# Tagged Questions

Questions on the optimization functions of Mathematica such as FindMinimum/FindMaximum, Minimize/Maximize, NMinimize/NMaximize, etc.

1answer
123 views

### Risk-return trade-off — solving a convex optimzation

I try to convert a convex optimisation (cvxopt) example to the Wolfram Language from python. Source of the python code: Risk-return trade-off Please advise me on how to convert the following python ...
1answer
91 views

### How to Minimize an NIntegral

My problem is to minimize in Mathematica a numerical integral. The command FindMinimum[With[{R=2.5},NIntegrate[(R*r1*a)*Sin[r1*a],{r1,1,R}]],a] does calculate ...
1answer
41 views

### How to couple NIntegrate with FindMinValue

I have a problem with a correct transfer of values of parameters when NIntegrate (and some subsequent functions) are coupled with minimizing procedures in ...
0answers
69 views

### Possible memory leak in FindMinimum? (MMA v10.0)

So I was running some code when I noticed Mathematica was gulping memory, and after some debugging I think the culprit is found. It turned out the function ...
1answer
55 views

### How do I write a function inside a ArgMin

I want to solve this ArgMin[NIntegrate[(Tanh[x] - Erf[x/a])^2, {x, -5, 5}], a] and it does not work, what is the correct way to do this? ...
1answer
48 views

### Force mathematica to consider variables as real [closed]

I want to implement an optimization of the form: NMinimize[{function,{constraints:A1^2+A2^2+A3^2+A4^2 ==1}},{A1, A2, A3, A4}] where I want to tell mathematica ...
1answer
51 views

### Finding a vector many times

I have a vector matrix of profits say prof= {{1, 1, 1, 1, 1}, {2, 2, 2, 2, 2}, {3, 3, 3, 3, 3}, {4, 4, 4, 4, 4}, {5, 5, 5, 5, 5}}; I have a "terminal value ...
1answer
111 views

### How to transform the output of Minimize/Maximize into a function

I want to create a function directly from the output of Maximize. Specifically, I have the following function $f(l,h,d,a)$ that I want to maximize with respect to ...
0answers
29 views

### I want to plot the data which is based on Days vs Ph [duplicate]

I want to plot the data which is based on Days vs Ph
1answer
164 views

### Goal optimization: finding the best combination of capacitors and resistors resulting in given properties

I want to edit @MarcoB answers (because the code he gave doesn't answer the question appropriately)->(the function that need to be optimised is not implemented as asked) But it seems like I am having ...
0answers
74 views

### Classification problem using SVM methods

I am running SVM on mathematica and I a used this code with classes: ...
0answers
62 views

### Customized StepSize control in unconstrained gradient-descent optimization

I have a type of minimization problem I frequently solve that involves warping a large 2D triangle-mesh (~25,000 vertices) to fit a model. In the mesh, vertices carry the empirical measurements (each ...
3answers
764 views

### Exponential fitting - isn't actually a BUG there?

There are many questions on this site about wrong exponential fitting in Mathematica but no one considers this well-known problem as a potential bug. Usually people suggest well-known workarounds ...
1answer
55 views

### Optimizing best fit circle to given data set [duplicate]

Given a set of data, I have plotted a slowness curve for a p-wave resulting from the given data. A slowness curve is just the reciprocal of the velocity of the p-wave. What I need to do is find a ...
1answer
51 views

### Basic question about loops in mathematica

I am very new to Mathematica programming and am trying to find the optimum of a numerical integral for various values of a parameter. Here is the basic code for one parameter value that runs fine - I ...
0answers
45 views

### Obtained solution by NMinimize with constraints doesn't satisfy constraints [closed]

I am minimizing a multivariate function F(x_1, x_2, x_3 .... x_N) where N goes to 12, subject to a constraint z == 0 using ...
1answer
58 views

### How to check a clockwise direction for a list of point [closed]

Suppose that we have a list of points and we need to order them in clockwise direction by starting from a special point. I implemented this code to order them but I need to detect if it is ordered in ...
1answer
58 views

...
0answers
74 views

### Why has Version 10.3 precision reduced?

In version 7.0.1.0 and versions 10.0 and 10.1 the following is produced: ...
0answers
92 views

### How is the multi-class support vector machine classifier implemented? [closed]

I am using support vector machine (SVM) method with Classify to do multi-class. Can anyone tell me the reference (paper) used by Wolfram Mathematica to develop the ...
1answer
51 views

### Paramter Scans and $\chi^2$ Test in Mathematica

Is there any in-built function or a recommended package that enables one to find, say, 10 Parameters, which are used as boundary conditions in NDSolve, that minimize $\chi^2$? ...
1answer
196 views

### Maximized value of a function as an additional constraint on a variable

I want to maximize a function $f(b, h)$ with respect to its arguments and subject to some additional constraints. If these constraints are satisfied, $f$ is increasing in $h$. I then want to find an ...
2answers
161 views

### Find condition under which variables fall away

I have a somewhat lengthy expression, looking like expr = 1 + x + b + Pi + 2*a Is there some way of generating a relationship between ...
1answer
60 views

### Running this expression in Minimize function

So I got this expression here (written in pure text): ...
2answers
76 views

### ListSliceContourPlot3D with non-opaque stacked planes

I'd like to make a ListSliceContourPlot3D in Mathematica with using the stacked planes (x, y, or z) for the contours, but I'd like the planes to have an opacity ...
1answer
200 views

### Speed up construction of a dense matrix

I wish to find the numerical eigenvalues of a relatively small (100 dimensional) Hermitian matrix. While the eigenvalue calculation itself is fast, the construction of the matrix is taking longer than ...
1answer
45 views

1answer
49 views

### Minimization with respect to functional constraints [closed]

I am trying to do the following on Mathematica: Given a pair $(x,y)$, minimize an objective function $f(x,z)$ such that z satisfies $g(x,z) \leq g(x,y)$. I have defined both functions ...
1answer
56 views

### Count and NMinimize don't seem to work together

Initially I write down a 2x2 unitary (Uni) , make a tensor product 4 times (LocalUni) and apply it to an initial numerical matrix Rho, to obtain RhoLU, that depends on 12 parameters. This is my code: ...
1answer
57 views

### Minimization of linear combination of vectors

Suppose I have a vectors in $\mathbb{R}^{6}$. For example, take the vector $v = k(-2,2,4,6,2,2)$. I would like to find some $k$ with the constraint that the last two components are necessarily ...
1answer
304 views

### Bug in plotting function using FindMinimum?

Bug introduced in 10.0 and persisting through 10.3 or later While working on an answer to RegionPlot from NDSolve, I came across this strange behavior of ...