Resource - Bounded Dimension , Nonuniform Complexity , and Approximation of MAX 3 SAT

نویسندگان

  • John M. Hitchcock
  • Clifford Bergman
  • Giora Slutzki
چکیده

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Scaled Dimension and Nonuniform Complexity

Resource-bounded dimension is a complexity-theoretic extension of classical Hausdorff dimension introduced by Lutz (2000) in order to investigate the fractal structure of sets that have resource-bounded measure 0. For example, while it has long been known that the Boolean circuit-size complexity class SIZE ( α n

متن کامل

On Some Tighter Inapproximability Results, Further Improvements

Improved inaproximability results are given, including the best up to date explicit approximation thresholds for bounded occurence sat-issability problems, like MAX-2SAT and E2-LIN-2, and problems in bounded degree graphs, like MIS, Node Cover and MAX CUT. We prove also for the rst time inapproximability of the problem of Sorting by Reversals and display an explicit approximation threshold for ...

متن کامل

An approximation hardness result for bipartite Clique

Assuming 3-SAT formulas are hard to refute on average, Feige showed some approximation hardness results for several problems like min bisection, dense k-subgraph, max bipartite clique and the 2-catalog segmentation problem. We show a similar result for max bipartite clique, but under the assumption, 4-SAT formulas are hard to refute on average. As falsity of the 4-SAT assumption implies falsity...

متن کامل

Approximation Algorithms for MAX SAT

Maximum Satisfiability Problem (MAX SAT) is one of the most natural optimization problems. It is known to be NP-hard. Hence, approximation algorithms have been considered. The aim of this survey is to show recent developments of approximation algorithms for MAX SAT. We will confine ourselves to approximation algorithms with theoretical performance guarantees. For other approximation algorithms ...

متن کامل

Approximating MAX SAT by Moderately Exponential and Parameterized Algorithms

We study approximation of the max sat problem by moderately exponential algorithms. The general goal of the issue of moderately exponential approximation is to catch-up on polynomial inapproximability, by providing algorithms achieving, with worst-case running times importantly smaller than those needed for exact computation, approximation ratios unachievable in polynomial time. We develop seve...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2005