... splitinto a train part and a devtest part. For the trainpart, there are 76, 13 0 and 217 articles in NPA-PER, NWIRE and BNEWS respectively while forthe test part, there are 17 , 29 and 51 articles ... Factorial Hidden Markov ModelFactorial Hidden Markov Models are an extensionof HMMs (Ghahramani and Jordan, 19 97). HMMsrepresent sequential data as a sequence of hiddenstates generating observation ... page 12 7. Association for Com-putational Linguistics. 11 78Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics, pages 11 69 11 78,Portland, Oregon, June 19 -24,...