Download Computing and Combinatorics: 15th Annual International by S. Muthukrishnan (auth.), Hung Q. Ngo (eds.) PDF

By S. Muthukrishnan (auth.), Hung Q. Ngo (eds.)

This quantity constitutes the refereed lawsuits of the fifteenth overseas Computing and Combinatorics convention, COCOON 2009, held in manhattan, manhattan, united states in July 2009. The fifty one revised prolonged abstracts awarded have been rigorously reviewed and chosen from a hundred twenty five submissions. The papers are prepared in topical sections on algorithmic online game conception and coding thought, algorithms and knowledge constructions, graph drawing, algorithms and knowledge buildings, cryptography and protection, algorithms, computational geometry, approximation algorithms, computational biology and bioinformatics, sampling and studying, complexity and computability, probabilistic research, and algorithms and knowledge structures.

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Read or Download Computing and Combinatorics: 15th Annual International Conference, COCOON 2009 Niagara Falls, NY, USA, July 13-15, 2009 Proceedings PDF

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Extra resources for Computing and Combinatorics: 15th Annual International Conference, COCOON 2009 Niagara Falls, NY, USA, July 13-15, 2009 Proceedings

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Let k and n denote the dimension and block length of the code (note that k/n = 1 − Hq (ρ) − 1/L). To bound the probability of a “bad” event, the proof first shows that for a fixed set of L+1 messages and a received word y , the probability that all the corresponding L+1 codewords lie within a Hamming ball 1 2 These bounds are implicit in [1]. See [10] for the calculations that imply the lower bounds claimed here. The story for random linear codes is a bit different from that of general codes, as for random linear codes only an upper bound of q O(1/ε) on L is known.

For isolation games defined by w = (1, 1, 0, . . , 0) on symmetric spaces, determining whether there exists a Nash equilibrium is NP-complete. Finally, some existential results for general isolation games on certain particular Euclidean spaces are given. Our Contribution. We analyze the efficiency of pure Nash equilibria for all the classes of isolation games introduced in [14] for which existence of such equilibria is always guaranteed, namely, the -selection isolation games for any 1 ≤ < k and the total-distance isolation games.

We then show that isolation games yielded by the weight vector w = (0, . . , 0, 1, . . , 1) are not potential games, that is, better response dynamics may not converge to Nash equilibria. Table 1. Results for -selection isolation games Social Function Price of Stability Price of Anarchy M IN 1 2 SU M ∞ ∞ Table 2. Results for total-distance isolation games Social Function M IN SU M Price of Stability 1÷ k+1 k−1 1 Price of Anarchy k+1 2 ÷ 2 k−1 2 Paper Organization. Next section contains the necessary definitions and notation.

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