Questions about sparse-matrix
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Sparse matrix multiplication in R: error in Ubuntu, flawless in Windows
The CRAN Matrix package can be used to multiply a column vector by its transpose:
product <- Matrix::t(dtm.t) %*% dtm.t
where dtm.t is a column vector created from a Document Term Matrix.
When I r...
arko bose
Votes: 0
Answers: 0
How can I get a large suqare matrix from two distinct columns in R
I have a long large matrix R, which dim is (6300000,5),
OriR
CHR_A BP_A SNP_A CHR_B BP_B SNP_B R
1 22 16057417 rs62224618 22 16287538 Affx-52233492 -0.0020153...
lele
Votes: 0
Answers: 0
Represent a tridiagonal sparse matrix in column major order
Main Question:-
If the elements in the band formed by the three diagonals of a tridiagonal matrix X are represented column-wise in an array Y, with X[1,1] being stored in Y[1], then write an algorithm...
hamza hasan
Votes: 0
Answers: 2
Clustering binary image using sparse matrix representation
I have seen this question on StackOverflow, and I do want to solve the problem of clustering binary images such as this one from the same abovementioned question using sparse matrix representation:
I...
Bilal
Votes: 0
Answers: 1