[SPARK-3751] DecisionTreeRunner functionality improvement

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.2.0
• Component/s: MLlib
• Assignee: Joseph K. Bradley
• Reporter: Joseph K. Bradley
• Created: 30/Sep/14 21:30
• Updated: 01/Oct/14 08:03
• Resolved: 01/Oct/14 08:03

Description

DecisionTreeRunner functionality additions:

• Allow user to pass in a test dataset
• Do not print full model if the model is too large.

As part of this, modify DecisionTreeModel and RandomForestModel to allow printing less info. Proposed updates:

• toString: prints model summary
• toDebugString: prints full model (named after RDD.toDebugString)

Similar update to Python API:

• _repr_() now prints a model summary
• toDebugString() now prints the full model

Issue Links

• links to: [Github] Pull Request #2604 (jkbradley)