John Irwin and the Convict Criminology Code

THIEVES, CONVICTS AND THE INMATE CULTURE JOHN IRWIN and DONALD R. CRESSEY

tries which make use of a union hiring hall. In the absence of studies which isolate the effect of such factors, our findings cannot readily be generalized. It is tempting to suggest after an initial look at the results that social class differences provide the explanation. But subsequent analysis and research might well reveal significant intra-class variations, depending on the distribution o...

Convict Marriages

Sir,?Major YVoolley's excellent article on Convict marriages in the Andamans in your March number does not appear to have aroused the comment?favourable or the reverse?which I anticipated and which it deserved. It is, however, of great interest to all those who have at heart the improvement of the criminal in the present and his disappearance in the future. As lie says, it is rather a shock to ...

Appraising Credit Ratings: Does the CAP Fit Better than the ROC?; by R. John Irwin and Timothy C. Irwin; IMF Working Paper 12/122; May 1, 2012

ROC and CAP analysis are alternative methods for evaluating a wide range of diagnostic systems, including assessments of credit risk. ROC analysis is widely used in many fields, but in finance CAP analysis is more common. We compare the two methods, using as an illustration the ability of the OECD’s country risk ratings to predict whether a country will have a program with the IMF (an indicator...

Psychiatry and Criminology

Computational Criminology

In this report, we present our work done in spring 2011 on the UK crimes dataset. This dataset was first released in December 2010, and contains reports of crimes committed in England and Wales, with their type and location. We first perform some exploratory analysis on this data, by looking at the correlation of crime rates with some independent variables, such as the population density or the...