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- W1490248898 abstract "The maximum power consumption problem on combinatorial circuits is the problem of estimating the maximum power consumption of a given combinatorial circuit. It is easy to see that this problem for general circuits is hard to approximate within a factor of m1-Ɛ, where m is the number of gates in an input circuit and Ɛ is any positive (small) constant. In this paper, we consider restricted circuits, namely, those consisting of only one level of AND/OR gates. Then the problem becomes a kind of MAX 2SAT where each variable takes one of four values, f, t, d and u. This problem is NP-hard and the main objective of this paper is to give approximation algorithms.We consider two cases, the case that positive and negative appearances of each variable are well balanced and the general case. For the first case, we achieve an approximation ratio of 2(3k-l)/α(3k+l) where α = 0.87856 and k/l is the maximum ratio of the number of positive appearances over the number of negative appearances of each variable. For the general case, we obtain an approximation ratio of 1.7. Both results involve deep, systematic analyses." @default.
- W1490248898 created "2016-06-24" @default.
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- W1490248898 date "2000-01-01" @default.
- W1490248898 modified "2023-10-18" @default.
- W1490248898 title "Approximation Algorithms for the Maximum Power Consumption Problem on Combinatorial Circuits" @default.
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- W1490248898 doi "https://doi.org/10.1007/3-540-40996-3_18" @default.
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