@inproceedings{mccallum2003conll, author = "Andrew McCallum and Wei Li", title = "Early results for Named Entity Recognition with Conditional Random Fields, Feature Induction and Web-Enhanced Lexicons", booktitle = "Proceedings of CoNLL-2003", editor = "Walter Daelemans and Miles Osborne", publisher = "Edmonton, Canada", pages = "188--191", year = "2003" }