5.2学习小结

Supervised learning

  • 给algorithm一个data set in which “right answers” given
  • Regression: predict continuous valued output
  • Classification = discrete valued output(0 or 1)

Unsupervised learning

  • just give algorithm a data set nothing else(no extra information)不知道数据集的意义
  • clustering algorithm 聚合算法
  • Cocktail party problem 鸡尾酒会算法
  • Octave
    diabetes