ARTICLE collobert:2003:ijprai/IDIAP Scaling Large Learning Problems with Hard Parallel Mixtures Collobert, Ronan Bengio, Yoshua Bengio, Samy EXTERNAL http://publications.idiap.ch/attachments/reports/2003/collobert_2003_ijprai.pdf PUBLIC International Journal on Pattern Recognition and Artificial Intelligence (IJPRAI) 17 3 349-365 2003