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pyomo - Pyomo 6.8.0 Latest Release

Published by mrmundt about 2 months ago

Highlights of the 6.8 release series

Support for Numpy2
Refactor of Design of Experiments (contrib.doe)
New packages:
- alternative_solutions: alternative (near) optimal solutions
New solver interfaces:
- SAS: Statistical Analysis System
- v2: Ongoing solver interface refactor
...and of course numerous minor bug fixes and performance enhancements

Changes in this release

SIGNIFICANT CHANGE NOTICE

Internal data storage for Constraint objects (see #3293)
No longer release cythonized wheel for Python 3.11+ (see #3355)

CHANGELOG

General
- Add ParameterizedQuadraticRepn and corresponding walker (#3324)
- Update Pyomo for NumPy 2.0 compatibility (#3292, #3353)
- Add ParameterizedLinearRepn and corresponding walker (#3268)
- Update Release Process Workflow for changes in pip (#3355)
Core
- Handle uninitialized variable in propagate_solution of scaling
  transformation (#3275)
- Add context option to SuffixFinder (#3348)
- Remove the _suppress_ctypes attribute from Block (#3347)
- Improve Set initialization performance (#3302)
- Update Constraint to only store the original expression (not
  lower/body/upper) (#3293)
- Kernel: fix bug in conic geomean (#3310)
- Fix bug with IndexedSet objects and the within argument (#3288)
- Support validate/filter for IndexedSet components using index (#3338)
Solver Interfaces
- Resolve NLv2 incompatibility with multithreading (#3332)
- Resolve writer performance degradation (#3343)
- Fix bug with inconsistent use of result and results (#3337)
- LegacySolverWrapper: restore 'options' attribute (#3334)
- Fix bug in XpressDirect._load_slacks (#3318)
- NLv2: support expressions with nested external functions (#3319)
- Ignore errors on ASL solver version check (#3298)
- Add SAS solver interface (#2886, #3309)
Testing
- Omnibus testing / platform portability fixes (#3335)
- Change BARON download URL (#3328)
- Disable interface/testing for NEOS/octeract (#3322)
- Fix typo in Jenkins driver (#3312)
- Jenkins: update logic for recording variables (#3311)
- Unpin Codecov / Update coverage (#3303)
GDP
- Don't transform known-to-be infeasible Disjuncts in multiple BigM (#3314)
Contributed Packages
- alternative_solutions: Add a new contrib package for generating
  alternative solutions (#3270)
- APPSI: Allow maingo_solvermodel to be imported without maingopy (#3330)
- APPSI: Sort indices while removing constraints to fix bug in HiGHs
  interface (#3281)
- CP: Add beforeChild handling for bools in logical expressions (#3315)
- DoE: Refactor to improve API and maintainability (#3317)
- incidence_analysis: Raise error in generate_strongly_connected_components
  instead of asserting (#3305)
- parmest: Add missing main call for example file (#3349)
- piecewise: Add incremental PW linear to MIP transformation (#3287)
- piecewise: Add nonlinear-to-piecewise-linear transformation (#3333)
- PyNumero: Support user-provided CyIpopt callbacks with 13 arguments (#3289)
- PyNumero: Support PyomoNLP scaling factors on sub-blocks (#3295)
- PyROS: Temporarily Adjust NL Writer Feasibility Tolerance (#3280)
- viewer: Add option to specify the model by variable name (#3271)

pyomo - Pyomo 6.7.3

Published by blnicho 5 months ago

Highlight of the 6.7 release series

Added support for Python 3.12
Removed support for Python 3.7
New writer for converting linear models to matrix form
Improved handling of nested GDPs
Redesigned user API for parameter estimation
New packages:
- iis: new capability for identifying minimal intractable systems
- latex_printer: print Pyomo models to a LaTeX compatible format
- contrib.solver: preview of redesigned solver interfaces
- simplification: simplify Pyomo expressions
New solver interfaces
- MAiNGO: Mixed-integer nonlinear global optimization
...and of course numerous minor bug fixes and performance enhancements

