Cluster models can perform much of the computation offline, but recommendation quality is relatively poor.

聚类模型能离线运行大量的计算，但推荐品质相对较差。

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Therefore, with the idea of multi-dimensional poverty, this paper will use the principal factor and cluster approach to define poverty, and on this basis, explore the characteristics of poor people.

因此，本文首先从多维贫困的视角出发，利用主因子和聚类的方法来界定贫困人口，并在此基础上，探寻贫困人口的贫困特征。

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Rome who respect him very much, men, women and children, rich or poor or low, always in his cluster around the altar in the raging flame, to listen to Valentine's prayer.

罗马人非常崇敬他，男女老幼，不论贫富贵贱，总会群集在他的周围，在祭坛的熊熊圣火前，聆听瓦沦丁的祈祷。

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Supposedly resulting from abnormal antenatal exposure to hormones, this cluster includes maleness, homosexuality, left-handedness, poor visual-spatial skills, immune disorders, and perhaps also language-learning talent.

ECONOMIST: What makes some people learn language after language?