Famous lyrics by »

In complexity theory the class APX (an abbreviation of "approximable") is the set of NP optimization problems that allow polynomial-time approximation algorithms with approximation ratio bounded by a constant (or constant-factor approximation algorithms for short). In simple terms, problems in this class have efficient algorithms that can find an answer within some fixed multiplicative factor of the optimal answer. An approximation algorithm is called an f ( n ) {\displaystyle f(n)} -approximation algorithm for input size n {\displaystyle n} if it can be proven that the solution that the algorithm finds is at most a multiplicative factor of f ( n ) {\displaystyle f(n)} times worse than the optimal solution. Here, f ( n ) {\displaystyle f(n)} is called the approximation ratio. Problems in APX are those with algorithms for which the approximation ratio f ( n ) {\displaystyle f(n)} is a constant c {\displaystyle c} . The approximation ratio is conventionally stated greater than 1. In the case of minimization problems, f ( n ) {\displaystyle f(n)} is the found solution's score divided by the optimum solution's score, while for maximization problems the reverse is the case. For maximization problems, where an inferior solution has a smaller score, f ( n ) {\displaystyle f(n)} is sometimes stated as less than 1; in such cases, the reciprocal of f ( n ) {\displaystyle f(n)} is the ratio of the score of the found solution to the score of the optimum solution. If there is a polynomial-time algorithm to solve a problem to within every multiplicative factor of the optimum other than 1, then the problem is said to have a polynomial-time approximation scheme (PTAS). Unless P = NP there exist problems that are in APX but without a PTAS, so the class of problems with a PTAS is strictly contained in APX. One such problem is the bin packing problem.

FAVORITE (0 fans)

Albums by APXSort:By AlbumA - Z


Amplified Experiment [2019]

SongDuration 
All or Nothing2:52 
Can’t Stop Us Now2:16 
Deja Vu3:01 
F.Y.G.2:45 
Jupiter3:18 
Lobby2:40 
Lucid Dream3:05 
Magnetic3:06 
Mirror3:01 
Premonition2:33 
Wake Me2:55 

Jupiter [2018]

SongDuration 
Jupiter3:59 

Share your thoughts on the APX Band with the community:

Missing lyrics by APX?

Know any other songs by APX? Don't keep it to yourself!

APX tracks

On Radio Right Now

Loading...

Powered by OnRad.io


Think you know music? Test your MusicIQ here!

Our awesome collection of

Promoted Songs

»