discreteoptimization / setcover Goto Github PK
View Code? Open in Web Editor NEWOpen source solvers for the Discrete Optimization set cover assignment.
License: MIT License
Open source solvers for the Discrete Optimization set cover assignment.
License: MIT License
@ccoffrin greedy_001
solution (possibly others too, haven't looked into them yet) keeps adding sets until getting full coverage. However - some sets are added for which their items are already covered by previously added sets, thus adding cost but without any value gain.
By adding the following inside the main loop: (tested in 3.10, not in earlier Python versions)
if len(set(s.items).intersection(covered)) == len(set(s.items)):
continue
this can be avoided
Why is covered spelt as 'coverted' in the solve_it() function for the greedy folder? Took me a while to figure that out.
In data/sc_8661_1, line 1272, the entry is 1999 -1
, i.e. cost 1999 for a single-elemented set {-1}. Are negative element values valid? Or is this a flaw?
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