[SPARK-21976] Fix wrong doc about Mean Absolute Error

• Type: Documentation
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 2.1.2, 2.2.1, 2.3.0
• Component/s: Documentation, MLlib
• Assignee: Favio Vázquez
• Reporter: Favio Vázquez
• Created: 11/Sep/17 13:45
• Updated: 12/Sep/17 09:34
• Resolved: 12/Sep/17 09:34

Description

Fix wrong doc for MAE in webpage.

Even though the code is correct for the MAE:

@Since("1.2.0")
  def meanAbsoluteError: Double = {
    summary.normL1(1) / summary.count
  }

In the documentation the division by n is missing.

Issue Links

• links to: [Github] Pull Request #19190 (FavioVazquez)