Slide 1

What HunchLab Is….

NOT a way to understand Igor

• Look at crime density changes• Get notified about them• Get more information

IS a new way to:

Slide 2

Police Captain as Data Server

Slide 3

A Pin Map

Slide 4

A Visualization Solution Becomes a Problem

• 1.5 million incidents per year• Around 40 crime classifications• Approximately 6900 sworn officers

Slide 5

A Classic Problem – The “Data Tornado”

By Golly Toto, it’s a twister!

Slide 6

Where Do They Clump?

From http://data.baltimoresun.com/crime/anne_arundel/accident-person-injured/?mode=heat (not HunchLab)

Slide 7

?

What We Really Want to Know – How are the Densities CHANGING?

Crimes 8/16/2008 – 8/22/2008

Crimes 8/23/2008 – 8/30/2008

Slide 8

How Do We Figure out Density Change?

•Take an area or *many* areas to evaluate

• Use statistics to compare historical norms to current densities• But… how?

• Call crimes balls in a bag.

Slide 9

That’s Right, Balls In a BagThat’s Right, Balls in a Bag

A bag has 20 black balls and 80 white balls. Choose 5 at random. What is the chance of getting 3 black balls?

Vary number of balls chosen and you get a

Hypergeometric Distribution

Slide 10

Crimes -> Balls -> ProbabilitiesCrimes Balls Probabilities

Slide 11

Lather, Rinse, Repeat Lather, Rinse, Repeat

Slide 12

Enter HunchLa

b

Slide 13

Using HunchLab - Notification

Hmmmm…

Slide 14

Using HunchLab – Results Viewing

Slide 15

Using HunchLab – Graphing

Sixteen you say? By Jove!

Slide 16

Using HunchLab – Drill Down

7001 Bridgeport Wy W?Of

Course!

Slide 17

Using HunchLab – Hunch Creation

Our villain is probably active here too! Let’s check…

Slide 18

Using HunchLab – Mass Hunch Creation

Slide 19

Using HunchLab – Search

You’ve been working hard Watson…

Slide 20

Future…

Thanks to

Andy Warhol