Xintong Zhou
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Xintong Zhouによる最近のアクティビティ-
Potential Numerical Issue in MIP Solving
回答済みHi,I am working on this small instance:Minimize OBJ: 162.98 x0 + 441.38 x1 - 419.67 x2 - 219.21 x3 Subject To c0: 71.79 x0 + 32.46 x1 + 98.05 x2 - 2.8 x3 >= -342.3374 c1: - 0.35 x0 + 6.47 x1 - 7.13...
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Gurobi presolve mistakenly reports infeasibility for a feasible instance
回答済みHi,I am working on this small LP instance:\* feasible *\ Minimize OBJ: 55.59 x0 + 20.64 x1 Subject To _C1: - 33.55 x0 + 55.79 x1 <= 4326 _C2: - 49.31 x0 + 39.55 x1 <= 3259.61 _C3: - 76.66 x0 - 42.3...
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Potential Numerical Bug in MIP Solving
回答済みHi,I have a small MIP instance in LP format:\* seed *\ Minimize OBJ: - 48.46 x0 - 25.81 x1 Subject To _C1: 43.67 x0 - 65.24 x1 <= -2955.43 _C2: - 29.71 x0 - 3.98 x1 <= 2826.08 _C3: 42.8 x0 - 42.76 ...
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Confusing results of MIP solving with `FeasibilityTol=1e-9`
回答済みHi,I have a very simple MIP instance in .lp format:\* *\ Minimize OBJ: 2.88 x0 Subject To _C1: - 58.13 x0 <= 4350.27 _C2: - 17.74 x0 <= 0 _C3: 92.9 x0 - 81.99 x1 <= 1106.82 _C4: 84.26 x0 - 20.45 x...
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Potential Numerical Bug in MIP Solving
進行中For this instance https://gist.github.com/zxt5/dc43466d22ebdb82056796a35323a23aGurobi generates the optimal solution with the objective of 3754.. by default,but generates a solution with the object...
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Potential Numerical Issue in MIP Solving
回答済みHi,For this MIP instance https://gist.github.com/zxt5/05cf8233cd842eb57a786f711c6a644bGurobi generates the non-optimal solution (objective = -5840..) with the following parameters:Seed=68804671 Bar...
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Potential Numerical Issue in MIP Solving
回答済みHi,For this mip instance https://gist.github.com/zxt5/91ffce317628c924ddfa39762cfa5cd5 ,gurobi returns with objective value `772.64..` by default, which is the same as other reference solvers.But i...
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Incorrect result of MIP solving
回答済みHi, For the linked problem (https://gist.github.com/zxt5/d34dd713f8de1e09419ff17a0da75952#file-seed-lp ), I think the correct solution should be 21.65, gurobi returns an incorrect solution (34.88) ...
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Inquiry on Reporting Potential Bugs in Gurobi
回答済みI am a university user of Gurobi, currently preparing a research project aimed at detecting potential bugs in MIP solvers through fuzzing techniques. As a researcher, I want to ensure that any issu...