Useful codes
Semi-supervised learning:
Manifold Regularization: http://manifold.cs.uchicago.edu/manifold_regularization/software.html
Similarity Graph Demo: http://www.ml.uni-saarland.de/GraphDemo/GraphDemo.html
Maeximum Variance Unfolding : http://www.cse.wustl.edu/~kilian/code/code.html
Spectral Graph Transducer: http://sgt.joachims.org/
SemiL: http://www.learning-from-data.com/te-ming/semil.htm
Harmonic Function: http://pages.cs.wisc.edu/~jerryzhu/pub/harmonic_function.m
Active Semi-supervised learning: http://www.cs.cmu.edu/~zhuxj/pub/semisupervisedcode/active_learning/
Nonparametric Transforms of Graph Kernel: http://pages.cs.wisc.edu/˜jerryzhu/pub/nips04.tgz