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Security Informatics

Table 4 Confusion matrix used to assess the recruitment model’s classification performance

From: Automatic detection of cyber-recruitment by violent extremists

Model classification

Observed classification

P r(R e c j |d i )≥θ

P r(R e c j |d i )<θ

Recruitment = True

True positives

False negatives

P=T P+F N

 

(T P)

(F N)

 

Recruitment = False

False positives

True negatives

N=F P+T N

 

(F P)

(T N)

 
 

P ̂ =TP+FP

N ̂ =FN+TN

I=P+N

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