[SPARK-1553] Support alternating nonnegative least-squares

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Implemented
• Affects Version/s: 0.9.0
• Fix Version/s: 1.1.0
• Component/s: MLlib
• Assignee: Tor Myklebust
• Reporter: Tor Myklebust
• Created: 21/Apr/14 16:18
• Updated: 02/Jun/14 18:49
• Resolved: 02/Jun/14 18:49

Description

There's already an ALS implementation. It can be tweaked to support nonnegative least-squares by conditionally running a nonnegative least-squares solve instead of a least-squares solver.