Math.NET Numerics

Welcome to our official feedback forum. Do you have an idea? Do you recognize a good idea when you see one? We want to hear from you!

I suggest you ...

You've used all your votes and won't be able to post a new idea, but you can still search and comment on existing ideas.

There are two ways to get more votes:

  • When an admin closes an idea you've voted on, you'll get your votes back from that idea.
  • You can remove your votes from an open idea you support.
  • To see ideas you have already voted on, select the "My feedback" filter and select "My open ideas".
(thinking…)

Enter your idea and we'll search to see if someone has already suggested it.

If a similar idea already exists, you can support and comment on it.

If it doesn't exist, you can post your idea so others can support it.

Enter your idea and we'll search to see if someone has already suggested it.

  1. Implement SetSubMatrix(int[] rowIndices, int[] columnIndices, Matrix<T> subMatrix)

    Implement method:

    Matrix<T>.SetSubMatrix(int[] rowIndices, int[] columnIndices, Matrix<T> subMatrix)

    where

    int[] rowIndices
    The row indices to copy to.

    int[] columnIndices
    The column indices to copy to.

    Matrix<T> subMatrix
    The sub-matrix to copy from.

    This would enable us to set a larger number of entries at the same time.

    1 vote
    Vote
    Sign in
    Check!
    (thinking…)
    Reset
    or sign in with
    • facebook
    • google
      Password icon
      I agree to the terms of service
      Signed in as (Sign out)
      You have left! (?) (thinking…)
      0 comments  ·  Flag idea as inappropriate…  ·  Admin →
    • Geometric Problems - Like Adjacent Points

      Where's the namespace for geometric problems?

      1 vote
      Vote
      Sign in
      Check!
      (thinking…)
      Reset
      or sign in with
      • facebook
      • google
        Password icon
        I agree to the terms of service
        Signed in as (Sign out)
        You have left! (?) (thinking…)
        0 comments  ·  Flag idea as inappropriate…  ·  Admin →
      • 3 votes
        Vote
        Sign in
        Check!
        (thinking…)
        Reset
        or sign in with
        • facebook
        • google
          Password icon
          I agree to the terms of service
          Signed in as (Sign out)
          You have left! (?) (thinking…)
          0 comments  ·  Flag idea as inappropriate…  ·  Admin →
        • 12 votes
          Vote
          Sign in
          Check!
          (thinking…)
          Reset
          or sign in with
          • facebook
          • google
            Password icon
            I agree to the terms of service
            Signed in as (Sign out)
            You have left! (?) (thinking…)
            1 comment  ·  Flag idea as inappropriate…  ·  Admin →
          • support infinite precision

            I really love the infinite precision feature of Google's Android Calculator. If you enter a number like π, e, φ, √2, √3, √5, etc., you can scroll to the right to get an infinite number of digits.

            Such calculations should be supported by Math.NET Numerics, where results can get queried to get more (decimal) digits. Something like an IEnumerable<DecimalDigit> interface.

            1 vote
            Vote
            Sign in
            Check!
            (thinking…)
            Reset
            or sign in with
            • facebook
            • google
              Password icon
              I agree to the terms of service
              Signed in as (Sign out)
              You have left! (?) (thinking…)
              0 comments  ·  Flag idea as inappropriate…  ·  Admin →
            • 1 vote
              Vote
              Sign in
              Check!
              (thinking…)
              Reset
              or sign in with
              • facebook
              • google
                Password icon
                I agree to the terms of service
                Signed in as (Sign out)
                You have left! (?) (thinking…)
                0 comments  ·  Flag idea as inappropriate…  ·  Admin →
              • Performance increase using structs instead of classes?

                Hi,
                First, congratulations for this ongoing work! I came to Math.Net after attempting to create my own libraries, so here is an idea which my be of a help.

                The idea would be to use Structs to define matrices instead of Classes to improve performance.

                As mentioned above, I did a check with a homemade matrix class and another one being a matrix struct, and for matrices up to 5000X5000 structs are circa 10 times faster for matrix multiplication.

                I compared Math.Net with MKL against matlab and it appears to be circa 2 times slower for such matrix sizes. This…

                9 votes
                Vote
                Sign in
                Check!
                (thinking…)
                Reset
                or sign in with
                • facebook
                • google
                  Password icon
                  I agree to the terms of service
                  Signed in as (Sign out)
                  You have left! (?) (thinking…)
                  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                • PCG Random support

                  Implement support for the PCG random routine as specified here:
                  PCG, A Family of Better Random Number Generators
                  http://www.pcg-random.org/

                  6 votes
                  Vote
                  Sign in
                  Check!
                  (thinking…)
                  Reset
                  or sign in with
                  • facebook
                  • google
                    Password icon
                    I agree to the terms of service
                    Signed in as (Sign out)
                    You have left! (?) (thinking…)
                    0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                  • Histogram should allow custom bucket definition

                    The existing constructors of the Histogram function allow for a defined number of buckets or a defined number of buckets with a lower and upper bound. It is also useful to specifically define the buckets. For example, I need to do a histogram of a double[] array in increments of 0.5.

                    1 vote
                    Vote
                    Sign in
                    Check!
                    (thinking…)
                    Reset
                    or sign in with
                    • facebook
                    • google
                      Password icon
                      I agree to the terms of service
                      Signed in as (Sign out)
                      You have left! (?) (thinking…)
                      0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                    • Vector Autoregression

                      I am a finance professional who is currently using python to run vector autogression. I would prefer to implement in a .NET stack.

                      The python library is called statstools and there is a similar package in R called VAR.

                      https://github.com/statsmodels/statsmodels/blob/master/docs/source/vector_ar.rst#id5

                      I am happy to get involved in adding this feature but may need support.

