case classDColWiseMatrix[Elem, T](data: DList[(Elem, Iterable[(Elem, T)])]) extends Product with Serializable
A col-wise matrix. This is an efficient representation for multiplying by an in-memory vector. The contents of each column
must be small enough to fit in memory
Linear Supertypes
Serializable, Serializable, Product, Equals, AnyRef, Any
A col-wise matrix. This is an efficient representation for multiplying by an in-memory vector. The contents of each column must be small enough to fit in memory