kevinweil/elephant-bird — pull request #174 by sagemintblue (2012-04-01 18:24:28+00:00)
Title: Refactors VectorWritableConverter to support transformation of vector data on store

Currently, vector data can be transformed on load to sparse or dense tuple
vector formats, regardless of the format of the data being loaded. However, on
store, a similar transformation could not be performed: Given sparse vector
tuple data, create and store DenseVector instances, or given dense vector tuple
data, create and store *SparseVector instances. This patch updates to allow this
type of conversion on store.