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» Approximating Betweenness Centrality
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FOCS
2009
IEEE
14 years 4 months ago
Agnostic Learning of Monomials by Halfspaces Is Hard
— We prove the following strong hardness result for learning: Given a distribution on labeled examples from the hypercube such that there exists a monomial (or conjunction) consi...
Vitaly Feldman, Venkatesan Guruswami, Prasad Ragha...
INFOCOM
2009
IEEE
14 years 4 months ago
Searching for Stability in Interdomain Routing
—The Border Gateway Protocol (BGP) handles the task of establishing routes between the Autonomous Systems (ASes) that make up the Internet. It is known that it is possible for a ...
Rahul Sami, Michael Schapira, Aviv Zohar
COMPLEX
2009
Springer
14 years 4 months ago
Return Intervals Approach to Financial Fluctuations
Financial fluctuations play a key role for financial markets studies. A new approach focusing on properties of return intervals can help to get better understanding of the fluct...
Fengzhong Wang, Kazuko Yamasaki, Shlomo Havlin, H....
FSTTCS
2009
Springer
14 years 4 months ago
Kernels for Feedback Arc Set In Tournaments
A tournament T = (V, A) is a directed graph in which there is exactly one arc between every pair of distinct vertices. Given a digraph on n vertices and an integer parameter k, th...
Stéphane Bessy, Fedor V. Fomin, Serge Gaspe...
PAISI
2009
Springer
14 years 4 months ago
Discovering Compatible Top-K Theme Patterns from Text Based on Users' Preferences
Discovering a representative set of theme patterns from a large amount of text for interpreting their meaning has always been concerned by researches of both data mining and inform...
Yongxin Tong, Shilong Ma, Dan Yu, Yuanyuan Zhang, ...