I've figured out what's the problem. I mistakenly set -dt as text, which should be sequence file.
On Apr 18, 2012, at 3:12 AM, Huanchen Zhang wrote: > Hi, > > After I've done the LDA, I'm using "mahout ldatopics" to obtain the topics, > but I get the following errors: > > Exception in thread "main" java.lang.NumberFormatException: For input string: > "SEQorg.apache.hadoop.io.Text org.apache.hadoop.io.IntWritable?I??Y??z?" > at > java.lang.NumberFormatException.forInputString(NumberFormatException.java:48) > at java.lang.Integer.parseInt(Integer.java:449) > at java.lang.Integer.parseInt(Integer.java:499) > at > org.apache.mahout.utils.vectors.VectorHelper.loadTermDictionary(VectorHelper.java:191) > at > org.apache.mahout.utils.vectors.VectorHelper.loadTermDictionary(VectorHelper.java:157) > at > org.apache.mahout.clustering.lda.LDAPrintTopics.main(LDAPrintTopics.java:121) > 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.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68) > at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139) > at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:188) > 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.RunJar.main(RunJar.java:156) > > Does anyone have some ideas? Thank you ! > > Huanchen
