For example , 10 million words of the American National Corpus ( Ide et al. , 2002 ) will have manually corrected POS tags , a tenfold increase over the Penn Treebank ( Marcus et al. , 1993 ) , currently used for training POS taggers .
building a large annotated corpus of english the penn treebank computational linguistics
Mitchell Marcus Beatrice Santorini Mary Marcinkiewicz
Some of this new data will be manually annotated . For example , 10 million words of the American National Corpus ( Ide et al. , 2002 ) will have manually corrected POS tags , a tenfold increase over the Penn Treebank ( Marcus et al. , 1993 ) , currently used for training POS taggers . This will require more efficient learning algorithms and implementations .
For example , 10 million words of the American National Corpus ( Ide et al. , 2002 ) will have manually corrected POS tags , a tenfold increase over the Penn Treebank ( @@CITATION ) , currently used for training POS taggers .