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Date: October 5, 2019

Topic:

Recall

Regression

Least Squares (最小二乘)

Theorem Normal equations

How to identify linear systems “in the wild.”

Notes

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Problems with the above methods for finding a continuous f

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Both of these issues related to the larger problem of over-fitting: Fitting a function with n degrees of freedom to n data points leaves no room for measurement error.

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