摘要：
无监督学习 Unsupervised learning allows us to approach problems with little or no idea what our results should look like. We can derive structure from data 阅读全文
摘要：
监督学习 (Supervised Learning) "right answers" given (监督学习的特点是：给定“正确答案”) In supervised learning, we are given a data set and already know what our correct 阅读全文