What is machine learning

What is machine learning

标签（空格分隔）： ML

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Definition of machine learning

1. Arthur Samuel:he defined the machine learning as the field of study that gives computer the ability to learn without being explicitly programmed.

2. Tome Mitchell:A computer program is said to learn from experience E,with respect to some task T,and some performance measure P,if its performance on T as measured by P improves with experience E.

Category

There are several types of learning algorithms.The main two types are what we called supervised learning anad unsupervised learning.

ML type	explanation
supervised learning	we're going to teach the computer how to do something.
unsupervised learning	we let itself learn by itself.
reinforcement learning
recommender system