Research Article
S2NMF: Information Self-Enhancement Self-Supervised Nonnegative Matrix Factorization for Recommendation
| Symbol | Definition |
| | Number of users | | Number of projects | | Set of users, | | Set of projects, | | User-item interaction matrix, the elements are generally nonnegative scores | | The predicted user-item interaction matrix | | The basis matrix | | The data in the reduced feature space, also called the combined coefficient matrix of the basis | | The community indication matrix | | The number of repetitions of matrix decomposition |
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