Skip to main content
Cross Validated

You are not logged in. Your edit will be placed in a queue until it is peer reviewed.

We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.

Required fields*

8
  • 6
    $\begingroup$ Possible duplicate of What is the root cause of the class imbalance problem? $\endgroup$ Commented Jun 2, 2017 at 14:04
  • 2
    $\begingroup$ @MatthewDrury thanks, this is an interesting question, but IMHO, it has a different scope. What I'm asking is for guidelines when this is really a problem. Surely answering the why question leads to answering the when question, but I'm looking for precise answer for the when question. $\endgroup$ Commented Jun 2, 2017 at 14:12
  • 18
    $\begingroup$ Fair enough! I'm with you. The "literature" on this seems to be all about how to fix a problem, without bothering to convince you that there is in fact a problem to be solved, or even telling you in what situations a problem occurs or not. One of the most frustrating parts of the subject for me. $\endgroup$ Commented Jun 2, 2017 at 14:39
  • 5
    $\begingroup$ @MatthewDrury that is exactly the problem! $\endgroup$ Commented Jun 2, 2017 at 14:43
  • 3
    $\begingroup$ A total survey of methods is not within the scope of an SE question. Do you want to refine the question? $\endgroup$ Commented Jun 7, 2017 at 16:02