Artificial Neural Networks

摘要

Machine learning (ML) problems can be divided into three categories: supervised, unsupervised, and reinforcement. In supervised learning, a human expert conducts some experiments in a restricted environment and notices their results. The supervised learning algorithm explores the data collected from experiments to map inputs to outputs. For example, a restricted environment might have a robot that wants to go from one side of a small room to another. There are some obstacles in the room that may make the robot fall. The supervisor provides guidance about how to reach the wall without falling. This is done by giving the robot knowledge in the form of examples to help it learn how to pass obstacles. The robot uses this knowledge to increase the probability of passing the obstacle without falling. In such a case, the knowledge of the robot is completely dependent on the human.