public Map<String, TokenFilterFactory> getDefaultRegistry(){
Map<String, TokenFilterFactory> registry = new HashMap<String, TokenFilterFactory>();
registry.put(ADDITION_FILTER_FACTORY_NAME, new AdditionFilterFactory());
registry.put(HYPERNYM_FILTER_FACTORY_NAME, new HypernymFilterFactory(new MultimapFileReaderFactory()));
registry.put(POSITION_FILTER_FACTORY_NAME, new PositionFilterFactory());
registry.put(REPLACE_FILTER_FACTORY_NAME, new ReplaceFilterFactory(new MapFileReaderFactory()));
registry.put(SNOWBALL_FILTER_FACTORY_NAME, new SnowballFilterFactory());
registry.put(SPLITTER_FILTER_FACTORY_NAME, new SplitterFilterFactory());
registry.put(CONCAT_FILTER_FACTORY_NAME, new ConcatFilterFactory());
registry.put(STOPWORD_FILTER_FACTORY_NAME, new StopwordFilterFactory(new PlainFileReaderFactory()));
registry.put(UNIQUE_FILTER_FACTORY_NAME, new UniqueFilterFactory());