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Statistiques

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The most efficient way to add a new column or new row to a sparse matrix
Hi, suppose I have a large scale sparse matrix A, i.e. size(A)=[100k,10k]. I am wondering, what is the most efficient way to app...

environ 7 ans il y a | 2 réponses | 0

2

réponses

Question


Which Techniques that ARIMA is using for estimating the AR and MA parameters?
Hi, Does anyone know that which techniques the ARIMA command is using for estimating the AR and MA parameters? Can anyone give m...

presque 8 ans il y a | 1 réponse | 0

0

réponse

Question


Combine cell array with contant matrices
Hi everyone, Suppose I have a cell array A{1} A{2} A{3} ... A{n}, can I create a new cell array A_{1} A_{2} A_{3} ... A_{n}...

environ 8 ans il y a | 2 réponses | 0

2

réponses

Question


Question about choosing an initial state error covariance for Kalman filter
Hi Everyone, I have a Kalman filter code from internet, which estimates states of following state space system: x(k+1)= A ...

environ 8 ans il y a | 1 réponse | 0

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réponse

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Creat a positive definite matrix, which way is better?
Hi everyone, Suppose I have a positive definite matrix P and a non-singular matrix A, I realised there is a small numerical d...

plus de 8 ans il y a | 1 réponse | 1

1

réponse

Question


How to create a square matrix with consecutive numbers on each row?
Hi everyone, Given a vector i.e. n=[1 12 25 78], is there any way to create a matrix A, such that A=[ 1 2 3 4; 11 1...

presque 9 ans il y a | 2 réponses | 0

2

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Réponse apportée
Problem of saving .fig file as .pdf file
does anyone know?

plus de 9 ans il y a | 0

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Problem of saving .fig file as .pdf file
Hi, everyone I need to save .fig file as .pdf file. Previously, I used command set(gcf,'PaperOrientation','landscape'); s...

plus de 9 ans il y a | 1 réponse | 0

1

réponse

Question


MATLAB 2014a cannot enable parpool
Hi, I tried to enable parpool in MATLAB 2014a, it gives following message Error using parpool (line 99) The operation must mod...

environ 10 ans il y a | 1 réponse | 0

1

réponse

Question


How to construct this matrix without loop?
Hi, everyone: suppose I have a vector x=[a b c d e f g h ... z]. Is it possible to construct a matrix such that: X=[a b c...

plus de 10 ans il y a | 2 réponses | 0

2

réponses

Question


How to construct this vector without loop?
Hi, everyone: I was wondering, is it possible to construct following vector without for loop? A=[1 2 3 1 2 3 4 5 6 1 2 3 4...

plus de 10 ans il y a | 3 réponses | 0

3

réponses

Question


Construct product of matrices without for loop
Hi, everyone: Suppose A is a 2 by 2 by N matrix, is it possible to construct a matrix B, such that: B=[Prod(A)_1^{N-n}...

presque 11 ans il y a | 1 réponse | 0

1

réponse

Réponse apportée
Construct Power of Matrix without for loop
Thanks very much! Do you know if A is a 2 by 2 by N matrix, can I use "arrayfun" or any other way to do: B=[A(:,:,1), A(:,...

presque 11 ans il y a | 0

Question


Construct Power of Matrix without for loop
Hi, everyone: Suppose I have a 2 by 2 matrix A, if I want construct a larger matrix B that is defined as: B=[A, A^2, A^3, ...

presque 11 ans il y a | 3 réponses | 0

3

réponses

Question


Positive Semi-definite Matrix Problem
Suppose I have a large M by N dense matrix C, which is not full rank, when I do the calculation A=C'*C, matrix A should be a pos...

presque 11 ans il y a | 2 réponses | 0

2

réponses

Question


How to parallel run 2 different functions?
Hi, everyone: Suppose I have two functions called P2 and P3, each function will run N times using for-loop and P2(t=k) requir...

environ 11 ans il y a | 1 réponse | 0

0

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How to transfer a sparse matrix into a block diagnal matrix efficiently?
Thank you very much Cedric, you are a genius and super kind!

environ 11 ans il y a | 0

Question


How to transfer a sparse matrix into a block diagnal matrix efficiently?
Hi, Everyone: Suppose I have a very large M*N sparse matrix A, where M=K*N, I need to equally split it into K N*N matrices an...

environ 11 ans il y a | 2 réponses | 0

2

réponses

Question


Large Sparse Matrix Summation
Hi, Everyone: Suppose I have a very large M*N sparse matrix A, where M=K*N, I need to equally split it into K N*N matrices a...

plus de 11 ans il y a | 2 réponses | 0

2

réponses

Question


Construct a large sparse matrix
Hi, everyone I am currently constructing a very large sparse square matrix which is made by several smaller sparse matrices, ...

plus de 11 ans il y a | 1 réponse | 0

1

réponse