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approximability造句

"approximability"是什么意思   

例句與造句

  1. Sudan has made important contributions to several areas of theoretical computer science, including probabilistically checkable proofs, non-approximability of list decoding, and error-correcting codes.
  2. Multifunctions arise in correspondence . ) This among many other properties loosely associated with approximability of upper hemicontinuous multifunctions via continuous functions explains why upper hemicontinuity is more preferred than lower hemicontinuity.
  3. The approximability of set covering is also well understood : a logarithmic approximation factor can be found by using a simple greedy algorithm, and finding a sublogarithmic approximation factor is NP-hard.
  4. Not all types of approximation-preserving reductions can be used to show membership in all approximability complexity classes, the most notable of which are completeness of a problem within a complexity class.
  5. NP-hard problems vary greatly in their approximability; some, such as the bin packing problem, can be approximated within any factor greater than 1 ( such a family of approximation algorithms is often called a polynomial time approximation scheme or " PTAS " ).
  6. It's difficult to find approximability in a sentence. 用approximability造句挺難的
  7. However, David Zuckerman showed in 1996 that every one of these 21 problems has a constrained optimization version that is impossible to approximate within any constant factor unless P = NP, by showing that Karp's approach to reduction generalizes to a specific type of approximability reduction.

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