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sparseness
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稀少,稀疏,薄
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详细解释：
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以下为句子列表：
英文: A model-based recommendation algorithm was proposed, which uses Multi-level Association Rules (MAR) to alleviate those problems about data sparseness and scalability of the recent recommendation algorithm.
中文: 摘要提出一种基于多层关联规则(MAR)的推荐算法，着重解决目前推荐算法的稀疏性问题和可扩展性问题。
更详细...
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