@article{CTT100582785,
  author = {Sugiyama, M. and Kanamori, T. and Suzuki, T. and Hido, S. and Sese, J. and Takeuchi, I. and Wang, L.},
  title = {A density-ratio framework for statistical data processing.},
  journal = {IPSJ Transactions on Computer Vision and Applications,},
  year = 2009,
}

@article{CTT100582880,
  author = {Kanamori, T. and Hido, S. and Sugiyama, M.},
  title = {A least-squares approach to direct importance estimation.},
  journal = {Journal of Machine Learning Research},
  year = 2009,
}

@inproceedings{CTT100599769,
  author = {Sugiyama, M. and Takeuchi, I. and Suzuki, T. and Kanamori, T. and Hachiya, H. and Okanohara, D.},
  title = {Conditional density estimation based on density ratio estimation.},
  booktitle = {IPSJSIGTechnicalReport,},
  year = 2009,
}

@inproceedings{CTT100592360,
  author = {Sugiyama, M. and Hara, S. and von Bünau, P. and Suzuki, T. and Kanamori, T. and Kawanabe, M.},
  title = {Dimensionality reduction for density ratio estimation based on Pearson divergence maximization.},
  booktitle = {},
  year = 2009,
}

@inproceedings{CTT100585251,
  author = {Kanamori, T. and Suzuki, T. and Sugiyama, M.},
  title = {Condition number analysis of kernel-based density ratio estimation.},
  booktitle = {},
  year = 2009,
}

@inproceedings{CTT100589725,
  author = {Kanamori, T. and Suzuki, T. and Sugiyama, M.},
  title = {Condition number analysis of density ratio estimation.},
  booktitle = {},
  year = 2009,
}