@article{6:59,author={Georgios Sigletos and Georgios Paliouras and Constantine D. Spyropoulos and Michalis Hatzopoulos}, Title={Combining Information Extraction Systems Using Voting and Stacked Generalization},journal={Journal of Machine Learning Research},volume={6}, url={http://www.jmlr.org/papers/volume6/sigletos05a/sigletos05a.pdf}}