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Planar Earthmover is not in L_1
Berkeley, California October 21-October 24
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/FOCS.2006.6047th Annual IEEE Symposium on Foundat ...
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Assaf Naor, Microsoft Research
Gideon Schechtman, Weizmann Institute, Israel
We show that any L_1 embedding of the transportation cost (a.k.a. Earthmover) metric on probability measures supported on the grid {0, 1, . . ., n}^2 \subseteq \mathbb{R}^2 incurs distortion \Omega(\sqrt {\log n}). We also use Fourier analytic techniques to construct a simple L_1 embedding of this space which has distortion O(log n).
Citation:
Assaf Naor, Gideon Schechtman, "Planar Earthmover is not in L_1," focs, pp.655-666, 47th Annual IEEE Symposium on Foundations of Computer Science (FOCS'06), 2006
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