                      1 vote
                      Vote
                      Sign in
                      Check!
                      (thinking…)
                      Reset
                      or sign in with
                      • facebook
                      • google
                        Password icon
                        I agree to the terms of service
                        Signed in as (Sign out)
                        You have left! (?) (thinking…)
                        0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                      • Implement 2D FFT

                        Extend the FFT class to allow for 2d array. Use MKL to accelerate this.

                        11 votes
                        Vote
                        Sign in
                        Check!
                        (thinking…)
                        Reset
                        or sign in with
                        • facebook
                        • google
                          Password icon
                          I agree to the terms of service
                          Signed in as (Sign out)
                          You have left! (?) (thinking…)
                          started  ·  1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                        • Fix a dimensionality bug in the SparseMatrix solve method

                          I am using the solve method on a DenseMatrix and two vectors. When I try to use the same method but with a SparseMatrix, I get a dimensionality error saying that all vectors must be the same dimensions.

                          I believe the method asserts that the input vector is of the same length as the matrix's number of columns, and probably should check against the matrix's number of rows.

                          2 votes
                          Vote
                          Sign in
                          Check!
                          (thinking…)
                          Reset
                          or sign in with
                          • facebook
                          • google
                            Password icon
                            I agree to the terms of service
                            Signed in as (Sign out)
                            You have left! (?) (thinking…)
                            0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                          • estimate

                            I love the Estimate function on some of the distributions in the statistical namespace. Chould we try to expand it to be included in IDistribution or IContinuousDistribution and all distributions. I have the code for some more.

                            1 vote
                            Vote
                            Sign in
                            Check!
                            (thinking…)
                            Reset
                            or sign in with
                            • facebook
                            • google
                              Password icon
                              I agree to the terms of service
                              Signed in as (Sign out)
                              You have left! (?) (thinking…)
                              planned  ·  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                            • Introduce support for homogeneous coordinates

                              The usage of homogeneous coordinates is quite natural.in drawing software, so support for vector manipulations using homogeneous coordinates would be intersting.

                              4 votes
                              Vote
                              Sign in
                              Check!
                              (thinking…)
                              Reset
                              or sign in with
                              • facebook
                              • google
                                Password icon
                                I agree to the terms of service
                                Signed in as (Sign out)
                                You have left! (?) (thinking…)
                                0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                              • implement a machine learning library

                                For modern datascience we need machine learning. Hence for .NET a modern machine learning library would be very welcome, especially one with a good F# interface. It should contain the most used standard algorithms & models like

                                - clustering: k-means, spectral clustering, kernel k-means, gaussian mixture, ...
                                - classification & regression: (regularized) generalized linear models , neural networks (classic & deep learning), kernel models (SVM, kernel logistic regression,...), probabilistic (max likelihood) & Bayesian methods/graphical models/gaussian processes, decision trees & random forests,...
                                - ensemble methods (bagging, boosting,...)
                                - dim reduction (SVD, kernel SVD, manifold learning, sparse representations (L1 regularization),...)
                                - probabilistic…

                                33 votes
                                Vote
                                Sign in
                                Check!
                                (thinking…)
                                Reset
                                or sign in with
                                • facebook
                                • google
                                  Password icon
                                  I agree to the terms of service
                                  Signed in as (Sign out)
                                  You have left! (?) (thinking…)
                                  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                • Implement the Gumbel ContinuousDistribution

                                  Implement the Gumbel ContinuousDistribution

                                  2 votes
                                  Vote
                                  Sign in
                                  Check!
                                  (thinking…)
                                  Reset
                                  or sign in with
                                  • facebook
                                  • google
                                    Password icon
                                    I agree to the terms of service
                                    Signed in as (Sign out)
                                    You have left! (?) (thinking…)
                                    0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                  • 1 vote
                                    Vote
                                    Sign in
                                    Check!
                                    (thinking…)
                                    Reset
                                    or sign in with
                                    • facebook
                                    • google
                                      Password icon
                                      I agree to the terms of service
                                      Signed in as (Sign out)
                                      You have left! (?) (thinking…)
                                      0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                    • add a distributed multidimensional array type (or at least matrix)

                                      Languages like Fortran 2008, Julia & Spark framework have a distributed array type. This allows to describe distributed algorithms in a natural way close to the underlying mathematics instead in a convoluted way (map reduce like Hadoop). I'd like to have the same in .NET.

                                      3 votes
                                      Vote
                                      Sign in
                                      Check!
                                      (thinking…)
                                      Reset
                                      or sign in with
                                      • facebook
                                      • google
                                        Password icon
                                        I agree to the terms of service
                                        Signed in as (Sign out)
                                        You have left! (?) (thinking…)
                                        0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                      • 10 votes
                                        Vote
                                        Sign in
                                        Check!
                                        (thinking…)
                                        Reset
                                        or sign in with
                                        • facebook
                                        • google
                                          Password icon
                                          I agree to the terms of service
                                          Signed in as (Sign out)
                                          You have left! (?) (thinking…)
                                          0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Please consider implementing excel functions PPMT,IPMT,PMT,CUMIPMT,CUMPRINC

                                          These are the financial functions used by banks. The applications using math.net will be more richer if it can have below functions PPMT,IPMT,PMT,CUMIPMT,CUMPRINC

                                          4 votes
                                          Vote
                                          Sign in
                                          Check!
                                          (thinking…)
                                          Reset
                                          or sign in with
                                          • facebook
                                          • google
                                            Password icon
                                            I agree to the terms of service
                                            Signed in as (Sign out)
                                            You have left! (?) (thinking…)
                                            0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                          ← Previous 1 3
                                          • Don't see your idea?

                                          Math.NET Numerics

                                          Feedback and Knowledge Base