J-GLOBAL ID:200904048704749955  Research Project code:0150000167 Update date:Dec. 06, 2001

Study on practical application of suspect retrieving system based on criminal method information

Study period:2000 - 2002
Organization (1):
Investigating Researcher (2):
Research overview:
The suspect retrieval system has been developed, based on modus operandi. The database used in the system stores a large number of records consisting of the modus operandi of prior offenders. A score is assigned to each record, where each score represents the similarity of the modus operandi between each record and a crime under investigation. The similarity is statistically calculated based on the choice probability of each modus operandi. Suspects in the database are rank-ordered according to scores. The higher a rank is, the more likely a suspect is expected to have committed the crime under investigation. The validity of the system has been evaluated in a series of studies, together with analyses of some factors influencing accuracy of the retrieval are discussed.
Keywords (4):
modus operandi ,  suspect prioritisation ,  random choice method ,  investigative psychology
Research program: Ordinary Research
Ministry with control over the research :
National Police Agency
Organization with control over the research:
National Research Institute of Police Science

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