@article{LiuTsaMue17,
    author = {Liu, Weiwei and Tsang, Ivor W. and M{\"{u}}ller, Klaus{-}Robert},
    title = "An Easy-to-hard Learning Paradigm for Multiple Classes and Multiple Labels",
    journal = "Journal of Machine Learning Research",
    volume = "18",
    pages = "94:1--94:38",
    year = "2017",
    url = "http://jmlr.org/papers/v18/papers/v18/16-212.html"
}