Feature Proposals autocorrelation, transfer function and autoregressive model
@Tobias wrote: Hi, over the last years I have written code for some features I could not find in the MathNet Library at the time. I think migrating them to MathNet would be a nice way of sharing. The...
View ArticleI want to add Ridge and maybe Lasso regression
@docotor wrote: I want to implement Ridge and Lasso regression. As you recommend on github web site, I’ve decided to talk to you first. Do you have any comments, ideas why to add/not to add such a...
View ArticleCan't open the MathNet Visual Studio .sln for contributing
@Tobias wrote: Hi Everyone, I have some problems opening the Visual Studio solution file. I tried with VS 2015 Professional as well as with VS 2017 Community. C# Development installed for both of...
View ArticleMath.Net Polynomial Class Proposal
@Tobias wrote: I am currently working on a few features for MathNet.Numerics. For these features I require a Polynomial class implementations for numeric values (basically just an array of double...
View ArticleClik here to view.
Are these functions correct?
@GrasshopperDeveloper wrote: I’m working on a visual programming platform which uses and re-exposes a bunch of MathNet functionality as part of the standard toolkit. I state this merely to indicate...
View ArticleData fitting Questing （A+Bx^c)
@lonely917 wrote: I am amazing about mathnet，and it helps me a lot. Now I am wondering how to do fitting for this y = A+Bx^c. I have known the Power Fit and looked Linearizing non-linear models by...
View ArticleHow to accelerate the correlation caculation
@newonejoe wrote: Hi, I am new to Math.Net. It’s really a fantastic tool. Could you give me any suggestions about this situation? This takes around 20 second to get the result. signal size: 20000...
View ArticleSupport for 'LASSO', 'elastic-net', 'nearest shrunken centroid'?
@biothesis wrote: Hi, does the library contain correlation methods like ‘LASSO’ and ‘elastic-net’ and the method ‘nearest shrunken centroid’? I am not a mathematician. I will need them for my...
View ArticleCalculat the Gradient of A Function With No Expression
@agostinho.matos wrote: Hello, I want do define a scalar function from a set of discrete values: f=[10, 30, 5, 6,-10,11,12] over the domain x=[100,300,-8,40,300,200,100] respectively which has no...
View ArticleWhy need expansion in GoldenSectionMinimizer?
@Leonid_Eremin wrote: Hello Can you explain to me why need this cycle: while ((expansion_steps < maxExpansionSteps) && (upper.Value < middle.Value || lower.Value < middle.Value)) in...
View ArticleEstimate parameters Logistic function
@diegocorradini wrote: Hello everyone, Here is my problem, I’d like to fit some data in order to estimate the parameters of a Logistic function (perhaps 4PL and 5PL). I am a beginner with mathnet, I...
View ArticleUWP-support with NetCore 2
@NilesDavis wrote: Hi guys, from my point it is currently not possible to use Math.NET Numerics in a project based on NETCore.Platform 2.0. Am i right? Am I the only one intersted in this? Best...
View ArticleClik here to view.
FourierTransform - extrapolating the results?
@Otakar_Trunda wrote: I have two questions about FourierTransform: How can I extrapolate the results? I have a serie with - lets say - 100 elements, I compute its Fourier Forward Transform - this...
View ArticleDefinition of matrices. How do I do a matrix declaration, matrix memory...
@crjimenezr wrote: Hi everyone, my question is the following: How do I do a matrix declaration, matrix memory allocation, and matrix initialization as a three step process? The examples provided do it...
View ArticleHow to get a multivariate normal distribution
@BrianMcBrayer wrote: Hello, I really like Math.NET and am hoping to use it in an upcoming project (and maybe start contributing if I can–I’m not the best at math but I do know code). Can somebody...
View ArticleClik here to view.
Calculation of the Cofactor matriz of a Matrix A of size nxn
@crjimenezr wrote: Hi everyone, Has anyone ever come across the calculation of the cofactor matrix of a square matrix. Any idea how that can be done? Here is an example of a 3x3 matrix (I need to do...
View ArticleSystem of homogeneous linear equations: Ax=0 with Det(A)=0
@Vladimir wrote: Hello! I am trying to solve a systems of homogeneous linear equations like Ax=0. Here is an example matrix which has already been reduced for simplicity: 1 2 | 0 3 6 | 0 The solution...
View ArticleClik here to view.
ChiSquared.SamplesUnchecked optimisation bug?
@GrasshopperDeveloper wrote: There’s an optimisation in Numerics.Distributions.ChiSquared.SamplesUnchecked() for dealing with integer degrees-of-freedom. The result however seems incorrect:...
View ArticleCalculate the percentile of a group for a range (i.e. 0% - 20%)
@mtatro wrote: Hi Everyone, just started using this great library. What I am trying to do is find the data that sits in a percentile range. What I would like to do is determine which of the elements...
View ArticleNaN and -infinity when solving system of linear equations
@robs wrote: Hi there, I’m trying to do something really simple but am not having any luck. I’m trying to solve a system of linear equations Ax=B where A, x, and B are 4x4 matrices (x is a rotational...
View Article