Twitter Join the Where 2.0 Facebook Group Where 2.0 LinkedIn Group Sign up for the Where 2.0 Newsletter (login required) Where 2.0 Video Where 2.0 RSS Feed Attending? Add to Dopplr Tag with Where 2.0 2009 Schedule Attendee Directory
  • ESRI
  • Google
  • Nokia
  • Yahoo! Inc.
  • AND Automotive Navigation Data
  • earthmine
  • First American Spatial Solutions
  • Waze
  • Google

Sponsorship Opportunities

For information on exhibition and sponsorship opportunities at the conference, contact Yvonne Romaine at [email protected]

Download the Where 2.0 Sponsor/Exhibitor Prospectus

Media Partner Opportunities

Download the Media & Promotional Partner Brochure (PDF) for information on trade opportunities with O'Reilly conferences or contact [email protected]

Press and Media

For media-related inquiries, contact Maureen Jennings at [email protected]

Where 2.0 Newsletter

To stay abreast of conference news and to receive email notification when registration opens, please sign up for the Where 2.0 Conference newsletter (login required)

Where 2.0 Ideas

Have an idea for Where to share? Tell us!

Contact Us

View a complete list of Where 2.0 contacts

A Crime Early Warning System: Using Spatial Statistics to Detect Changing Geographic Patterns in Crime

David Felcan (Avencia)

Large quantities of spatial data can be as much a burden as a boon without the tools to properly tease out important information. For police departments, HunchLab enables early detection of changes in patterns of crime, pulls information automatically out of millions of incident records, and provides the means of detecting and stopping spikes in crime earlier than they would be found through more conventional means.

The cost of crime is not only measured in terms of injury, loss of life and property, law enforcement, court and corrections, but it also imposes substantial indirect and social costs through insurance rates, blight, damage to education, community and family disintegration, damage to the tax base and property value. Criminal activity is an incredibly dynamic phenomenon. Patterns shift and change daily and weekly in response to changes in target behavior, police intervention, business activity and other factors. Increasingly, the police commander, the special unit and the officer in the street have access to technology that makes their professional work both safer and more effective, but street crime remains a perniciously difficult phenomenon. From electronic maps to databases, police staff have greater access to information about the incidence of crime, but the sheer volume of data in an urban police department is crushing.

Now imagine you are a police captain, and you could receive an e-mail on your Blackberry every morning summarizing how the district’s crime patterns changed in the past 24 hours. Or imagine that an officer responding to a domestic disturbance is able to place an alert on a particular address so he will be notified if any other calls occur at that address – if these additional domestic disturbance calls occur, they may be a precursor or signal of domestic abuse for which intervention by social services could prevent a aggravated assault or even a homicide. HunchLab is a software tool developed for law enforcement organizations to enable these features. It is essentially an ‘early warning system’ for events that a) have specific geographic locations, b) occur in relatively large numbers and c) change in frequency over time.

David Felcan


David Felcan is a software developer with over 4 years of experience building geospatial web-based solutions. He is familiar with Microsoft .Net technologies, ESRI’s web development technologies and Open Source geospatial tools such as Geoserver and OpenLayers.