Question

Why the identity $P_X=P_XZ(Z'P_XZ)^{-1}Z'P_X$ with $P_X=X(X'X)^{-1}X'$?

score 1k · Answer 1 · 2016-02-02 19:08:24

1k

Views

Why the identity $P_X=P_XZ(Z'P_XZ)^{-1}Z'P_X$ with $P_X=X(X'X)^{-1}X'$?

Published on 02 Feb 2016 - 19:08

score 1.5k · Answer 2 · 2016-02-03 19:46:30

1.5k

Views

Linear regression using gradient descent: is the whole weight vector updated with the same number?

Published on 03 Feb 2016 - 19:46

score 87 · Answer 3 · 2016-02-03 21:49:43

87

Views

How estimate straight line using linear regression with some outliers

Published on 03 Feb 2016 - 21:49

score 159 · Answer 4 · 2016-02-12 11:27:50

159

Views

How do I find the values of $\theta_0$ and $\theta_1$ in linear regression?

Published on 12 Feb 2016 - 11:27

score 20.7k · Answer 5 · 2016-02-15 18:09:27

20.7k

Views

Fit plane to 3D data using least squares

Published on 15 Feb 2016 - 18:09

score 350 · Answer 6 · 2016-02-18 06:38:10

350

Views

Why does the order of elements affect the line of best fit/linear regression?

Published on 18 Feb 2016 - 6:38

score 386 · Answer 7 · 2026-03-26 07:31:53

386

Views

Imposing non-negativity constraint on a linear regression function

Published on 26 Mar 2026 - 7:31

score 107 · Answer 8 · 2016-02-21 08:01:51

For a linear regression $f$ of $\{(i,y_i)\}_{i=0}^{n-1}$, where $(y_i)$ is non-negative and increasing, is $|y_i - f(i)|$ at most $y_{n-1}$?

score 80 · Answer 9 · 2016-02-23 02:12:04

80

Views

Linear regression with $\left(\frac{h(x)}{y}-1\right)^2$ cost function?

Published on 23 Feb 2016 - 2:12

score 158 · Answer 10 · 2016-02-23 12:38:09

158

Views

Correlated multivariate linear least squares

Published on 23 Feb 2016 - 12:38

score 20 · Answer 11 · 2016-02-24 16:44:18

20

Views

How to regress certain non-linear data

Published on 24 Feb 2016 - 16:44

score 65 · Answer 12 · 2016-02-24 23:04:21

65

Views

Minimising two interdependent equations with least squares regression.

Published on 24 Feb 2016 - 23:04

score 46 · Answer 13 · 2016-02-26 00:18:33

46

Views

Estimating parameters of a linear model

Published on 26 Feb 2016 - 0:18

score 761 · Answer 14 · 2016-03-09 18:53:03

761

Views

R Squared in polynomial multipleregrssion

Published on 09 Mar 2016 - 18:53

score 88 · Answer 15 · 2016-03-13 04:50:51

88

Views

Formula for the error terms squared of a linear regression model

Published on 13 Mar 2016 - 4:50

List Question

Why the identity $P_X=P_XZ(Z'P_XZ)^{-1}Z'P_X$ with $P_X=X(X'X)^{-1}X'$?

Linear regression using gradient descent: is the whole weight vector updated with the same number?

How estimate straight line using linear regression with some outliers

How do I find the values of $\theta_0$ and $\theta_1$ in linear regression?

Fit plane to 3D data using least squares

Why does the order of elements affect the line of best fit/linear regression?

Imposing non-negativity constraint on a linear regression function

For a linear regression $f$ of $\{(i,y_i)\}_{i=0}^{n-1}$, where $(y_i)$ is non-negative and increasing, is $|y_i - f(i)|$ at most $y_{n-1}$?

Linear regression with $\left(\frac{h(x)}{y}-1\right)^2$ cost function?

Correlated multivariate linear least squares

How to regress certain non-linear data

Minimising two interdependent equations with least squares regression.

Estimating parameters of a linear model

R Squared in polynomial multipleregrssion

Formula for the error terms squared of a linear regression model

Trending Questions

Popular # Hahtags

Popular Questions