Changes in this release

Core
- Deprecate pyomo.core.plugins.transform.model.to_standard_form() (#3265)
- Reorder definitions to avoid NameError in some situations (#3264)
Solver Interfaces
- NLv2: Fix linear presolver with constant defined vars/external fcns (#3276)
Testing
- Add URL checking to GHA linting job (#3259, #3261)
- Skip Windows Python 3.8 conda GHA job (#3269)
Contributed Packages
- DoE: Bug fixes for workshop (#3267)
- viewer: Update guard for pint import (#3277)

pyomo - Pyomo 6.7.2

Published by jsiirola 5 months ago

Highlight of the 6.7 release series

Added support for Python 3.12
Removed support for Python 3.7
New writer for converting linear models to matrix form
Improved handling of nested GDPs
Redesigned user API for parameter estimation
New packages:
- iis: new capability for identifying minimal intractable systems
- latex_printer: print Pyomo models to a LaTeX compatible format
- contrib.solver: preview of redesigned solver interfaces
- simplification: simplify Pyomo expressions
New solver interfaces
- MAiNGO: Mixed-integer nonlinear global optimization
...and of course numerous minor bug fixes and performance enhancements

Changes in this release

General
- Support config domains with either method or attribute domain_name (#3159)
- Automate TPL callback registrations (#3167)
- Fix type registrations for ExternalFunction arguments (#3168)
- Only modify module path and spec for deferred import modules (#3176)
- Add "mixed" standard form representation (#3201)
- Support "default" dispatchers in ExitNodeDispatcher (#3194)
- Redefine objective sense as a proper IntEnum (#3224)
- Fix division-by-0 bug in linear walker (#3246)
Core
- Allow Var objects in LinearExpression.args (#3189)
- Add type hints to components (#3173)
- Simplify expressions generated by TemplateSumExpression (#3196)
- Make component data public classes (#3221, #3253)
- Exploit repeated named expressions in identify_variables (#3190)
Documentation
- NFC: Add link to the HOMOWP companion notebooks (#3195)
- Update installation documentation to include Cython instructions (#3208)
- Add links to the Pyomo Book Springer page (#3211)
Solver Interfaces
- Fix division by zero error in linear presolve (#3161)
- Subprocess timeout update (#3183)
- Solver Refactor - Bug fixes for various components (#3181, #3214, #3228)
- NLv2: handle presolved independent linear subsystems (#3193)
- Update LegacySolverWrapper compatibility with the pyomo script (#3202)
- Fix mosek_direct to use putqconk instead of putqcon (#3199)
- Check _skip_trivial_constraints before the constraint body (#3226)
- Fix AMPL solver duplicate funcadd (#3206)
- Disable the use of universal newlines in the ipopt_v2 NL file (#3231)
- NLv2: fix reporting numbers of nonlinear discrete variables (#3238)
- Fix: Get SCIP solving time considering float number with some text (#3234)
- Solver Refactor - Add gurobi_direct implementation (#3225)
Testing
- Update TPL package list due to contrib.solver (#3164)
- Set maxDiff=None on the base TestCase class (#3171)
- Testing infrastructure updates (#3175)
- Typos update for March 2024 (#3219)
- Add openmpi to testing environment to resolve issue in mpi4py (#3236, #3239)
- Skip black 24.4.1 due to a bug in the parser (#3247)
- Skip tests on draft and WIP pull requests (#3223)
- Update GHA to grab gurobipy from PyPI (#3254)
GDP
- Use private_data for all original / transformed component mappings (#3166)
- Fix a bug in gdp.bigm transformation for nested GDPs (#3213)
Contributed Packages
- APPSI: cmodel: handle non-mutable params in var / constraint bounds (#3182)
- APPSI: Allow APPSI FBBT to handle nested named Expressions (#3185)
- APPSI: Add MAiNGO solver interface (#3165)
- CP: Add SequenceVar and other logical expressions for scheduling (#3227)
- DoE: Bug fixes (#3245)
- iis: Add minimal intractable system infeasibility diagnostics (#3172)
- incidence_analysis: Improve solve_strongly_connected_components
  performance for models with named expressions (#3186)
- incidence_analysis: Add function to plot incidence graph in
  Dulmage-Mendelsohn order (#3207)
- incidence_analysis: Require variables and constraints to be specified
  separately in IncidenceGraphInterface.remove_nodes (#3212)
- latex_printer: bugfix for set operations / multidimensional sets (#3177)
- MindtPy: Add HiGHS support (#2971)
- MindtPy: Add call_before_subproblem_solve callback (#3251)
- Parmest: New UI using experiment lists (#3160)
- piecewise: Add piecewise linear transformations (#3036)
- preprocessing: bugfix: intersect domains in variable aggregator (#3241)
- PyNumero: Allow CyIpopt to solve problems without objectives (#3163)
- PyNumero: Work around bug in CyIpopt 1.4.0 (#3222)
- PyNumero: Include "inventory" in readme (#3248)
- PyROS: Simplify custom domain validators (#3169)
- PyROS: Fix iteration logging for edge case involving discrete sets (#3170)
- PyROS: Update solver timing system (#3198)
- simplification: expression simplification using GiNaC or SymPy (#3088)

