Why doesn\'t a model matrix necessarily have the same number of rows as the data frame? mergem = model.matrix(as.formula(paste(response, \'~ .\')), data=mer开发者_如何学运维gef)
A third party algorithm that I\'m using is creating the following matrix 355,78 :-12,33 :,02 :,02 | |39,69 :378,26 :,08 :,08 |
If I开发者_如何学编程 have n vectors of length m and want to join them to create an mxn matrix, what is the most efficient way to do this in C++ using Boost uBLAS?
this is my code for my two dimensional table. What I want to do is that I put my input on the correct spot - But as you can see, my output of the table is not as it should be. The columns are overlap
I have 3D matrix (10000 x 60 x 20) and I need to permute 2nd and 3rd dimensions keeping the columns intact.
I want to calculate covari开发者_C百科ance matrix using Java. Is there any free library to compute covariance Matrix in Java?Here is a short example, how you can create it with Apache Commons Math (3
I am learning GLSL by going through a tutorial on the Web. The tutorial has an example called the Toon Shading. Here is the link to Toon Shading - Version I.
I have a 4-dimensional dictionary I made with a Python script for a data mining project I\'m working on, and I want to read the data into Matlab to do some statistical tests on the data.
I have a matrix of data which looks like: date ticker return 2/1MSFT.21 2/1GOOG.11 2/1CSCO.09 2/2MSFT.22 2/2GOOG.19
Ok, this is a very easy question for which I could not find the solution here; I have two lists A and B
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