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The lucene version in lucene-lda is lucene-core-3.0.2, However in solr the lucene version: lucene-core-5.3.1.

So I replace lucene-core-3.0.2 with lucene-core-5.3.1, then build an install lucene-lda. then run bin/indexDirectory test outInde outLDAInde, and I got the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/lucene/document/Fieldable at ca.queensu.cs.sail.lucenelda.IndexDirectory.main(IndexDirectory.java:159) Caused by: java.lang.ClassNotFoundException: org.apache.lucene.document.Fieldable at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 1 more