New Post: Using 3.0 alpha in production
I think the tag "alpha" has a well known meaning in computing? To quote http://en.wikipedia.org/wiki/Software_release_life_cycle#Alpha"The alpha phase of the release life cycle is the first phase to...
View ArticleNew Post: Matrix vs DenseMatrix
Hi, I am very new to .net and math.net. I have a curiosity that would help me understand the some design choices: Why .Inverse() and .Transpose() have not been passed along to the specialized classes...
View ArticleNew Post: Non-linear least squares?
Hi Christoph, Have forked and I think new code is about complete enough to ask a maintainer to take a look (bunch of decisions to make but thought it would be easier to put something in place as a...
View ArticleNew Post: Beta CDF function
How can I calculate the cdf of a beta distribution? I can see that the Normal distribution has a InverseCumulativeDistribution member but not Beta. Is there a reason for that? Thanks, Christian
View ArticleNew Post: Beta CDF function
Nevermind the correct function is: CumulativeDistribution Sorry for the noise and thanks a lot for this project!!
View ArticleNew Post: Beta CDF function
In v3 there's also a static Beta.CDF(alpha, beta, x) function that is a bit easier to use in some scenarios.
View ArticleNew Post: Non-linear least squares?
Great! Yes, a pull request at GitHub would work well, to discuss it and coordinate the next step - and of course to actually pull it. Thanks, Christoph
View ArticleNew Post: Matrix vs DenseMatrix
I'm not sure I understand your question. Both Inverse and Transpose are defined in the generic base class Matrix<T> and thus are automatically inherited by all sub-classes (even though some...
View ArticleNew Post: Using 3.0 alpha in production
Thanks Don! With RankCorrelation you're referring to Correlation.Spearman? If yes, I had a quick look at the implementation and believe we can make it significantly faster with a few changes. Even more...
View ArticleNew Post: Refactor vector and matrix classes?
Hi Ethar, Thanks for the explanation! I remember there used to be a significant performance degradation with this approach, although things may have changed with newer .Net releases. We should run some...
View ArticleNew Post: SparseMatrix does not contain a definition 'LU'
Hi to all, I am having a problem with the solvers provided in MathNet. Let me explain what I am trying to do, I have a very big non-square sparse matrix (five non-zeroes per row), of a size of...
View ArticleNew Post: Beta CDF function
cdrnet wrote: In v3 there's also a static Beta.CDF(alpha, beta, x) function that is a bit easier to use in some scenarios. Thanks, this is great!
View ArticleNew Post: SparseMatrix does not contain a definition 'LU'
Hi, While it is technically possible to go for a direct solver/factorization, for a matrix of this size (~1.8 GB) this is currently only feasible in practice (if at all) when using our native MKL...
View ArticleNew Post: special function
hi to all，I just want to know that does this program plan to add special function，just like bessel function？
View ArticleNew Post: special function
It already does provide Bessel functions, see SpecialFunctions - although not the full set. Is there one you're missing? Thanks, Christoph
View ArticleNew Post: special function
sorry, you are right, I miss it. and the website link you give me just I find the real number‘ special function, so Does this program plan to add some bessel function about complex，just like...
View ArticleNew Post: special function
cdrnet wrote: It already does provide Bessel functions, see SpecialFunctions - although not the full set. Is there one you're missing? Thanks, Christoph sorry, you are right, I miss it. and the website...
View ArticleNew Post: How to do a weighted polynomial fit?
Using Fit.Polynomial() works quite well for non-weighted fitting. I'm translating some python/scipy code that uses optimize.curve_fit() with relative weights (sigma). I saw that there is...
View Article