conf.setInt(Constants.DocnoOffset, 0); // docnos start at 1
conf.setInt(Constants.MinDf, 2); // toss away singleton terms
conf.setInt(Constants.MaxDf, Integer.MAX_VALUE);
conf.setInt(Constants.TermIndexWindow, 8);
new BuildTermDocVectors(conf).run();
new GetTermCount(conf).run();
new BuildTermIdMap(conf).run();
new BuildIntDocVectors(conf).run();
new BuildIntDocVectorsForwardIndex(conf).run();