@ARTICLE{SugMue05,
    author = {Sugiyama, S. and M{\"u}ller, K.-R.},
    title = "Input-Dependent Estimation of Generalization Error under Covariate Shift",
    journal = "Statistics and Decisions",
    year = "2005",
    volume = "23",
    pages = "249-279",
    number = "4",
    pdf = "http://www.cs.titech.ac.jp/\textasciitilde tr/reports/2005/TR05-0001.pdf"
}