19 Dec 13:03

mabdullahsoyturk

1.18.3 Latest

Latest

GAMSPy 1.18.3 (2025-12-19)

New features

#712: Integrate mps2gms to gamspy cli.

Improvements in existing functionality

#730: Read the values of most model attributes from the trace file. Lazily read others if requested.
#740: Improve the alignment of constraints in the result of model.toLatex call.

Bug fixes

#742: Do not perform definition valiation on MPSGE equations since they are generated on the GAMS side.
#743: Use gp.Number instead of a Python variable in nonbinding equations of MCP models.
#745: Retrieve universe alias name from stack in case it's not provided instead of autogenerating a name.

Assets 4

11 Dec 14:23

mabdullahsoyturk

1.18.2

GAMSPy 1.18.2 (2025-12-09)

Improvements in existing functionality

#738: Allow renaming in toLatex function. Support Greek letters in LaTeX format.

Bug fixes

#739: Fix evaluation of math expression where container is not available in any of the input symbols.

Assets 4

03 Dec 14:24

mabdullahsoyturk

1.18.1

GAMSPy 1.18.1 (2025-12-03)

Improvements in existing functionality

#736: Add -a shortcut for gamspy install solver --install-all-solvers command. Add -a shortcut for gamspy uninstall solver --install-all-solvers command.

Bug fixes

#735: Remove number of miro symbols check since there might be containers with no miro symbols.

Assets 4

02 Dec 19:36

mabdullahsoyturk

1.18.0

GAMSPy 1.18.0 (2025-12-01)

Improvements in existing functionality

#727: Accept the path of an existing solver options file as a valid "solver_options" argument in model.solve and container.writeSolverOptions.

Bug fixes

#728: Decouple container and socket connection to allow pickling of symbols and containers.
#729: Fix name mapping of GAMSDict and GAMSDictMap file formats in model.convert function.
#732: Fix model and path issues of "gamspy run miro" command on Windows.

Miscellaneous internal changes

#731: Change expected type of the "output" argument to TextIO instead of TextIOWrapper in model.solve.

Assets 4

10 Nov 23:10

mabdullahsoyturk

1.17.2

GAMSPy 1.17.2 (2025-11-10)

New features

#685: Add FormulationResult class for better accessibility into formulations.
#718: Add formulation for ReLU activation function with equilibrium constraints.

Bug fixes

#723: Fix autoretrieval of python name in addX syntax.

Improved documentation

#685: Add docs for FormulationResult class.
#718: Add docs for ReLU with equilibrium activation function.

Assets 4

01 Nov 13:02

mabdullahsoyturk

1.17.1

GAMSPy 1.17.1 (2025-10-30)

New features

#713: Implement softplus activation function

Bug fixes

#713: Fix bug in lse_max_sc where order of arguments were incorrectly put.
#719: Fix handling paths with empty spaces in model.toGams, model.toLatex and model.convert functions.

Improved documentation

#713: Update docs for softplus activation function.

CI/CD changes

#714: Add a new scheduled job to automatically upgrade pre-commit dependency versions.

Miscellaneous internal changes

#715: Do not install extras of gamsapi and add a direct dependency to pandas.
#716: Add stdcge (a standard cge model) to the test suite.

Assets 4

10 Oct 13:02

mabdullahsoyturk

1.17.0

GAMSPy 1.17.0 (2025-10-10)

Improvements in existing functionality

#701: Show licensed solvers in the output of "gamspy show license"
#703: Start using griffe to ensure backward compatibility.

Bug fixes

#668: Fix synchronization bug in expert sync mode when there are other symbols defined after setting the synchronize flag.

Improved documentation

#710: Add Google Collab links into examples and reorder examples for better flow.

Dependencies

#707: Replace urllib3 with requests for network calls.

Miscellaneous internal changes

#566: Add indus89 to the model library.
#709: Change the default value of 'USE_PY_VAR_NAME' to 'yes-or-autogenerate'.

Assets 4

17 Sep 12:21

mabdullahsoyturk

1.16.0

GAMSPy 1.16.0 (2025-09-16)

New features

#679: Now sets with single element generated using dim are singleton sets.

Improvements in existing functionality

#639: Use temporary sets instead of temporary parameters to get the result of set-based expressions.
#690: Improve model generation speed for RandomForest and GradientBoosting.
#698: If no indices are provided in an assignment, assume that the operation is over the whole domain.
#699: Allow the definition of a nonbinding equation without an equality operator. GAMSPy will automatically add == 0 at the end of the expression.
#702: Use ProxyManager in case the user specifies HTTPS_PROXY or HTTP_PROXY.

Bug fixes

#683: Fix records filtering bug for subset indices.
#684: In model.toGams call, write aliased set to the .gms file as well in case an alias is used as a domain.

Improved documentation

#679: Update matrix operations document for scalar extraction and style changes.
#692: Add Traveling Saleman Problem (TSP) in Notebook examples.
#697: Add documentation for model types required for formulations.

Dependencies

#679: Upgrade gamspy_base and gamsapi to 51.1.0.

Miscellaneous internal changes

#695: .records call will return either a DataFrame or None. It will stop squeezing single rows into a float.

Assets 4

17 Sep 12:23

mabdullahsoyturk

1.15.1

GAMSPy 1.15.1 (2025-08-30)

New features

#642: Add RandomForest formulation.
#655: Add GradientBoosting formulation.
#682: - Introduce a convenience function for tanh in gamspy.math.activations to generate the output variable and equations.
- Add init_weights parameter in make_variable for Linear, Conv1d and Conv2d formulations.

Improvements in existing functionality

#686: Allow specifying checkout duration through gamspy retrieve command to allow checking out network licenses.

Improved documentation

#642: Add docs for RandomForest formulation.
#655: Add docs for GradientBoosting formulation.
#682: Update documentation for training NNs to showcase formulations.
#688: Update documentation for ML formulations.

Assets 4

17 Sep 12:24

mabdullahsoyturk

1.15.0

GAMSPy 1.15.0 (2025-08-14)

New features

#653: Allow bulk setRecords via Container.setRecords function.
#680: Add formulation for Leaky ReLU activation function.

Improvements in existing functionality

#681: Allow redirecting generateGamsString output to a file.
Generate unique gdx files for each execution if the debugging level is set to "keep".

Bug fixes

#674: Fix the bug that causes solve link option of one model to propagate to another model.

Improved documentation

#680: Minor docs fix and add docs fix for Leaky ReLU activation function.

Miscellaneous internal changes

#450: Add a new model (tsp) to the model library.

Assets 4