Security and Communication Networks

Research Article

Multiview Ensemble Method for Detecting Shilling Attacks in Collaborative Recommender Systems

Algorithm 4

Ensemble detection algorithm.
Input: Ttest, BsClassifier , Xallopt,k, Fpre, Vpre
Output: PLabels
1 PLabels ←
2 SetBS←selectTopClassiffier(Fpre)
3 ←getfea(Ttest)
4 for  each u Uul  do
5 count ← 0
6 for  each pBS  do
7 for  i=1 to k  do
8 li ←BsClassifierp(u,Xi)
9 lp= lp+ liweightp,I
10 end for
11 if    then
12 vote=1
13 else
14 vote=-1
15 end if
16 count ←count +vote
17 end for
18 if  count>0  then
19 PLabelsu←
20 Else
21 PLabelsu←
22 end if
23 PLabels ←PLabels PLabelsu
24 end for
25 return PLabels