User user122358 - Mathematics Stack Exchange

122 votes

4 answers

183k views

What is the difference and relationship between the binomial and Bernoulli distributions?

asked Jun 18, 2014 at 6:01

17 votes

3 answers

23k views

What is orthogonal transformation?

asked Mar 16, 2017 at 19:04

12 votes

2 answers

13k views

The meaning of Inverse Matrix

asked Jul 26, 2014 at 5:22

11 votes

4 answers

7k views

What does a positive definite matrix have to do with Cauchy-Schwarz Inequality?

asked Apr 9, 2015 at 3:32

8 votes

1 answer

687 views

What do the two things such that "Data is fixed" and "Parameters vary" in Bayesian statistics mean?

asked Feb 3, 2017 at 0:32

6 votes

2 answers

307 views

What is the mechanism of Eigenvector? [closed]

asked Mar 17, 2017 at 16:01

5 votes

1 answer

12k views

Variances for K-Means clustering

asked Nov 6, 2014 at 17:38

5 votes

2 answers

13k views

Initial value of Newton Raphson Method

asked Jul 4, 2014 at 7:26

4 votes

1 answer

1k views

Maximization Lemma in Matrix Algebra

asked Apr 9, 2015 at 5:05

4 votes

3 answers

651 views

Question about English sentences in statistics?

asked Jun 18, 2014 at 14:33

4 votes

5 answers

3k views

Why the natural log is there in MLE?

asked Feb 21, 2014 at 3:09

3 votes

3 answers

5k views

How to understand the variance formula?

asked Jun 17, 2014 at 14:37

3 votes

1 answer

1k views

Math formulas on Clustering

asked Jul 29, 2014 at 4:47

3 votes

2 answers

217 views

Population Variation with two variables

asked Nov 6, 2014 at 14:00

3 votes

2 answers

2k views

What is the relationship or difference between MLE and EM algorithm?

asked Aug 9, 2015 at 14:14

3 votes

1 answer

677 views

What is KL-Divergence? Why Do I need it? How do I use it?

asked Jul 5, 2016 at 9:06

3 votes

1 answer

990 views

Proof for Maximum Likelihood Estimation

asked Jan 4, 2017 at 16:17

2 votes

3 answers

170 views

Linear Algebra Question for Repeated Eigenvalues

asked Apr 7, 2015 at 9:26

2 votes

1 answer

1k views

Relationship between Spectral Decomposition, Positive Definite Matrix and Quadratic Form

asked Apr 8, 2015 at 14:34

2 votes

2 answers

102 views

Plain English interpretation needed for the sentence to understand EM-algorithm?

asked Aug 13, 2015 at 2:55

2 votes

1 answer

1k views

What is the relation between convexity and positive semi-definite Hessian Matrix?

asked Mar 19, 2017 at 17:17

2 votes

0 answers

115 views

Why do I use gradient descent for a linear regression instead of differentiating for the minimum error point?

asked Mar 21, 2017 at 19:44

2 votes

2 answers

3k views

When $A^TA = I$, what matrix is orthogonal to what?

asked Mar 25, 2017 at 11:51

2 votes

1 answer

1k views

What does "orthogonal matrices preserve orthogonality" mean?

asked Mar 25, 2017 at 16:58

2 votes

1 answer

229 views

Singular-value Decomposition explanation.

asked Apr 10, 2015 at 9:50

2 votes

2 answers

101 views

Question about Logistic Regression - 4

asked Jun 20, 2014 at 8:55

2 votes

2 answers

90 views

How can I solve the equation...

asked Jan 19, 2014 at 8:01

2 votes

1 answer

2k views

Differentiation for least squares method?

asked Feb 16, 2014 at 1:59

2 votes

2 answers

176 views

How can I compare two vectors if their inner product is zero?

asked Mar 31, 2017 at 10:29

1 vote

0 answers

161 views

How do I know the Hessian of $A^TA$ is the minimum for Maximum Likelihood Estimation of a multivariate normal distribution?

asked Mar 19, 2017 at 13:05

Stack Exchange Network

82 Questions

What is the difference and relationship between the binomial and Bernoulli distributions?

What is orthogonal transformation?

The meaning of Inverse Matrix

What does a positive definite matrix have to do with Cauchy-Schwarz Inequality?

What do the two things such that "Data is fixed" and "Parameters vary" in Bayesian statistics mean?

What is the mechanism of Eigenvector? [closed]

Variances for K-Means clustering

Initial value of Newton Raphson Method

Maximization Lemma in Matrix Algebra

Question about English sentences in statistics?

Why the natural log is there in MLE?

How to understand the variance formula?

Math formulas on Clustering

Population Variation with two variables

What is the relationship or difference between MLE and EM algorithm?

What is KL-Divergence? Why Do I need it? How do I use it?

Proof for Maximum Likelihood Estimation

Linear Algebra Question for Repeated Eigenvalues

Relationship between Spectral Decomposition, Positive Definite Matrix and Quadratic Form

Plain English interpretation needed for the sentence to understand EM-algorithm?

What is the relation between convexity and positive semi-definite Hessian Matrix?

Why do I use gradient descent for a linear regression instead of differentiating for the minimum error point?

When $A^TA = I$, what matrix is orthogonal to what?

What does "orthogonal matrices preserve orthogonality" mean?

Singular-value Decomposition explanation.

Question about Logistic Regression - 4

How can I solve the equation...

Differentiation for least squares method?

How can I compare two vectors if their inner product is zero?

How do I know the Hessian of $A^TA$ is the minimum for Maximum Likelihood Estimation of a multivariate normal distribution?