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Created April 18, 2013 20:48
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ALS Testing patch
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gistfile1.txt
Index: core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/svd/ALSWRFactorizer.java
===================================================================
--- core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/svd/ALSWRFactorizer.java (Revision 1469532)
+++ core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/svd/ALSWRFactorizer.java (Arbeitskopie)
@@ -173,6 +173,7 @@
}
for (int iteration = 0; iteration < numIterations; iteration++) {
+ long start = System.currentTimeMillis();
log.info("iteration {}", iteration);
/* fix M - compute U */
@@ -249,6 +250,7 @@
log.warn("Error when computing item features", e);
}
}
+ System.out.println(System.currentTimeMillis() - start);
}
log.info("finished computation of the factorization...");
Index: core/src/main/java/org/apache/mahout/cf/taste/hadoop/als/Testing.java
===================================================================
--- core/src/main/java/org/apache/mahout/cf/taste/hadoop/als/Testing.java (Revision 0)
+++ core/src/main/java/org/apache/mahout/cf/taste/hadoop/als/Testing.java (Revision 0)
@@ -0,0 +1,21 @@
+package org.apache.mahout.cf.taste.hadoop.als;
+
+import org.apache.mahout.cf.taste.impl.model.file.FileDataModel;
+import org.apache.mahout.cf.taste.impl.recommender.svd.ALSWRFactorizer;
+
+import java.io.File;
+
+public class Testing {
+
+ public static void main(String[] args) throws Exception {
+
+ FileDataModel dataModel = new FileDataModel(new File("/home/ssc/Entwicklung/datasets/movielens1M/movielens.csv"));
+
+ ALSWRFactorizer factorizer = new ALSWRFactorizer(dataModel, 100, 0.065, 8);
+
+ factorizer.factorize();
+
+
+ }
+
+}
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