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INFOCOM
1997
IEEE
15 years 8 months ago
Integrated Rate and Credit Feedback Control for ABR Service in ATM Networks
We propose a ow-control scheme that combines the merits of credit- and rate-based ow-control schemes by applying direct control over both bandwidth and bu er resources. The goal...
Xi Zhang, Kang G. Shin, Qin Zheng
156
Voted
STOC
2007
ACM
181views Algorithms» more  STOC 2007»
16 years 4 months ago
How to rank with few errors
We present a polynomial time approximation scheme (PTAS) for the minimum feedback arc set problem on tournaments. A simple weighted generalization gives a PTAS for KemenyYoung ran...
Claire Kenyon-Mathieu, Warren Schudy
STOC
2006
ACM
112views Algorithms» more  STOC 2006»
16 years 4 months ago
A quasi-PTAS for unsplittable flow on line graphs
We study the Unsplittable Flow Problem (UFP) on a line graph, focusing on the long-standing open question of whether the problem is APX-hard. We describe a deterministic quasi-pol...
Nikhil Bansal, Amit Chakrabarti, Amir Epstein, Bar...
151
Voted
SCALESPACE
2009
Springer
15 years 11 months ago
A Non-local Approach to Shape from Ambient Shading
We study the mathematical and numerical aspects of the estimation of the 3-D shape of a Lambertian scene seen under diffuse illumination. This problem is known as “shape from amb...
Emmanuel Prados, Nitin Jindal, Stefano Soatto
COCOON
2005
Springer
15 years 10 months ago
A PTAS for a Disc Covering Problem Using Width-Bounded Separators
In this paper, we study the following disc covering problem: Given a set of discs of various radii on the plane, find a subset of discs to maximize the area covered by exactly on...
Zhixiang Chen, Bin Fu, Yong Tang, Binhai Zhu