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4 results for “from:mcgrete”

Constrainted Nonlinear Optimization - lack of convergence
mcgrete · May 20, 2011 · r-help

Hello all, I did find a bug in coding my cost function; I have only run a few examples to verify it works properly, but this appears to have solved most of my questions. I did find that some of...

Trouble with Optimization in "Alabama" Package
mcgrete · Jun 20, 2011 · r-help

Hello all, I was in direct email contact with Ravi, who was very kind to offer his assistance. Inbetween correspondence with Ravi, I arrived at a solution. In case others have the same issue, I am sharing the solution. Thanks...

Constrainted Nonlinear Optimization - lack of convergence
mcgrete · May 17, 2011 · r-help

Hello, I am attempting to utilize the 'alabama' package to solve a constrained nonlinear optimization problem. The problem has both equality and inequality constraints (heq and hin functions are used). All constraints are smooth, i.e. I can differentiate easily...

Trouble with Optimization in "Alabama" Package
mcgrete · Jun 19, 2011 · r-help

Hello Erik and Ravi, I am curious if Erick or Ravi have a solution to Erick's question. I have a similar problem. I wish to use auglag to solve a nonlinear optimization problem. The cost function, grad function, and...

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