The Pseudo-Boolean Optimization Website

 

50-1
OR-LIB

 

variables: 50
density: 10%
diagonal coefficients: integer uniform [-100,100]
off-diagonal coefficients: integer uniform [-100,100]
starting seed:

---

 
Maximum
Value Type Source Method Time Technology
2,098 optimal

E. Boros, P. L. Hammer and G. Tavares, (2005), "Exact methods for unconstrained quadratic binary optimization", work currently underway, RUTCOR, Rutgers University.

--- --- ---
2,098 lower bound

J. E. Beasley, (1998), ''Heuristic algorithms for the unconstrained binary quadratic programming problem'', Technical Report, Management School, Imperial College, London, UK.

tabu search 14 sec Silicon Graphics Indigo (R4000, 100 MHz, 48 MB RAM).
2,098 lower bound

J. E. Beasley, (1998), ''Heuristic algorithms for the unconstrained binary quadratic programming problem'', Technical Report, Management School, Imperial College, London, UK.

simulated annealing 19 sec Silicon Graphics Indigo (R4000, 100 MHz, 48 MB RAM).
 

Copyright © 2003 RUTCOR.
For problems or questions regarding the PBO website contact pbo@rutcor.rutgers.edu.
Last updated: February 12, 2005.