1. 3. Prioritize suspects using Geo-behavioural profiling
iOPS: An interactive Geo-Behavioural Profiling System
Professor David Canter
Dr Donna Youngs
Ian Oldfield
Freya Newman
iOPS is developed as both a research tool and an operational crime analysis and investigative decision support system with the Metropolitan Police Service. It is unique because of its ability to compare the visualisation of Modus Operandi and Spatial Mapping, using a Geographical Information System.
2. Identify offence series
1. M.O. 'heat map'
iOPS allows for the structural analysis of the co-occurrence of crime scene activity using multi-dimensional scaling (MDS). A structural model is presented as a conceptual 'map' that allows on screen selection of the criminal actions that co-occur, i.e. distinct sets of M.O. Behaviours are represented as points within a Smallest Space Analysis plot.
The closer they are the more often they co-occur. Frequencies indicated by heat contours (and in parentheses).
These selected sub-sets can be utilized within the system directly to search the data base and put matched crimes onto the map.
3. Prioritize suspects using
Geo-behavioural profiling
4. Social Network Analysis
Offender ID
Address
Probability
MO Match
124
Location A
427
Location B
Location C
226
Location D 48
Location E
Location F
0.3
Location G
Social Network Analysis on and off the map. This allows for further examination of other nominals who may be linked to a series of crimes
Geographical Profiling procedures for linking crimes and proposing offender locations. In-built functionality allows the crimes, or crime series, identified by the processes indicated, to be modeled, allowing possible locations of suspects' known addresses to be inferred. This can be used to draw out possible suspects using geographical profiling procedures and M.O ‘matching’ and to assign priorities to them.
5. Linked Offenders?