Dear list,
I am currently working on a project that involves exporting item
similarities from a database and writing them to a
file. I am using the FileItemSimilarity class in order to read the
similarities, but i get the following:
Exception in thread "main" java.lang.IllegalArgumentException: Illegal
value: 3.0
at
com.google.common.base.Preconditions.checkArgument(Preconditions.java:119)
at
org.apache.mahout.cf.taste.impl.similarity.GenericItemSimilarity$ItemItemSimilarity.<init>(GenericItemSimilarity.java:264)
at
org.apache.mahout.cf.taste.impl.similarity.file.FileItemItemSimilarityIterator$1.apply(FileItemItemSimilarityIterator.java:48)
at
org.apache.mahout.cf.taste.impl.similarity.file.FileItemItemSimilarityIterator$1.apply(FileItemItemSimilarityIterator.java:44)
at com.google.common.collect.Iterators$9.transform(Iterators.java:845)
at
com.google.common.collect.TransformedIterator.next(TransformedIterator.java:48)
at
com.google.common.collect.ForwardingIterator.next(ForwardingIterator.java:48)
at
org.apache.mahout.cf.taste.impl.similarity.GenericItemSimilarity.initSimilarityMaps(GenericItemSimilarity.java:153)
at
org.apache.mahout.cf.taste.impl.similarity.GenericItemSimilarity.<init>(GenericItemSimilarity.java:72)
at
org.apache.mahout.cf.taste.impl.similarity.file.FileItemSimilarity.reload(FileItemSimilarity.java:124)
at
org.apache.mahout.cf.taste.impl.similarity.file.FileItemSimilarity.<init>(FileItemSimilarity.java:94)
at
org.apache.mahout.cf.taste.impl.similarity.file.FileItemSimilarity.<init>(FileItemSimilarity.java:73)
at engineclient.EngineClient.main(EngineClient.java:35)
Java Result: 1
and the Java code that produces the above stack is:
import java.io.File;
import javax.xml.namespace.QName;
import javax.xml.transform.Source;
import javax.xml.ws.Dispatch;
import javax.xml.transform.stream.StreamSource;
import javax.xml.ws.Service;
import java.io.StringReader;
import org.apache.mahout.cf.taste.impl.model.file.FileDataModel;
import org.apache.mahout.cf.taste.impl.similarity.file.FileItemSimilarity;
import org.apache.mahout.cf.taste.similarity.ItemSimilarity;
public class EngineClient {
public static void main(String[] args) throws Exception {
FileItemSimilarity simModel = new FileItemSimilarity(new
File("/home/administrator/Desktop/test_sim.csv"));
}
}
I am working with Mahout version 0.8 SNAPSHOT. Any suggestions?
Thank you
