Check examples/bin/cluster_reuters.sh for kmeans (it exists in Mahout 0.7 too
:))
You need to specify the clustering option -cl in your kmeans command.
________________________________
From: Marco <zentrop...@yahoo.co.uk>
To: "user@mahout.apache.org" <user@mahout.apache.org>
Sent: Thursday, August 1, 2013 9:55 AM
Subject: k-means issues
So I've got 13000 text files representing topics in certain newspaper articles.
Each file is just a tab-separated list of topics (so something like "china
japan senkaku dispute" or "italy lampedusa immgration").
I want to run k-means clusteriazion on them.
Here's what I do (i'm actually doing it on a subset of 100 files):
1) run seqdirectory to produce sequence file from raw text files
2) run seq2sparse to produce vectors from sequence file
(if i do seqdumper on tfidf-vectors/part-r-00000 i get something like
Key: /filename1: Value: /filename1:{72:0.7071067811865476,0:0.7071067811865476}
and if i do it on dictionary.fie-0 i get
Key class: class org.apache.hadoop.io.Text Value Class: class
org.apache.hadoop.io.IntWritable
Key: china: Value: 0
Key: japan: Value: 1
3) i run k-means (mahout kmeans -i mahout/vectors/tfidf-vectors/ -k 10 -o
mahout/kmeans-clusters -dm
org.apache.mahout.common.distance.CosineDistanceMeasure -x 10 --clusters
mahout/tmp)
first thing i notice here is it logs:
INFO kmeans.KMeansDriver: convergence: 0.5 max Iterations: 10 num Reduce Tasks:
org.apache.mahout.math.VectorWritable Input Vectors: {}
the "Input Vectors: {}" part puzzles me.
Even worse, this doesn't seem to create the clusteredPoints directory at all.
What am I doing wrong?
