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[ACM Press the thirty-ninth annual ACM symposium - San Diego, California, USA (2007.06.11-2007.06.13)] Proceedings of the thirty-ninth annual ACM symposium on Theory of computing - STOC '07 - Fourier meets möbius: fast subset convolution

✍ Scribed by Björklund, Andreas; Husfeldt, Thore; Kaski, Petteri; Koivisto, Mikko


Book ID
120926519
Publisher
ACM Press
Year
2007
Weight
191 KB
Category
Article
ISBN
1595936319

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[ACM Press the thirty-ninth annual ACM s
✍ Agarwal, Amit; Alon, Noga; Charikar, Moses S. 📂 Article 📅 2007 🏛 ACM Press ⚖ 265 KB

We present improved approximation algorithms for directed multicut and directed sparsest cut. The current best known approximation ratio for these problems is O(n 1/2 ). We obtain an Õ(n 11/23 )-approximation. Our algorithm works with the natural LP relaxation used in prior work. We use a randomized