Hello all, I am trying to use WordnetSynonymParser in Lucene 4.4.0 to parse the WordNet prolog file. I need to pass an analyzer to the WordnetSynonymParser constructor. If I pass the StandardAnalyzer I get:
Exception in thread "main" java.text.ParseException: Invalid synonym rule at line 109 at org.apache.lucene.analysis.synonym.WordnetSynonymParser.add(WordnetSynonymParser.java:75) at wordnetdirect404.WordNetDirect404.main(WordNetDirect404.java:43) Caused by: java.lang.IllegalArgumentException: term: course of action analyzed to a token with posinc != 1 at org.apache.lucene.analysis.synonym.SynonymMap$Builder.analyze(SynonymMap.java:125) at org.apache.lucene.analysis.synonym.WordnetSynonymParser.parseSynonym(WordnetSynonymParser.java:92) at org.apache.lucene.analysis.synonym.WordnetSynonymParser.add(WordnetSynonymParser.java:67) ... 1 more I've googled a bit and this has maybe got something to do with SynonymFilter and "This token stream cannot properly handle position increments != 1, ie, you should place this filter before filtering out stop words."? If I build my own Analyzer, composed of ClassicTokenizer, ClassicFilter and LowerCaseFilter and pass this my own Analyzer to WordnetSynonymParser constructor then it works okay....... except my WordNet enriched Lucene index built with my WordNet-enabled Analyzer is spewing totally wrong results... Which Analyzer should I use to pass to WordnetSynonymParser constructor, and does someone have a good example of WordnetSynonymParser usage, for instance to build a Lucene index enriched with WordNet synonyms or a WordNet expanded query? Regards, Grelick
