《CNTS - Language Technology Group》.pdfVIP

Introduction to the CoNLL-2003 Shared Task: Language-Independent Named Entity Recognition Erik F. Tjong Kim Sang and Fien De Meulder CNTS - Language Technology Group University of Antwerp {erikt,fien.demeulder}@uia.ua.ac.be Abstract of the 2003 shared task have been offered training and test data for two other European languages: We describe the CoNLL-2003 shared task: English and German. They have used the data language-independent named entity recog- for developing a named-entity recognition system nition. We give background information on that includes a machine learning component. The the data sets (English and German) and shared task organizers were especially interested in the evaluation method, present a general approaches that made use of resources other than overview of the systems that have taken the supplied training data, for example gazetteers part in the task and discuss their perfor- and unannotated data. mance. 2 Data and Evaluation 1 Introduction In this section we discuss the sources of the data that were used in this shared task, the preprocessing Named entities are phrases that contain the names steps we have performed on the data, the format of of persons, organizations and locations. Example: the data and the method that was used for evaluating