We describe the CoNLL-2003 shared task: language-independent named entity recognition. We give background information on the data sets (English and German) and the evaluation method, present a general overview of the systems that have taken part in the task and discuss their performance.
['Erik F. Tjong Kim Sang', 'Fien De Meulder']
Introduction to the CoNLL-2002 shared task: language-independent named entity recognition