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Because they did not show they used any methodological approach that we don't know for the past 30 years. And according to the PR they did not use gurobi (or a
by whatever1 2y ago
Because they did not show they used any methodological approach that we don't know for the past 30 years.
And according to the PR they did not use gurobi (or any sota mip solver), just their in-house lp solver in combination with shortest path algorithms and the fix-and-optimize heuristic.
Likely your particular use case will not fit their model anyway (for example you may want to consider contracts of affreighent along with leasing entire vessels).
So yes, or scientist and gurobi will definitely win.
- bubblyworld 2y agoOn the other hand they cleared an open source benchmark by a long way, for which people have had plenty of time to apply existing approaches, right? This is just a PR article, it's hard to say what they did or didn't try before arriving at this solution.
- whatever1 2y agoBecause frankly nobody gives a sh about throwing resources and finding just better (not globally optimal) solutions to synthetic benchmarks. Academics care about proving optimality. Businesses care about their own specific use case and not synthetic benchmarks.
- bubblyworld 2y agoOkay, well, thanks for your thoughts.
- chaoxu 2y ago> Because frankly nobody gives a sh about throwing resources and finding just better (not globally optimal) solutions to synthetic benchmarks. This does not align with my experience of people working in OR.
- cerved 2y agoHow do you come to this conclusion? They way I read it rather sounds like they use the CP-SAT solver with LNS and LS workers, parallelized over multiple machines
- chaoxu 2y agoA heuristic using problem specific structure can beat Gurobi which is for solving general mip.