David Cawlfield

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3. Constraint around a dot product of two columns

Thank's so much Eli, Sorry I'm so rusty at Python.  I'm trying to dust off some coding skills from about 10 years ago and learn the Gurobi interface at the same time.  It's a terrible feature of Py...

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• David Cawlfield
• October 17, 2020 21:41
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1. Community
2. Programming
3. Constraint around a dot product of two columns

If I remove this constraint, the model solves, but with an unuseful result.  If I make the equality an inequality '<= 1', then I get a TypeError: '<=' not supported between instances of 'method' an...

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• David Cawlfield
• October 17, 2020 04:56
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1. Community
2. Programming
3. Constraint around a dot product of two columns

Thank you,  this fix seems to work.   A followup problem is to set a constraint on a two-dimensional binary variable pvar.  I want each row of the model variable to sum to 1.0, so that the row repr...

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• David Cawlfield
• October 16, 2020 21:35
• 0 votes