Multiview Ensemble Method for Detecting Shilling Attacks in Collaborative Recommender Systems

Algorithm 2

Optimal feature set partitioning algorithm.

Input: Bsclassifier, X, k, Vdata

Output:

1  n←getsize(X)

2  

3  for  i=1 to k  do

4  While    do

5  X_i←getDistinctFea(X,1)

6  

7  end

8  

9  end for

10  for  fea=k+1 to n  do

11  Xcur←getDistinctFea (X, 1)

12  for  i=1 to k  do

13  

14  

15  

16  end for

17  if    then

18  

19  

20  FA_t←Fval_t

21  end if

22  end for

23  X_opt

24  Return