[MATH-1132] NaN transformation based on NaNStrategy

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 3.3
• Fix Version/s: 3.4
• Assignee: Unassigned
• Reporter: Venkatesha Murthy TS
• Created: 27/Jun/14 03:38
• Updated: 26/Dec/14 19:50
• Resolved: 16/Dec/14 19:07

Description

The NaNs in a double array may need to be transformed to either +/- Infinity or removed before processing them(say such as in percentile).
So basically from documenting angle; we will need to action as follows:
Whenever a double quantity is a NaN (say in an array); based on the NanStrategy; it needs to be treated as follows before processing:
a) MAXIMAL -> replace with +infinity
b) MINIMAL -> replace with -Inifinity
c) REMOVED -> just remove it
d) FIXED -> Leave it as it is
e) FAILED -> throw a NaN exception
Can this documentation be specifically added to NaNStrategy and perhaps a substitution value also can be added to enforce the documentation.

In addition i will also submit a patch for a simple NaNTransformer implementation.