[SPARK-10736] Use 1 for all ratings if $(ratingCol) = ""

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.6.0
• Fix Version/s: 1.6.0
• Component/s: ML
• Target Version/s: 1.6.0
• Assignee: Yanbo Liang
• Reporter: Xiangrui Meng
• Created: 21/Sep/15 21:19
• Updated: 30/Sep/15 06:59
• Resolved: 30/Sep/15 06:58

Description

For some implicit dataset, ratings may not exist in the training data. In this case, we can assume all observed pairs to be positive and treat their ratings as 1. This should happen when users set ratingCol to an empty string.

Issue Links

• links to: [Github] Pull Request #8937 (yanboliang)