[MAHOUT-763] Map-Side Distance Comparison

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.6
• Assignee: Grant Ingersoll
• Reporter: Grant Ingersoll
• Created: 14/Jul/11 17:20
• Updated: 09/Feb/12 14:01
• Resolved: 02/Aug/11 21:19

Description

KMeans currently on the map-side calculates the distance between a set of seeds and all other vectors. It would be handy to have a generalization of this that, given a set of vectors that fits in memory (the seeds) and other points, emit <seed id, other id, distance> according to the distance measure. This is similar to the RowSimilarityJob, but much simpler and not as general purpose.