吳恩達-機器學習筆記(1)

無監督學習：一個程序被認爲能從經驗E中學習，解決任務T，達到性能度量值P，當且僅當，有了經驗E，經過P的評判，程序在處理T時性能有所提升。 A computer program is said to learn from experience E with respect to some task T and some performance measure P , if its performa

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