TY  - JOUR
PY  - 2017//
TI  - Crime linkage of sex offences in Japan by multiple correspondence analysis
JO  - Journal of investigative psychology and offender profiling
A1  - Yokota, Kaeko
A1  - Watanabe, Kazumi
A1  - Wachi, Taeko
A1  - Otsuka, Yusuke
A1  - Hirama, Kazuki
A1  - Fujita, Goro
SP  - 109
EP  - 119
VL  - 14
IS  - 2
N2  - This study examined the effectiveness of multiple correspondence analysis (MCA) for linking crimes. The data consisted of 720 incidents committed by 360 individual offenders of serial criminal sexual contact cases (i.e., rape and forced indecency). According to the measured similarity obtained from the Euclidean distance in the MCA configuration, a rank-score was assigned to each linked pair and unlinked pair. The validity of MCA for linking crimes was evaluated with a 10-fold cross-validation procedure and a receiver operating characteristic analysis. The t-test of rank scores showed a statistically significant difference between linked pairs and unlinked pairs (t(641.43) = −18.53, p < .001, d = 1.38). The value of the area under the receiver operating characteristic curve was.83 (95% CI = .80-.86), indicating a high level of discriminative accuracy in distinguishing offences committed by the same person from those committed by different persons.<p />  <p>Language: en</p>
LA  - en
SN  - 1544-4759
UR  - http://dx.doi.org/10.1002/jip.1468
ID  - ref1
ER  -