为解决词频矩阵的词频维数过大和矩阵过于稀疏的问题,提出一种子主题区域划分的多文档自动文摘方法。
In order to solve the greatly dimension of word frequency and sparse matrix, this paper proposes a multi-document summarization method based on sub-topics area partition.
据这项对2000名英国男性开展的调查显示,脱发或头发稀疏是男性担心的第二大形象问题,有40%的受访者对此感到担忧。
Hair loss or thinning, is the second most common concern, worrying 40 percent of the respondents to the Mintel survey of 2, 000 British men.
针对协同过滤中的数据稀疏问题,提出了一种基于粗集的协同过滤算法。
Aiming at the problem of data sparsity for collaborative filtering, a novel rough set-based collaborative filtering algorithm is proposed.
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