Jiangfei DUAN
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Recent activity by Jiangfei DUAN-
gurobi set initial solution slow down the solver
OngoingHi, gurobi community, I am trying to use an initial solution to speed up the solver (MILP model). But in my case, the initial solution sometimes slow down the solving speed. Here are my two result...
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Gurobi MILP branch-and-cut algorithm
AnsweredHi, gurobi community, I am trying yo solve a MILP problem with gurobipy. But my model is too large with millions vars and constraints. When solving the problem, I notified that the memory is runn...
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How to determine the speed bottleneck of my Model?
AnsweredHi, I am new to Linear Programming. To solve my problem, I modeling a complex model, and it takes too long to get a result. I want to speed up it, but I cannot point out the bottleneck. 1. I wonder...
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How to model the problem of cutting a polyhedron into parts
AnsweredHi, I met a problem in my modeling. Here I abstract a minimal question of my problem. Suppose I have a polyhedron (Rectangle, cube for example). For simplify, I use a rectangle as an example. The h...
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var is a bound to be used in constraints
I have an n-dim array, shape is \((d_0, d_1, ..., d_n)\), I want to split the array along each dim. I use a list of variable \((p_0, p_1, ..., p_n)\) to denote split i-th dim into \(p_i\) parts. an...