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统计学

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Cannot compile mex with openmp
Figured it out. Should be: mex CXXFLAGS="\$CXXFLAGS -std=c++11 -fopenmp" CXXOPTIMFLAGS='\$CXXOPTIMFLAGS -Ofast -DNDEBUG' LD...

7 years 前 | 1

提问

Cannot compile mex with openmp
Hello, When compiling some C++ code in Matlab 2016b using: mex CXXFLAGS="\$CXXFLAGS -std=c++11 -fopenmp" CXXOPTIMFLAGS='...

7 years 前 | 1 个回答 | 0

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Error: Activation cannot proceed. (R2014b)
Finally activated using GUI activation.

10 years 前 | 0

提问

Error: Activation cannot proceed. (R2014b)
I have installed Matlab 2014b on a node of a cluster but failed to launch the software ( |matlab14| is an alias to |/usr/local/M...

10 years 前 | 3 个回答 | 1

3

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NaNs when computing exponential and normalizing
I have an _mxn_ matrix A, with very small or very large elements. For example: A = -1e4*randn(10,20); I would like to ...

10 years 前 | 1 个回答 | 0

1

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Create this particular SPARSE matrix to solve a quadratic program
Hello everyone, I am trying to solve the following large scale quadratic program: min (1/2*x'*Q*x + c'*x) subject to x >...

11 years 前 | 1 个回答 | 0

1

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Extend a matrix by extending its vectors
I have an d*m*n matrix A (interpretation: for each n, there are m vectors of dimension d). I would like to extend each d-dimensi...

11 years 前 | 1 个回答 | 1

1

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Extend a vector by extending its elements
I have a vector of dimension d: (1,2,...,d) (it's (x_1,x_2,...,x_n) but I removed the 'x_' for simplicity). Now I would like to ...

11 years 前 | 4 个回答 | 0

4

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Operations along the first dimension of a 3D array
I have a 3D array M(d*d,m,n). For each d*d vector of M (i.e. vectors of the first dimension), I split it into d parts and take t...

11 years 前 | 1 个回答 | 0

1

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What algorithm does the function convhull use?
Hi everybody, The *convhull* function is used for computing the convex hull of a set of 2D or 3D points. In the <http://www.m...

11 years 前 | 1 个回答 | 0

1

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Finding lower convex hull in 3D
Hi everybody, Using the convhull function, one can find the convex hull of a set of 3D points (X,Y,Z): K = convhull(X,Y,...

11 years 前 | 2 个回答 | 0

2

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About manipulating very large array
Hello everybody, I have 3500 mat files that contain a 128*4408 matrix each (128 is the dimension and 4408 is the number of fe...

11 years 前 | 1 个回答 | 0

1

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std does not give good values?
Hello everybody, For this matrix M = [1 2; 3 4]; if we compute the its standard deviation std(M(:)) then we ...

11 years 前 | 1 个回答 | 0

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