User Kass

8

votes

3

answers

893

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Find parameters that minimize the distance between two curves in terms of the infinite norm

mathematical-optimization approximation

Jul 21 '16 at 8:45 J. M.'s technical difficulties♦ 112k

4

7

votes

1

answer

2k

views

Working with a CSV data file with 100 millions rows (and 30 columns)

list-manipulation import csv-format

Oct 12 '18 at 3:27 GenericAccountName 1,213

7

votes

1

answer

252

views

Draw from a given list according to empirical distribution

list-manipulation probability-or-statistics sampling

Dec 1 '16 at 17:50 gwr 10.8k

4

votes

1

answer

76

views

Openning JSON file, (NDJSON, new line delimited) — big file

import data dataset json-format databases

Jun 24 at 22:55 Jason B. 56.4k

2

4

votes

3

answers

558

views

Use NMinimize instead of FindFit for constrained search (of coefficients)

numerics mathematical-optimization fitting polynomials approximation

May 5 '16 at 0:05 Jack LaVigne 13.4k

4

votes

2

answers

637

views

FindFit and NMinimize to fit a parametric model (minimize the distance of two curves)

programming probability-or-statistics mathematical-optimization fitting modeling

Nov 7 '15 at 0:57 Community♦ 1

3

votes

4

answers

338

views

Problems with FindInstance in v. 11

equation-solving linear-algebra findinstance

May 7 '18 at 17:27 Akku14 9,398

3

votes

3

answers

470

views

FindFit with a sophisticated function (integral)

equation-solving differential-equations fitting polynomials approximation

Nov 6 '15 at 14:09 Jack LaVigne 13.4k

1

2

votes

2

answers

87

views

Replacing within a column without extracting it/modifying data

list-manipulation data

Jul 19 '19 at 8:39 Alx 3,352

1

2

votes

2

answers

7k

views

Font size in PlotLegends, using Table to generate the list in the legend

legending table fonts labeling plotting

May 7 '13 at 19:22 Community♦ 1

1

vote

0

answers

41

views

Problems with the parametric Recurrence Table

list-manipulation matrix performance-tuning difference-equations

Aug 17 '19 at 13:05 Kass 629

1

vote

1

answer

53

views

Selecting from a matrix according to elements of a column — efficiency and speed?

list-manipulation matrix performance-tuning

Jan 18 '19 at 17:26 Henrik Schumacher 81.9k

1

vote

2

answers

445

views

Finding and plotting a parametric solution to a complicated equation (transcendental, log-polynomial)

equation-solving programming numerics polynomials parametric-functions

Jun 28 '16 at 19:43 Community♦ 1

1

vote

2

answers

133

views

Creating authomatically inequalities/equations from a list of polynomials

list-manipulation map automation

Nov 20 '15 at 15:34 PlaysDice 774

1

vote

0

answers

104

views

FindFit with a sophisticated function (2), with corrected question and code

probability-or-statistics fitting polynomials integral-equations approximation

Nov 4 '15 at 20:48 Pillsy 16.8k

1

vote

0

answers

121

views

“Reduce” works fine for a non-linear system with 9 equations, but cannot solve it if 10 equations. Any ways to improve the code?

equation-solving simplifying-expressions linear-algebra algebraic-manipulation nonlinear

Oct 3 '15 at 21:43 Kass 629

0

votes

0

answers

68

views

Incorporating sophisticated constraints on the approximating function into NMinimize

programming mathematical-optimization fitting approximation

Nov 10 '15 at 19:37 Community♦ 1

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17 Questions

Find parameters that minimize the distance between two curves in terms of the infinite norm

Working with a CSV data file with 100 millions rows (and 30 columns)

Draw from a given list according to empirical distribution

Openning JSON file, (NDJSON, new line delimited) — big file

Use NMinimize instead of FindFit for constrained search (of coefficients)

FindFit and NMinimize to fit a parametric model (minimize the distance of two curves)

Problems with FindInstance in v. 11

FindFit with a sophisticated function (integral)

Replacing within a column without extracting it/modifying data

Font size in PlotLegends, using Table to generate the list in the legend

Problems with the parametric Recurrence Table

Selecting from a matrix according to elements of a column — efficiency and speed?

Finding and plotting a parametric solution to a complicated equation (transcendental, log-polynomial)

Creating authomatically inequalities/equations from a list of polynomials

FindFit with a sophisticated function (2), with corrected question and code

“Reduce” works fine for a non-linear system with 9 equations, but cannot solve it if 10 equations. Any ways to improve the code?

Incorporating sophisticated constraints on the approximating function into NMinimize