@inproceedings{charlin06NIPS,
        author    = {Laurent Charlin and Pascal Poupart and Romy Shioda},
        title     = {Automated Hierarchy Discovery for Planning in Partially Observable Environments},
        booktitle = {To appear in Advances in Neural Information Processing Systems 19},
        editor    = {B. Sch\"{o}lkopf and J.C. Platt and T. Hofmann},
        publisher = {MIT Press},
        address   = {Cambridge, MA},
        pages     = {225-232},
        year      = {2007}
}