Clustering is an unsupervised learning technique. 聚类分析是一种非监督学习技术。
In our discussion, classification is a significant component of the pattern recognition system, but unsupervised learning may also play a role there. 我们认为,分类是模式识别系统的一个重要组成部分,但是无监督学习也可能可以实现一样的功能。