[MAHOUT-1217] Nearest neighbor searchers sometimes fail to remove points

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8
• Fix Version/s: 0.8
• Component/s: classic
• Assignee: Unassigned
• Reporter: Dan Filimon
• Created: 16/May/13 17:27
• Updated: 31/Jan/24 22:16
• Resolved: 20/May/13 08:35

Description

When updating a Centroid in StreamingKMeans, the Centroid needs to be removed and its updated version added.

When removing points in a searcher that are already there, sometimes the searcher fails to return the closest point (the one being searched for) causing a RuntimeException.

This has been observed for TF-IDF vectors with SquaredEuclideanDistance and CosineDistance and FastProjectionSearch.