[SPARK-6278] Mention the change of step size in the migration guide

• Type: Documentation
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.0
• Fix Version/s: 1.3.1, 1.4.0
• Component/s: Documentation, MLlib
• Target Version/s: 1.3.1, 1.4.0
• Assignee: Xiangrui Meng
• Reporter: Xiangrui Meng
• Created: 11/Mar/15 07:38
• Updated: 13/Mar/15 17:27
• Resolved: 13/Mar/15 17:27

Description

We changed the objective from 1/n .. to 1/(2n) ... in 1.3, so using the same step size will lead to different results.

Issue Links

• links to: [Github] Pull Request #4978 (mengxr)