矩阵稀疏性
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sparsity matrix 稀疏矩阵
sparsity of matrix 矩阵稀疏性
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And point out the problems existed in the traditional collaborative filtering methods: ratings matrix sparsity, cold start, vulnerability, single interest model and scalability issues.
指出了传统协同过滤方法存在着评分矩阵稀疏、冷启动、易受攻击性、兴趣模型单一和可扩展性等问题。
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