sparse matrix

Posted by Lydia Ickler on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/sparse-matrix-tp7241.html

Hi all,

I have two questions regarding sparse matrices:

1. I have a sparse Matrix: val sparseMatrix = SparseMatrix.fromCOO(row, col, csvInput.collect())

and now I would like to extract all values that are in a specific row X. How would I tackle that? flatMap() and filter() do not seem to be supported in that case.

2. I want to drop/delete one specific row and column from the matrix and therefore also reduce the dimension.

How is the smartest way to do so?

Thanks in advance!

Lydia