Joshua Shea
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Activity overview
Latest activity by Joshua Shea-
Joshua Shea created a post,
Automated approach to improving numerical stability
AnsweredHello, I solve QCQPs in a statistical context. This means the coefficients in the QCQP problem are not known beforehand. Instead, they must be estimated. I have been running into stability issu...
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Joshua Shea created a post,
R API converges but Gurobi shell does not (for the same MPS file)
Hello, If the MPS file below is loaded into R and passed to the Gurobi API, a solution is obtained in 13,581 iterations (in roughly 10 minutes). However, when loaded into the Gurobi shell on Window...
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Joshua Shea commented,
Hello again, I'm running into a similar problem again. Specifically, if the MPS file below is loaded into R and passed to the Gurobi API, a solution is obtained in 13,581 iterations (in roughly...
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Joshua Shea created a post,
R API behaving differently from Gurobi via command line
Hello, I am running into a strange problem where a model I constructed in R is apparently infeasible or unbounded (Gurobi return status is INF_OR_UNBD). However, I if I set the parameter dualredu...