pyomo - Pyomo 6.7.1

Published by mrmundt 8 months ago

Highlight of the 6.7 release series

Added support for Python 3.12
Removed support for Python 3.7
New writer for converting linear models to matrix form
Improved handling of nested GDPs
New packages:
- latex_printer: print Pyomo models to a LaTeX compatible format
- contrib.solver: preview of redesigned solver interfaces
...and of course numerous minor bug fixes and performance enhancements

Changes in this release

General
- Add support for tuples in ComponentMap; add DefaultComponentMap (#3150)
- Update Path, PathList, and IsInstance Domain Validators (#3144)
- Remove usage of __all__ (#3142)
- Extend Path and Type Checking Validators of common.config (#3140)
- Update Copyright Statements (#3139)
- Update ExitNodeDispatcher to better support extensibility (#3125)
- Create contributors data gathering script (#3117)
- Prevent duplicate entries in ConfigDict declaration order (#3116)
- Remove unnecessary __future__ imports (#3109)
- Import pandas through pyomo.common.dependencies (#3102)
- Update links to workshop slides (#3079)
- Remove incorrect use of identity (is) comparisons (#3061)
Core
- Add Block.register_private_data_initializer() (#3153)
- Generalize the simple_constraint_rule decorator (#3152)
- Fix edge case assigning new numeric types to Var/Param with units (#3151)
- Add private_data to _BlockData (#3138)
- IndexComponent create implicit sets as "anonymous" sets (#3075)
- Add all_different and count_if to the logical expression system (#3058)
- Fix RangeSet.len when defined by floats (#3119)
- Overhaul the Suffix component (#3072)
- Enforce expression immutability in expr.args (#3099)
- Improve NumPy registration when assigning numpy to Param (#3093)
- Track changes in PyPy behavior introduced in 7.3.14 (#3087)
- Remove automatic numpy import (#3077)
- Fix range_difference for Sets with nonzero anchor points (#3063)
- Clarify errors raised by accessing Sets by positional index (#3062)
Documentation
- Update intersphinx links, remove docs for nonfunctional code (#3155)
- Update MPC documentation and citation (#3148)
- Fix an error in the documentation for LinearExpression (#3090)
- Fix Pyomo.DoE documentation (#3070)
- Fix latex_printer documentation (#3066)
Solver Interfaces
- Preview release of new solver interfaces as pyomo.contrib.solver
  (#3137, #3156)
- Make error msg more explicit wrt different interfaces (#3141)
- NLv2: only raise exception for empty models in the legacy API (#3135)
- Add to_expr() to AMPLRepn, fix NLWriterInfo return type (#3095)
Testing
- Update Release Wheel Builder Action (#3149)
- Actions Version Update: Address node.js deprecations (#3118)
- New Black Major Release (24.1.0) (#3108)
- Use scip for PyROS tests (#3104)
- Add missing solver dependency flags for OnlineDocs tests (#3094)
- Re-enable contrib.viewer.tests.test_qt.py (#3085)
- Add automated testing of OnlineDocs examples (#3080)
- Silence deprecation warnings emitted by Pyomo tests (#3076)
- Fix Python 3.12 tests (manage pyutilib, distutils dependencies) (#3065)
DAE
- Replace deprecated numpy.math alias with standard math module (#3074)
GDP
- Handle nested GDPs correctly in all the transformations (#3145)
- Fix bugs in nested models in gdp.hull transformation (#3143)
- Various bug fixes in gdp.mbigm transformation (#3073)
- Add GDP => MINLP Transformation (#3082)
Contributed Packages
- GDPopt: Fix lbb solve_data bug (#3133)
- GDPopt: Adding missing import for gdpopt.enumerate (#3105)
- FBBT: Extend fbbt.ExpressionBoundsVisitor to handle relational
  expressions and Expr_if (#3129)
- incidence_analysis: Method to add an edge in IncidenceGraphInterface (#3120)
- incidence_analysis: Add subgraph method to IncidencegraphInterface (#3122)
- incidence_analysis: Add ampl_repn option (#3069)
- incidence_analysis: Update documentation (#3067)
- interior_point: Resolve test failure due to Mumps update (#3114)
- MindtPy: Various bug fixes (#3034)
- PyROS: Update Solver Argument Resolution and Validation Routines (#3126)
- PyROS: Update Subproblem Initialization Routines (#3071)
- PyROS: Fix DR polishing under nominal objective focus (#3060)

