Which version of naivebayes are you using? bayes.* package or naivebayes.* ?
Former uses text input. Latter one uses vectors. On Tue, Jul 12, 2011 at 7:59 PM, kevin_ravel <ke...@raveldata.com> wrote: > I'm a little confused as to the proper way to format the data for training > a > naive bayes classifier. Is it possible to give the classifier tfidf-vectors > generated using the results from seq2sparse? I have arranged it so that I > have a sequence file where the key is the target variable and the value is > a > tfidf vector. When I use this as the input to trainclassifier I get the > following error: > > Running on hadoop, using HADOOP_HOME=/home/kevin/Hadoop/hadoop-0.20.2/ > No HADOOP_CONF_DIR set, using /home/kevin/Hadoop/hadoop-0.20.2//src/conf > 11/07/12 09:27:13 WARN driver.MahoutDriver: No trainclassifier.props found > on classpath, will use command-line arguments only > 11/07/12 09:27:13 INFO bayes.TrainClassifier: Training Bayes Classifier > 11/07/12 09:27:13 INFO bayes.BayesDriver: Reading features... > 11/07/12 09:27:13 WARN mapred.JobClient: Use GenericOptionsParser for > parsing the arguments. Applications should implement Tool for the same. > 11/07/12 09:27:14 INFO mapred.FileInputFormat: Total input paths to process > : 1 > 11/07/12 09:27:14 INFO mapred.JobClient: Running job: job_201107120921_0001 > 11/07/12 09:27:15 INFO mapred.JobClient: map 0% reduce 0% > 11/07/12 09:27:24 INFO mapred.JobClient: Task Id : > attempt_201107120921_0001_m_000000_0, Status : FAILED > java.lang.RuntimeException: Error in configuring object > at > org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93) > at > org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64) > at > > org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117) > at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:354) > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307) > at org.apache.hadoop.mapred.Child.main(Child.java:170) > Caused by: java.lang.reflect.InvocationTargetException > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88) > ... 5 more > > > Thanks > > -- > View this message in context: > http://lucene.472066.n3.nabble.com/Using-tf-idf-vectors-to-train-Naive-Bayes-tp3162590p3162590.html > Sent from the Mahout User List mailing list archive at Nabble.com. >
