Near-repeats
Only Type Of Crime, Place Of Crime, 
And Time Of Crime Are Used 
More recent crimes given heavier weight. 
“Impersonal” data avoids profiling & privacy issues. 
www.predpol.com
How Do We Know It Works? 
Accuracy & Efficacy 
Olympic 
Southwest 
Foothill Division of 250,000 people was first 
www.predpol.com 
Foothill 
N. Hollywood 
Hollenbeck 
Harbor
Years of Testing, Proven in the Field 
Los Angeles Crime Reductions Starting in 2011 
LAPD’s Foothill Division 
First Six Months 
12% 
How do we know predictions worked in 
Los Angeles? Foothill Division was first to 
deploy & significantly outperformed 
Van Nuys 
% Change on Previous Year 
West Valley 
North Hollywood 
Foothill 
Devonshire 
Mission 
Topanga 
10% 
5% 
0% 
-5% 
-10% 
-15% 
other divisions … 
Rest of L.A. During 
Same Period 
0.4%
How Do We Know It Works? 
The Impact on Property Crime 
www.predpol.com 
Month 
-12% 
Start of LAPD rollout in Nov. 2011 
2010-2011 
2011-2012
Twice As Accurate As 
Rear View Mirror Crime Mapping 
www.predpol.com 
Predictive Policing 
Cops-on-the-dots 
Random
Los Angeles Predictive Accuracy 
3 Divisions, Single Blind Controlled Study 
www.predpol.com 
2.3x 
Hot Spot Mapping
Atlanta Phased Deployment (444,000 Pop.) 
Aggregate crime declined by 8 % and 
9% in the two zones that first 
deployed predictive policing, with 
burglary and car thefts falling 10- 
www.predpol.com 
28%. 
Source: Atlanta Police Foundation, April 2014 
-8% -9%
How Will You Know It’s Working For You? 
www.predpol.com
‘Radar’ Gives You Day To Day Tracking Of 
The Impact Of The Predictive Boxes 
• Allows you to track effectiveness of 
predictions in your jurisdiction 
• Identifies missed patrolling opportunities & 
maintains officer buy-in 
• Helps identify leading indicator crimes to 
improve predictions of your target crimes 
www.predpol.com
Radar Tells You Whether Crime Is Up Or 
Down... 
www.predpol.com
… And Radar Tracks Number of Crimes 
Occurring in Box and Perimeter Boxes. 
www.predpol.com
PredPol Has: 
www.predpol.com 
Track record of success 
(so you’re no one’s predictive policing pilot) 
Easy installation and requires no new hires & no new hardware, 
with no limit on users 
A significant economic return that will 
free up money for additional needs & personnel 
Tools to measure effectiveness every day 
(so you don’t have to rely only on successes elsewhere)
Thank You!

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PredPol: How Predictive Policing Works

  • 1.
  • 2. Evolution From CompStat to Crime Mapping to Predictive Policing 1960 1970 1980 1990 2000 2012 Professional Policing Community Policing CompStat Crime Mapping Predictive Policing This is the next era of policing. . . Very soon, we will be using a predictive policing model where, by studying real-time crime patterns, we can anticipate where a crime is likely to occur. —William Bratton, Commissioner of NYPD and Former Chief of LAPD & Boston PD ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -- LAPD’s toolkit now relies heavily on predictive policing. — Former Mayor Antonio Villaraigosa , Los Angeles California
  • 3. Predictive Policing Is: • Cloud software technology created by police in Los Angeles & Santa Cruz, CA • Provider of the highest risk places for future crime for each shift (not for the whole week or month) • High level mathematics combined with analysts and veteran officers www.predpol.com
  • 4. PredPol Has: • Tested results and many deployments • Tools to measure your success every day, so that you know whether and how it’s impacting crime for you • Automated mapmaking, direct delivery to patrol officers, many crime types, GPS & mobile tools www.predpol.com
  • 5. Outline Making predictive policing practical The science behind predictive policing Testing predictive policing in the field www.predpol.com
  • 6. Policing Crime Patterns Is A Challenge Long-term Resource Allocation Traditional heat map showing activity over for a full year Chase Overnight Crime There are many hotspots & they move day to day www.predpol.com
  • 7. Making Predictions Practical & More Accurate TACTICAL AMBIGUITY rear-view mirror heat map TACTICAL CLARITY forward-looking PredPol boxes www.predpol.com
  • 8. Deployment To Officers In The Field Lists or maps of predictions in 500’ x 500’ boxes distributed at start of shift or on-demand ‘get in the box’ to disrupt crime during patrols LAPD Deployment Santa Cruz PD Deployment www.predpol.com
  • 9. Deployments Include Seattle, WA Atlanta, GA Los Angeles, CA Orange County, FL Franklin Twp., NJ Reading, PA www.predpol.com Miami Gardens, FL Elgin, IL Little Rock, AR Kent, England Montevideo, Uruguay
  • 10. Track Record Initial Deployment In L.A. Saw Quick Impact www.predpol.com -12% L.A. Foothill Division Property Crime Nov ‘11 to May ‘12 Source: LAPD
  • 11. Track Record Third Year In L.A. Still Having An Effect -20% Foothill Division Property Crime Jan’14-June’14 (year over year) Source: LAPD’s Capt. Sean Malinowski, July 2014 www.predpol.com
  • 12. Track Record After Deployment In Santa Cruz (pop. 61,000) First Full Year Burglaries 11% Robberies 8% Assaults 7% Source: Santa Cruz Deputy Chief Steve Clark, April 2014 www.predpol.com
  • 13. Track Record After Deployment In Norcross, GA (pop. 10,000) -22.7% “We’re down 22.7% when comparing 10 months using PredPol to the same 10 months before using PredPol.” Capt. Bill Grogan August 2013 – Spring 2014 Source: Norcross Capt. Bill Grogan, June’14 www.predpol.com
  • 14. Track Record After Deployment In Alhambra, CA (pop. 84,000) -15% Alhambra Property Crimes 1st half 2012 vs. 1st half 2013 www.predpol.com Source: Alhambra Chief Mark Yokoyama
  • 15. Track Record After Deployment In Atlanta (pop. 440.000) -20% July 2013–April 2014 “We pride ourselves on being a Department that is not satisfied with the status quo.” Chief George Turner Source: Atlanta Police Department via USDoJ Bureau of Justice Assistance, May 2014 www.predpol.com
  • 16. Crime Reductions Free Up Money That You Can Re-direct to More Analysts & Officers www.predpol.com Cost Per Crime L.A. Savings With Only 4.3 Crimes Per Week Prevented
  • 17. Day To Day User Experience Access & log-in Set prediction options Set crime mapping options Generate prediction and crime mapping reports Brief patrol at morning roll-call Get-in-the-box www.predpol.com
  • 18. Day to Day Use www.predpol.com www.
