[MAHOUT-1721] rowSumsMap summary for non-int-keyed DRMs

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.10.2
• Assignee: Dmitriy Lyubimov
• Reporter: Dmitriy Lyubimov
• Created: 02/Jun/15 23:18
• Updated: 07/Aug/15 15:56
• Resolved: 17/Jun/15 19:00

Description

we have rowSums() that are enabled only if matrix is int-keyed (DrmLike[Int]), because non-int keys cannot be mapped to ordinal positions.

however, this api still can exist – except the output should really be Map[K,Double].

PR https://github.com/apache/mahout/pull/135