In this paper a Neural Network is designed for Part-of-Speech Tagging of Dutch text. Our approach uses the Corpus Gesproken Nederlands (CGN) consisting of almost 9 million transcribed words of spoken Dutch, divided into 15 different categories. The outcome of the design is a Neural Network with an input window of size 8 (4 words back and 3 words ahead) and a hidden layer of 370 neurons. The words ahead are coded based on the relative frequency of the tags in the training set for the word. Special attention is paid to unknown words (words not in the training set) for which such a relative frequency cannot be determined. Based on a 10-fold cross validation an approximation of the relative frequency of tags for unknown words is determined. The performance of the Neural Network is 97.35%, 97.88% on known words and 41.67% on unknown words. This is comparable to state of the art performances found in the literature. The special coding of unknown words resulted of an increase of almost 13% for the tagging of unknown words.
|Title of host publication||BNAIC 2008|
|Subtitle of host publication||Proceedings of BNAIC 2008, the twentieth Belgian-Dutch Artificial Intelligence Conference, Enschede/Bad Boekelo, October 30-31, 2008|
|Editors||Anton Nijholt, Maja Pantic, Mannes Poel, Hendri Hondorp|
|Place of Publication||Enschede|
|Publisher||Twente University Press (TUP)|
|Number of pages||8|
|Publication status||Published - 2008|
|Event||20th Benelux Conference on Artificial Intelligence, BNAIC 2008 - Boekelo, Netherlands|
Duration: 30 Oct 2008 → 31 Oct 2008
Conference number: 20
|Name||BNAIC: proceedings of the ... Belgium/Netherlands Artificial Intelligence Conference|
|Publisher||Twente University Press|
|Conference||20th Benelux Conference on Artificial Intelligence, BNAIC 2008|
|Period||30/10/08 → 31/10/08|
Poel, M., Boschman, E., & op den Akker, R. (2008). A Neural Network Based Dutch Part of Speech Tagger. In A. Nijholt, M. Pantic, M. Poel, & H. Hondorp (Eds.), BNAIC 2008: Proceedings of BNAIC 2008, the twentieth Belgian-Dutch Artificial Intelligence Conference, Enschede/Bad Boekelo, October 30-31, 2008 (pp. 217-224). (BNAIC: proceedings of the ... Belgium/Netherlands Artificial Intelligence Conference; No. 20). Enschede: Twente University Press (TUP).