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Kass

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17 Questions

Votes Activity Newest Views

votes

answers

992

views

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 ennui♦ 116k

votes

answer

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 1,428

votes

answer

287

views

Draw from a given list according to empirical distribution

list-manipulation probability-or-statistics sampling

Dec 1 '16 at 17:50 gwr 11.1k

votes

answer

183

views

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

import data dataset json-format databases

Jun 24 at 22:55 Jason B. 59k

votes

answers

591

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 13.8k

votes

answers

742

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

votes

answers

361

views

Problems with FindInstance in v. 11

equation-solving linear-algebra findinstance

May 7 '18 at 17:27 Akku14 10.8k

votes

answers

502

views

FindFit with a sophisticated function (integral)

equation-solving differential-equations fitting polynomials approximation

Nov 6 '15 at 14:09 Jack LaVigne 13.8k

votes

answers

134

views

Replacing within a column without extracting it/modifying data

list-manipulation data

Jul 19 '19 at 8:39 Alx 3,432

votes

answers

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

vote

answers

views

Problems with the parametric Recurrence Table

list-manipulation matrix performance-tuning difference-equations

Aug 17 '19 at 13:05 Kass 631

vote

answer

100

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 87.9k

vote

answers

471

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

vote

answers

142

views

Creating authomatically inequalities/equations from a list of polynomials

list-manipulation map automation

Nov 20 '15 at 15:34 PlaysDice 774

vote

answers

107

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 17.6k

vote

answers

130

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 631

votes

answers

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