12. Chicago 2.8 M - - -
None / Fax
Request
Form
New York City 8.3 M Precinct Weekly
Philadelphia 1.4 M Block Daily
Max 500
Records
Dallas 1.2 M Address Daily
Washington, DC 588,000 Address Daily
Data Granularity
Data Form
at(s)
Update Frequency
Population
Restrictions
16. Washington, DC 588,000
Milwaukee 602,000
Atlanta 519,000
Sacramento 460,000
Dallas 1.2 M
Indianapolis 795,000
Houston 2.2 M
Seattle 594,000
Philadelphia 1.4 M
Chicago 2.8 M
San Francisco 764,000
New York City 8.3 M
Los Angeles 3.8 M
Detroit 917,000
Boston 599,000
Grade
Data Granularity
Data for Download
Online Crim
e M
aps
GIS Departm
ent
Live 911 Feeds
Poor Excellent
*Ratings as of August 9th
, 2009
**Population Source: U.S. Census Bureau
A
B
B
B
B
Population
C
C
C
C
D
D
D
D
D
D
19. Five Finger Discount Anyone?
There was a theft 41 ft. from here
on 10/9/2008. The exact location
was 800 Mt. Vernon Place NW…
an unknown suspect stole the
listed property from Hall-C.
Hi there.
Introduction to AYS
Willy Wonka
Get on my soap-box and pontificate about the state of crime data transparency in the us
AYS is a hand held gieger counter for crime
1) Tell you your relative safety to toher parts of the city
2) tells you w/in a 2 block radius it the amount of reported crimes broken by type
3) lastly, tells you the closest crime to your location in the year prior
It automatically updates as you move, or you can type in addresses manually
Live in these cities
These soon to follow
User demographics and Q’s they ask themselves
Specifically:
L+S: car theft
Hoosiers/Hinkle: pretty d=safe
Walter/Robberies:
Assault:
It’s a data driven app
Sources are both Federal census data
And municipal crime incidents
You are looking at sacramentos 76,000 ‘08 crime incidents, broken out by type
Tech stack we use (from upper left) for:
Geocoding
Visualization
QA
Mobilization
Processing
Hosting
Development
Polish
Aquire (via download, or social engineering)
Std on crime types across cities
Geocode the addresses (getting precise lat/long for each incident)
Lay a grid over the entire city
For each on of those grid points, we calc a score based on severity and quantity of crimes
Output a reported crime heat map
Lay census groups over the city
For each grid point we mult score from b4 * ppl / sq mile
Apply a curve for eq distribution of levels
Output and QA the heatmap
Mobilize it
Utilize social media tools/forums to get the word out
One on the most frequent q’s we are asked is:
“when r u coming to my city [boston/ny/detroit/chicago]?”
“Why not [boston/ny/detroit/chicago]”
Well, We go where the data is,
And, the overwhelming majority of cities have not made the data publicly available, and in the required levels of granularity and format
So what are those formats, and levels of granutalty?
AYS is about a hyperlocal information
how safe am I at this street corner, NOT how safe am I in brookyln
[Thus one needs] to do that we need un-summarized, incident specific data,
+ those incidents [at a minimum] need addresses and crime types
The availability of “RAW DATA” is directly proportional to ability to craft rich “data driven” solutions
Starting with a cities onlinemap, or pdf, is like trying to extract the ingredients from a chili
Solution providers need a municipalities raw ingredients
Some examples of what cities make avail for download:
Chi – fax request form fail
NYC – PDF of precient level data
DC – any fromat you want, adress level detail, updated daily
Lack of data Standardization,
complicates the aim of creating a reusable solution spanning mult cities
[Means more time spent pre-processing data]
MKE: would use up to 5 offense per each incident
SAC: had 621 more crime types than MKE (MKE=36, SAC=657)
----
In defining the type of crime,
the number of attributes,
the attribute names,
and content were all diff
for each of the respective cites
we processed
This is a fun slide
Shows us the various crime attributes cities used to desc crimes
ATL:
DAL:
DC/DAL:
IND/SAC: bare bones
Sampling of some of the crime portals:
don’t have to have a fancy site, one link download will do
PHL: allows downloads, but only 500 at a time [,per spec addr]
SAC: Data back to 1997, mult formats
DC: easiest to nav, many formats and flavors of crime incident data
ATL: back to 2004, easy to locate data
IND: Kinda hard to navigate per year text file
Crime Data Transparency Report Card
Note inversely proportional relationship btw high grades and population
Equation derived from:
Maturity of GIS dept
Data avail for download
Granularity of data avail
Simpler view of the current evolved state of various cities “crime data transparency”
Some cities are halted,
Some are evolving quickly,
And some are “kicking ass/butt”
Here we share some commentary on the gov2.0 paradigm
We believe that cities should focus their energies on collecting and freeing data, and let the crowd take it from there
we see Data availability as the biggest bottleneck to the inevitable explosion of enabling applications
Are you safe right here in room 146?
Open letter
Hi there.
Introduction to AYS
Willy Wonka
Get on my soap-box and pontificate about the state of crime data transparency in the us
