Computational Intelligence and Neuroscience

Research Article

[Retracted] Recommending Crowdfunding Project: A Graph Kernel-Based Link Prediction Method for Extremely Sparse Implicit Feedback

Table 5

NDCG of balanced and unbalanced collection methods on extremely sparse dataset.
No. of negative feedbacks per userBalanced methodUnbalanced method
10.118170.05372
20.176790.0856
30.195050.09459
40.252620.11475