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Dive into the research topics where Jaikumar Radhakrishnan is active.

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Featured researches published by Jaikumar Radhakrishnan.


Algorithmica | 1997

Greed is good: Approximating independent sets in sparse and bounded-degree graphs

Magnús M. Halldórsson; Jaikumar Radhakrishnan

AbstractTheminimum-degree greedy algorithm, or Greedy for short, is a simple and well-studied method for finding independent sets in graphs. We show that it achieves a performance ratio of (Δ+2)/3 for approximating independent sets in graphs with degree bounded by Δ. The analysis yields a precise characterization of the size of the independent sets found by the algorithm as a function of the independence number, as well as a generalization of Turán’s bound. We also analyze the algorithm when run in combination with a known preprocessing technique, and obtain an improved


SIAM Journal on Discrete Mathematics | 2000

Bounds for Dispersers, Extractors, and Depth-Two Superconcentrators

Jaikumar Radhakrishnan; Amnon Ta-Shma


Archive | 2004

FST TCS 2003: Foundations of Software Technology and Theoretical Computer Science

Paritosh K. Pandya; M. Agrawal; Jaikumar Radhakrishnan

(2\bar d + 3)/5


symposium on the theory of computing | 1994

Greed is good: approximating independent sets in sparse and bounded-degree graphs

Magnús M. Halldórsson; Jaikumar Radhakrishnan


ACM Transactions on Information and System Security | 2008

Redoubtable Sensor Networks

Roberto Di Pietro; Luigi V. Mancini; Alessandro Mei; Alessandro Panconesi; Jaikumar Radhakrishnan

performance ratio on graphs with average degree


security of ad hoc and sensor networks | 2004

Connectivity properties of secure wireless sensor networks

Roberto Di Pietro; Luigi V. Mancini; Alessandro Mei; Alessandro Panconesi; Jaikumar Radhakrishnan


foundations of computer science | 1997

Tight bounds for depth-two superconcentrators

Jaikumar Radhakrishnan; Amnon Ta-Shma

\bar d


conference on computational complexity | 2007

The Communication Complexity of Correlation

Prahladh Harsha; Rahul Jain; David A. McAllester; Jaikumar Radhakrishnan


conference on computational complexity | 2005

Prior entanglement, message compression and privacy in quantum communication

Rahul Jain; Jaikumar Radhakrishnan; Pranab Sen

, improving on the previous best


conference on computational complexity | 2002

Better lower bounds for locally decodable codes

Amit Deshpande; Rahul Jain; Telikepalli Kavitha; Satyanarayana V. Lokam; Jaikumar Radhakrishnan

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Pranab Sen

Tata Institute of Fundamental Research

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Rahul Jain

University of Southern California

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Rahul Jain

University of Southern California

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Prahladh Harsha

Tata Institute of Fundamental Research

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Alessandro Mei

Sapienza University of Rome

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