@inproceedings{lafferty2001conditional,
  acmid = {655813},
  address = {San Francisco, CA, USA},
  author = {Lafferty, John D. and McCallum, Andrew and Pereira, Fernando C. N.},
  booktitle = {Proceedings of the Eighteenth International Conference on Machine Learning},
  interhash = {574c59001ecc3aa04850e1751d96c137},
  intrahash = {180c5d6097317fa1b19ca8df75341230},
  isbn = {1-55860-778-1},
  numpages = {8},
  pages = {282--289},
  publisher = {Morgan Kaufmann Publishers Inc.},
  title = {Conditional Random Fields: Probabilistic Models for Segmenting and Labeling Sequence Data},
  url = {http://dl.acm.org/citation.cfm?id=645530.655813},
  year = 2001
}

@inproceedings{kondor02diffusionkernel,
  address = {San Francisco, CA, USA},
  author = {Kondor, Risi Imre and Lafferty, John D.},
  booktitle = {ICML '02: Proceedings of the Nineteenth International Conference on Machine Learning},
  interhash = {b96db4dbb0929f93ad3536c8f873281e},
  intrahash = {3a49cc3c52a3f5fe1474f822b3f973b0},
  isbn = {1-55860-873-7},
  pages = {315--322},
  publisher = {Morgan Kaufmann Publishers Inc.},
  title = {Diffusion Kernels on Graphs and Other Discrete Input Spaces},
  url = {http://www.cs.cmu.edu/~lafferty/pub/diffusion-kernels.ps},
  year = 2002
}