Research Article
Unsupervised Negative Link Prediction in Signed Social Networks
Algorithm 1
The framework UN-PNMF for negative link prediction.
Input: , , α, λ | |
Output: Rank list of pairs of users | |
Construct the latent factor matrix In_ | |
Initialize randomly | |
while Not convergent do | |
Set | |
Set + | |
for i = 1:n do | |
for j = 1:k do | |
Update | |
end for | |
end for | |
end while | |
Set P_(i, j)=((WW)+σ(WWIn_Out))(i, j) | |
Ranking pairs of users according to P_ in a descending order |