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1.Arthur Samuel(1959),machine Learning:Field of study that gives computers the ability to learn without being explicitly programmed.
根据1959年,Arthur Samuel对机器学习的定义:在不针对计算机编程的情况下,赋予计算机学习能力的一个领域。
2.Tom Mitchell(1998),Well-posed Learning Problems: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.
一个更好的定义是1998年Tom Mitchell提出的:对于一个计算机程序,给它一个任务T和一个性能测量方法P,如果在经验E的影响下,P对T的测量结果得到改进,那么就说该程序从E中学习。
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