Evaluation of links in heroin seizures.
The evaluation of a link between two heroin seizures using a descriptive method is presented. It is based on the measure of the angles between two chromatograms assimilated to vectors, and interpreted using a continuous approach based on the likelihood ratio of Bayes' theorem. A complete evaluation model thus avoids the drawbacks of decision thresholds used until now to establish a link. Validation is obtained through tests and simulation methods.
Dujourdy
L
L
Institut de Police Scientifique et de Criminologie, University of Lausanne, BCH, 1015 Lausanne-Dorigny, Switzerland. laurence.dujourdy@ipsc.unil.ch
Barbati
G
G
Taroni
F
F
Guéniat
O
O
Esseiva
P
P
Anglada
F
F
Margot
P
P
D005554:Forensic Medicine / Q000706:statistics & numerical data*; D003932:Heroin / Q000009:adverse effects*; D006801:Humans; D016013:Likelihood Functions; D015233:Models, Statistical; D009294:Narcotics / Q000009:adverse effects*; D015203:Reproducibility of Results; D012640:Seizures / Q000139:chemically induced*; D013223:Statistics as Topic / Q000379:methods*
D009294:Narcotics; D003932:Heroin