Extending the remit of evidence-based policing

Evidence-based policing (EBP) is an important strand of the UK’s College of Policing’s Police Education Qualifications Framework (PEQF), itself a component of a professionalisation agenda. This article argues that the two dominant approaches to EBP, experimental criminology and crime science, offer limited scope for the development of a comprehensive knowledge base for policing. Although both approaches share a common commitment to the values of science, each recognizes their limited coverage of policing topics. The fundamental difference between them is what each considers ‘best’ evidence. This article critically examines the generation of evidence by these two approaches and proposes an extension to the range of issues EBP should cover by utilizing a greater plurality of methods to exploit relevant research. Widening the scope of EBP would provide a broader foundational framework for inclusion in the PEQF and offers the potential for identifying gaps in the research, constructing blocks for knowledge building, and syllabus development in higher level police education

Making machine intelligence less scary for criminal analysts: reflections on designing a visual comparative case analysis tool

A fundamental task in Criminal Intelligence Analysis is to analyze the similarity of crime cases, called CCA, to identify common crime patterns and to reason about unsolved crimes. Typically, the data is complex and high dimensional and the use of complex analytical processes would be appropriate. State-of-the-art CCA tools lack flexibility in interactive data exploration and fall short of computational transparency in terms of revealing alternative methods and results. In this paper, we report on the design of the Concept Explorer, a flexible, transparent and interactive CCA system. During this design process, we observed that most criminal analysts are not able to understand the underlying complex technical processes, which decrease the users' trust in the results and hence a reluctance to use the tool}. Our CCA solution implements a computational pipeline together with a visual platform that allows the analysts to interact with each stage of the analysis process and to validate the result. The proposed Visual Analytics workflow iteratively supports the interpretation of the results of clustering with the respective feature relations, the development of alternative models, as well as cluster verification. The visualizations offer an understandable and usable way for the analyst to provide feedback to the system and to observe the impact of their interactions. Expert feedback confirmed that our user-centred design decisions made this computational complexity less scary to criminal analysts

Reducing the offending of a UK organized crime group using an opportunity reducing framework - a three year case study

The proliferation and capability of organised crime groups (OCGs), threaten to overwhelm the finite resources of police agencies. Although proactive ‘intelligence led’ approaches are more adept in identifying the most problematic offenders, responses predominantly rely on enforcement tactics, often delivering limited outcomes at significant cost. This paper outlines a case study involving a northern English police force, working alongside community safety partners and the public, in a bid to reduce the offending opportunities of an OCG. The multi-agency disruption tactics were categorised using the five themes highlighted by Cornish and Clarke (Criminology 25:933–949, 1986) in their Rational Choice Theory framework. The impact of the operation was evaluated by comparing criminal conviction data and police intelligence immediately prior to the police operation with similar data 2 years later. This was supplemented by semi-structured interviews with police officers (including patrol, detective, middle and senior ranking officers), partner agencies and the community. The operation was effective in reducing the threat posed by the OCG and was popular with those involved in its implementation. As it was delivered with no increased resources it provides a viable and cost effective method of reducing the threat of OCGs although further research is required to test its impact in different police agencies and against different OCGs