@ARTICLE{benabbas11efficient,
   author = {{Benabbas}, S. and {Lee}, H.~C. and {Oren}, J. and {Ye}, Y.},
    title = "{Efficient Sum-Based Hierarchical Smoothing Under $\ell_1$-Norm}",
  journal = {ArXiv e-prints},
  note = {arXiv:1108.1751v1},
 primaryClass = "cs.DS",
 keywords = {Computer Science - Data Structures and Algorithms},
     year = 2011,
}