[MAHOUT-1725] elementwise power operator ^

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.10.2
• Assignee: Dmitriy Lyubimov
• Reporter: Dmitriy Lyubimov
• Created: 02/Jun/15 23:31
• Updated: 07/Aug/15 15:56
• Resolved: 17/Jun/15 19:00

Description

this is a power elementwise operation on in-core and out-of-core tensor types. it is only defined on (tensor-type, Double) pair. This is consistent with R caret operator.

e.g. computing distance between two points(vectors) x and y:

sqrt((x-y) ^= 2 sum)

Danger is that for integral types in Scala interpret this as exclusive or, which is something completely different altogether .