User Mark L. Stone - Cross Validated

Mark L. Stone

Member for 8 years, 6 months
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Nonlinear Multivariate Dynamic Stochastic Global Optimum

266 Answers

Score Activity Newest

53 votes

Accepted

Do we need gradient descent to find the coefficients of a linear regression model?

answered Jul 31, 2015 at 15:07

50 votes

Accepted

How does the L-BFGS work?

answered Jun 13, 2017 at 12:03

27 votes

Accepted

Why are optimization algorithms defined in terms of other optimization problems?

answered Jan 2, 2017 at 5:44

26 votes

Why is logistic regression called a machine learning algorithm?

answered Jun 25, 2015 at 18:06

25 votes

Accepted

Why not use the "normal equations" to find simple least squares coefficients?

answered Apr 27, 2018 at 2:21

20 votes

Intuitive explanation for dividing by $n-1$ when calculating standard deviation?

answered Aug 28, 2015 at 15:28

20 votes

Accepted

Expected value vs. most probable value (mode)

answered Aug 14, 2016 at 16:24

19 votes

For i.i.d. random varianbles $X$, $Y$, can $X-Y$ be uniform [0,1]?

answered Aug 11, 2016 at 12:43

17 votes

Accepted

Is every correlation matrix positive definite?

answered Nov 21, 2015 at 14:09

17 votes

Accepted

Is it meaningful to calculate standard deviation of two numbers?

answered Aug 17, 2016 at 0:36

15 votes

Accepted

Does there exist any univariate distribution that we can't sample from?

answered Aug 25, 2016 at 23:31

14 votes

Are a sum and a product of two covariance matrices also a covariance matrix?

answered Jun 29, 2016 at 13:01

14 votes

How can I test a nonlinear vs a linear regression model?

answered Jun 14, 2015 at 11:42

12 votes

Free statistical textbooks

answered May 30, 2016 at 1:56

12 votes

Accepted

Relation between Covariance matrix and Jacobian in Nonlinear Least Squares

answered Aug 26, 2016 at 12:12

12 votes

Why use upper triangular Cholesky?

answered Aug 28, 2016 at 21:28

11 votes

Accepted

Mean of inverse exponential distribution

answered Aug 12, 2016 at 14:50

11 votes

Distribution of $(X+a)^2$ where $X$ is a standard normal and $a$ is a constant

answered Dec 9, 2015 at 17:06

11 votes

How to use the Cholesky decomposition, or an alternative, for correlated data simulation

answered Jul 5, 2015 at 22:02

10 votes

Accepted

Unbiased estimators of skewness and kurtosis

answered Jun 20, 2015 at 14:00

10 votes

Generate normally distributed random numbers with non positive-definite covariance matrix

answered Aug 19, 2016 at 0:33

10 votes

1/2 on lagrangian equation from lasso

answered Jun 26, 2017 at 15:45

9 votes

Accepted

Probability of the mininum

answered Jan 25, 2018 at 21:14

9 votes

Accepted

Any optimization problem can be expressed as one with a linear objective

answered Jun 9, 2018 at 12:08

9 votes

How to cross validate stepwise logistic regression?

answered Jul 24, 2015 at 0:01

9 votes

Who Are The Bayesians?

answered Aug 13, 2015 at 20:56

9 votes

Accepted

Getting expected value from Standard Deviation and Skew?

answered Dec 8, 2015 at 15:20

8 votes

Accepted

Where is a complex root on the unit circle?

answered Feb 26, 2016 at 1:20

8 votes

Accepted

Given $X,Y\sim i.i.U[0,1]$, what is $P(X<Y)$?

answered Aug 12, 2016 at 12:05

8 votes

Is this correct ? (generating a Truncated-norm-multivariate-Gaussian)

answered Jun 21, 2015 at 16:32

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