[MAHOUT-1719] Unary elementwise function operator and function fusions

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.10.2
• Assignee: Dmitriy Lyubimov
• Reporter: Dmitriy Lyubimov
• Created: 02/Jun/15 23:10
• Updated: 07/Aug/15 15:56
• Resolved: 17/Jun/15 19:00

Description

optimizer rewrites for something like 1 + drmX * dexp(drmX) => collapse into elementwiseFunc(f1(f2(drmX)) where f1 = 1 + x and f2 = exp. Also absolutes current scalar-elementwise physical operators used for stull like 1+drmX .

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