  • 19. PredPol Offers Time & Place While Officers Determine Tactics Problem-oriented Environmental Design Community Policing CITY Micro place-based Intelligence-led Broken-windows www.predpol.com
  • 20. What’s Behind This Technology? “I’m not going to get more money. I’m not going to get more cops. I have to be better at using what I have, and that’s what predictive policing is about” www.predpol.com Los Angeles Police Chief Charlie Beck, CBS Evening News
  • 21. www.predpol.com Data Flow Police Reports -> Predictions -> Users Police RMS (database) User Geocode Algorith m Hotspot Ranking Database Crime report Victim PredPol Computers
  • 22. www.predpol.com Cloud-based Service Set-up • Custom Java software running continuously on a machine within your network (analogous to public mapping software) to upload crime report info to PredPol server • Information is encrypted and transmitted securely to PredPol for analysis • For each crime report: address, date, time, crime type (no personal information required)
  • 23. Other Required Information www.predpol.com • Shift schedules • Latitude/longitude boundaries of each SFPD division • Crime type codes used in RMS
  • 24. Data + Criminal behaviors + Advanced mathematics = Highest probabilities of crime www.predpol.com
  • 25. “Mathematizing” Criminal Behavior Repeat Victimization Local Search Crime Patterns Mathematical Model www.predpol.com ¶A ¶t = B+ hD 4 Ñ2A-w A+qwd Environment Near-repeats
  • 26. Only Type Of Crime, Place Of Crime, And Time Of Crime Are Used More recent crimes given heavier weight. “Impersonal” data avoids profiling & privacy issues. www.predpol.com
  • 27. How Do We Know It Works? Accuracy & Efficacy Olympic Southwest Foothill Division of 250,000 people was first www.predpol.com Foothill N. Hollywood Hollenbeck Harbor
  • 28. Years of Testing, Proven in the Field Los Angeles Crime Reductions Starting in 2011 LAPD’s Foothill Division First Six Months 12% How do we know predictions worked in Los Angeles? Foothill Division was first to deploy & significantly outperformed Van Nuys % Change on Previous Year West Valley North Hollywood Foothill Devonshire Mission Topanga 10% 5% 0% -5% -10% -15% other divisions … Rest of L.A. During Same Period 0.4%
  • 29. How Do We Know It Works? The Impact on Property Crime www.predpol.com Month -12% Start of LAPD rollout in Nov. 2011 2010-2011 2011-2012
  • 30. Twice As Accurate As Rear View Mirror Crime Mapping www.predpol.com Predictive Policing Cops-on-the-dots Random
  • 31. Los Angeles Predictive Accuracy 3 Divisions, Single Blind Controlled Study www.predpol.com 2.3x Hot Spot Mapping
  • 32. Atlanta Phased Deployment (444,000 Pop.) Aggregate crime declined by 8 % and 9% in the two zones that first deployed predictive policing, with burglary and car thefts falling 10- www.predpol.com 28%. Source: Atlanta Police Foundation, April 2014 -8% -9%
  • 33. How Will You Know It’s Working For You? www.predpol.com
  • 34. ‘Radar’ Gives You Day To Day Tracking Of The Impact Of The Predictive Boxes • Allows you to track effectiveness of predictions in your jurisdiction • Identifies missed patrolling opportunities & maintains officer buy-in • Helps identify leading indicator crimes to improve predictions of your target crimes www.predpol.com
  • 35. Radar Tells You Whether Crime Is Up Or Down... www.predpol.com
  • 36. … And Radar Tracks Number of Crimes Occurring in Box and Perimeter Boxes. www.predpol.com
  • 37. PredPol Has: www.predpol.com Track record of success (so you’re no one’s predictive policing pilot) Easy installation and requires no new hires & no new hardware, with no limit on users A significant economic return that will free up money for additional needs & personnel Tools to measure effectiveness every day (so you don’t have to rely only on successes elsewhere)
  • 38.