[机器学习入门] 李宏毅机器学习-4（Where does the error come from? ；误差分析）
Review
![[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）](/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpJeU9DOWlaV1poTlRVeVl6RXlZbVl5TlRaa01UWTVORGMwT1RFNFpHRmhaVEkwWXk1d2JtYz0= "[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）")
Estimator
![[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）](/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THprMk9DOWhabUUwTURnd1l6YzJNbVprTlRkbU5EaGtNemxsT0dFNU5UWTBNakk1T0M1d2JtYz0= "[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）")
Bias and Variance of Estimator
![[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）](/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpFNE5DOWtPREE0WldFMk1XSmhZMlkxTm1NME56UXpNemhoTW1ZeU16WTFaR05pTUM1d2JtYz0= "[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）")
Variance
![[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）](/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpJNE15ODVZMkZrWmpaall6SmhZVEUxT0RZeE1qTXpORFU0WlRZMU16azRPRFJrWWk1d2JtYz0= "[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）")
Bias
![[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）](/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpZek15OWhZemhqTnpnelptRTVNMlV6WWpRNVlUa3dZelppT1RneFlqUTJOV1U0TVM1d2JtYz0= "[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）")
![[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）](/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpjME15OWpNR0V3TkRRM1lXTTFNRGN6TkRjMU1qZzVNemRrT1dJMll6WTRNalE0Wmk1d2JtYz0= "[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）")
Bias v.s. Variance
![[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）](/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpFeE5DOWlOV05oWXpZMlpHVm1OMkUxTldNeFptRmhNak0zWkRKak9XTmtNalE1TWk1d2JtYz0= "[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）")
What to do with large bias?
![[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）](/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpReE9DODROMlF6WTJObE5qY3dNR016T0RWaU1EbGhZbUZtWWpNNFpqSmtNMlZpTWk1d2JtYz0= "[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）")
What to do with large variance?
![[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）](/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpRNU1DOHdNMlUwWm1KaE9UUXhOamM0TlRWbE1XTmlZMkppTVRWbU5tRmlObVV4TWk1d2JtYz0= "[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）")
Model Selection
![[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）](/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpJMU5TOWlOakkxTTJFM01EY3lNemMzT0dabVlXVTJaV0U0TnpBNVpUTmpOVFV6Tnk1d2JtYz0= "[机器学习入门] 李宏毅机器学习笔记-4（Where does the error come from ；误差分析）")
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