@inproceedings{2168, title = {Semi-Supervised Learning through Principal Directions Estimation}, author = {Chapelle, O. and Sch{\"o}lkopf, B. and Weston, J.}, journal = {ICML Workshop, The Continuum from Labeled to Unlabeled Data in Machine Learning & Data Mining}, pages = {7}, organization = {Max-Planck-Gesellschaft}, school = {Biologische Kybernetik}, year = {2003}, doi = {} }