HeadRules rules = new opennlp.tools.parser.lang.en.HeadRules(
new InputStreamReader(new FileInputStream(params.getHeadRules()),
params.getEncoding()));
ParserType type = parseParserType(params.getParserType());
if (mlParams == null) {
if (ParserType.CHUNKING.equals(type)) {
model = opennlp.tools.parser.chunking.Parser.train(
params.getLang(), sampleStream, rules,