[HIVEMALL-127] Create tree_predict_v1 for RandomForest model backward compatibility

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.5.0
• Assignee: Makoto Yui
• Reporter: Makoto Yui
• Created: 05/Jul/17 05:14
• Updated: 09/Nov/17 03:33
• Resolved: 20/Jul/17 08:25

Description

RandomForest model representation has been changed between hivemall v0.5-rc.1 and v0.4.2-rc.2.

Prediction model built on v0.4.2-rc.2 or before cannot be used for v0.5-rc.1 or later.

So, it's better to ensure backward compatibilities of prediction models, built previously to v0.5-rc.1 release.

We are considering to provide tree_predict_v1 for the backward compatibility.

Issue Links

• blocks: HIVEMALL-21 [Umbrella] Release Hivemall v0.5.0
• is related to: HIVEMALL-75 Support Sparse Vector Format as the input of RandomForest
• relates to: HIVEMALL-128 Include version information is the prediction model built by RandomForest to support prediction for each version
• links to: GitHub Pull Request #102