[HIVEMALL-151] Support Matrix conversion from DoK to CSR/CSC matrix

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.5.0
• Assignee: Makoto Yui
• Reporter: Makoto Yui
• Created: 04/Oct/17 06:17
• Updated: 09/Nov/17 03:33
• Resolved: 16/Oct/17 12:05

Description

Scipy support efficient matrix type conversions. Support this kind of Matrix-type conversions.

https://github.com/scipy/scipy/blob/v0.14.0/scipy/sparse/dok.py#L467
https://github.com/scipy/scipy/blob/2526df72e5d4ca8bad6e2f4b3cbdfbc33e805865/scipy/sparse/sparsetools/coo.h#L34
https://github.com/scipy/scipy/blob/88587230d56b17bcd397e10321c65c87c27ac491/scipy/sparse/compressed.py#L859

Issue Links

• is related to: HIVEMALL-17 Support SLIM for Top-K Recommendation of Implicit Feedback Dataset
• links to: GitHub Pull Request #121