User Lukas

3

11

votes

1

answer

298

views

Why FoldList 5 times faster than Apply for matrix multiplication? [duplicate]

matrix performance-tuning

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10

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2

answers

1k

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symbolic packages ncalgebra

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5

answers

435

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plotting logarithmic-scale

Jun 26 '15 at 10:51 Community♦ 1

1

9

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6

answers

495

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How to generate this structure of a list without `While` and the like?

function-construction coding-style

Apr 26 '16 at 7:34 Lukas 2,582

8

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0

answers

433

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How to determine reason for kernel crash? -> Nelder Mead optimisation

mathematical-optimization kernel crash

Feb 3 '15 at 11:02 Community♦ 1

7

votes

2

answers

437

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Gray boxes around labels in exported image (PDF, JPEG,…)

plotting graphics export

Feb 16 '18 at 10:52 SLesslyTall 313

7

votes

3

answers

323

views

Make NonlinearModelFit return continuous function

fitting

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3

7

votes

1

answer

552

views

How to stop optimization (e.g. NMinimize) after reaching target value

mathematical-optimization

May 7 '15 at 19:49 george2079 38k

6

votes

1

answer

561

views

Find numerical solution of (overdetermined) system of differential(-algebraic) equations

differential-equations equation-solving numerical-integration

Jan 28 at 11:17 J. M.'s torpor♦ 116k

1

6

votes

1

answer

324

views

How to speed up evaluation of expression (multiple variables) to gain speed? Compile?

performance-tuning simplifying-expressions compile

Aug 29 '18 at 7:33 Henrik Schumacher 88k

6

votes

0

answers

237

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Getting CUDALink (Toolkit 7.5) to work on Linux, Mathematica 10.0.2, GTX750

linux cudalink

Oct 18 '16 at 8:36 Community♦ 1

1

5

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3

answers

609

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How to be more efficient/faster with this MatrixExp-vector multiplication?

matrix performance-tuning linear-algebra

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5

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3

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131

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Create pattern to “redo” Nest for symbolic purposes, e.g. for commutators

pattern-matching symbolic expression-manipulation functional-style

Apr 22 '17 at 19:09 Mr.Wizard 261k

5

votes

2

answers

775

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Help at speeding up simplification/nested symbolic integration

calculus-and-analysis performance-tuning symbolic

Apr 13 '17 at 10:38 Community♦ 1

3

5

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4

answers

230

views

Multi-index variable depending on signature of permutation of indices

function-construction symbolic permutation index

Apr 1 '16 at 22:05 SquareOne 6,825

5

votes

0

answers

159

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List(Log)Plot with “high” resolution results in various warnings, e.g. BinCounts::step

plotting warning-messages

Oct 23 '15 at 11:12 Jason B. 59.3k

2

5

votes

2

answers

430

views

Automatically detect higher slope in numerical data (within a certain range)

fitting data

Sep 1 '15 at 19:46 user8074 1,532

1

4

votes

2

answers

338

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Elegant way to partition list to be faster than `ParallelTable` (using `ParallelSubmit`), or some alternative?

list-manipulation performance-tuning parallelization partitions

Feb 25 '16 at 16:19 Community♦ 1

4

votes

1

answer

324

views

How to transform a list (of sums) into list of summands

list-manipulation replacement

Aug 11 '15 at 2:14 Jens 93.7k

1

3

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2

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114

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Avoid hardcoding of variables for Compile by using a list

performance-tuning compile

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3

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1

answer

251

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Debug numerical error inside CompiledFunction

performance-tuning warning-messages compile

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3

votes

1

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Reshape output of TeXForm into one-line string

string-manipulation latex

Jul 17 '17 at 10:53 kglr 317k

1

3

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1

answer

83

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How to combine those rules into one? Does something like default values exist for patterns?

pattern-matching symbolic expression-manipulation

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3

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1

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Seemingly wrong eigenvectors for numerical matrix whose elements differ in scale by orders of magnitude

matrix numerics linear-algebra eigenvalues

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0

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97

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differential-equations linear-algebra

Oct 7 '15 at 17:25 Lukas 2,582

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0

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93

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NIntegrate a vector function without using Indexed and NDSolveValue?

numerical-integration

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2

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267

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How to treat indexed variables as Reals? Can they be symbolized?

calculus-and-analysis symbolic assumptions

Nov 18 '17 at 7:52 Alexey Popkov 50.6k

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84

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Use pattern as Assumptions: How to properly extend working pattern? [duplicate]

simplifying-expressions pattern-matching symbolic

Apr 26 '17 at 14:38 Stitch 4,095

2

votes

1

answer

399

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How to properly apply NumericQ or s.th. similar here? - NDSolve inside NMaximize

numerics mathematical-optimization expression-test

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0

answers

37

views

Make an existing solution for monitoring parallel jobs robust against dying kernels

dynamic parallelization

Apr 29 '16 at 10:25 Community♦ 1

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44 Questions

Why FoldList 5 times faster than Apply for matrix multiplication? [duplicate]

Non-commutative algebra (NCAlgebra): How to properly SetCommutingOperators

Use different markers/colors in logarithmic plot depending on sign

How to generate this structure of a list without `While` and the like?

How to determine reason for kernel crash? -> Nelder Mead optimisation

Gray boxes around labels in exported image (PDF, JPEG,…)

Make NonlinearModelFit return continuous function

How to stop optimization (e.g. NMinimize) after reaching target value

Find numerical solution of (overdetermined) system of differential(-algebraic) equations

How to speed up evaluation of expression (multiple variables) to gain speed? Compile?

Getting CUDALink (Toolkit 7.5) to work on Linux, Mathematica 10.0.2, GTX750

How to be more efficient/faster with this MatrixExp-vector multiplication?

Create pattern to “redo” Nest for symbolic purposes, e.g. for commutators

Help at speeding up simplification/nested symbolic integration

Multi-index variable depending on signature of permutation of indices

List(Log)Plot with “high” resolution results in various warnings, e.g. BinCounts::step

Automatically detect higher slope in numerical data (within a certain range)

Elegant way to partition list to be faster than `ParallelTable` (using `ParallelSubmit`), or some alternative?

How to transform a list (of sums) into list of summands

Avoid hardcoding of variables for Compile by using a list

Debug numerical error inside CompiledFunction

Reshape output of TeXForm into one-line string

How to combine those rules into one? Does something like default values exist for patterns?

Seemingly wrong eigenvectors for numerical matrix whose elements differ in scale by orders of magnitude

Does NDSolve automatically simplify the system of equations for Hermitian matices?

NIntegrate a vector function without using Indexed and NDSolveValue?

How to treat indexed variables as Reals? Can they be symbolized?

Use pattern as Assumptions: How to properly extend working pattern? [duplicate]

How to properly apply NumericQ or s.th. similar here? - NDSolve inside NMaximize

Make an existing solution for monitoring parallel jobs robust against dying kernels