Patricia Brent Nathan David Green Paul Breimyer Ramya Krishnamurthy Nagiza F. Samatova Systematic Evaluation of Convergence Criteria in Iterative Training for NLP. 2009 FLAIRS Conference conf/flairs/2009 db/conf/flairs/flairs2009.html#BrentGBKS09 http://aaai.org/ocs/index.php/FLAIRS/2009/paper/view/45