tree 2d6b22024a6b7336c531c28e0c8a8f68bb793cb7
parent 04325145c94008014afde7fc802f85d6b4919106
author Sameer Agarwal <sameeragarwal@google.com> 1497305878 -0700
committer Sameer Agarwal <sameeragarwal@google.com> 1498112274 -0700

Add InnerProductComputer

Add a class that given a block sparse matrix m will compute
the product m'*m efficiently.

This code is refactoring and cleanup of the code in
CompressedRowSparseMatrix devoted to computing the inner product.

In that class, the code is mistakenly said to be computing
the outer product. It is also devoted to computing the inner
product of a CompressedRowSparseMatrix with itself.

This code works with BlockSparseMatrix objects instead, which
are simpler to deal with as they are better structured to handle
block sparse matrices.

Change-Id: I920fee1a396bb0fcae9e6f7e46a308c7391d21aa