mm {Matrix} | R Documentation |
A model matrix used in an example by Koenker and Ng. This is a sparse
matrix with 1850 rows and 712 columns but only 8758 non-zero entries.
It is a "dgCMatrix"
object.
data(mm)
Roger Koenker and Pin Ng (2003). SparseM: A sparse matrix package for R; J. of Statistical Software, 8 (6), http://www.jstatsoft.org/
data(mm) data(y) class(mm) dim(mm) str(mm) str(y) sparse.sol <- solve(crossprod(mm), crossprod(mm, y)) str(sparse.sol)