pyomo - Pyomo 6.7.0

Published by jsiirola 11 months ago

Highlights of the 6.7 release series

Added support for Python 3.12
Removed support for Python 3.7
New writer for converting linear models to matrix form
New packages:
- latex_printer (print Pyomo models to a LaTeX compatible format)
...and of course numerous minor bug fixes and performance enhancements

Changes in this release

General
- Remove Python 3.7, add Python 3.12 Support (#3050, #2956)
- Update report_timing() to support context manager API (#3039)
- Add Preformatted class for logging preformatted messages (#2998)
- QuadraticRepnVisitor: Improve nonlinear expression expansion (#2997)
- Add CITATION file to main repository (#2992)
- Minor typo / formatting fixes (#3010, #2975)
Core
- Fix exception from interaction of Gurobi, Pint, Dask, and Threading (#3026)
- Fix differentiation of Expressions with native_numeric_types (#3017)
- Warn for explicit declaration of immutable params with units (#3004)
- Use SetInitializer for initializing Param domains; reinitializing
  IndexedVar domains (#3001)
- Ensure templatize_constraint returns an expression (#2983)
- Prevent multiple applications of the scaling transform (#2979)
Solver Interfaces
- Remove presolve-eliminated variables from named expressions (#3056)
- Improve LP/NL writer determinism (#3054)
- Add "writer" for converting linear models to standard matrix form (#3046)
- NLv2/LPv2: Log which suffix values were skipped at the DEBUG level (#3043)
- NLv2: add linear presolve and general problem scaling support (#3037)
- Adjust mps writer format for integer variable declaration (#2946)
- Fix scip results processing (#3023)
- Fix quadratic objective off-diagonal-terms in cplex_direct interface (#3025)
- Consolidate walker logic in LP/NL representations (#3015)
- LP writer: warn user for ignored suffixes (#2982)
- Update handling of 0* in linear, quadratic walkers (#2981)
Testing
- Pin gurobipy version for testing to 10.0.3 (#3053)
- Update Performance Plot URL (#3033)
- Track change in Black rules (#3021)
- Resolve build infrastructure errors (with mpi4py, gams, networkx) (#3018)
- Improve GHA conda env package setup (#3013, #2967)
- Update Gurobi license checks in tests (#3011)
- Skip fileutils test failure that persists in OSX 12.7 (#3008)
- LINTING: New Version of crate-ci/typos (#2987)
GDP
- Improve Disjunction construction error for invalid types (#3042)
- Adding new walker for compute_bounds_on_expr (#3027)
- Fix bugs in gdp.bound_pretransformation (#2973)
- Fix various bugs in GDP transformations (#3009)
- Add a few more GDP examples (#2932)
Contributed Packages
- APPSI: Add interface to WNTR (#2902)
- APPSI: Capture HiGHS output when initializing model (#3005)
- APPSI: Fix auto-update when unfixing variable and changing bounds (#2996)
- APPSI: Fix reference bug in HiGHS interface (#2995)
- FBBT: Add new walker for compute_bounds_on_expr (#3027)
- incidence_analysis: Fix bugs with subset ordering and 0 coefficients (#3041)
- incidence_analysis: Update paper reference (#2969)
- latex_printer: Add contrib.latex_printer package (#2984)
- MindtPy: Add support for GreyBox models (#2988)
- parmest: Cleanup examples and tests (#3028)
- PyNumero: Handle evaluation errors in CyIpopt solver (#2994)
- PyROS: Report relative variable shifts in solver logs (#3035)
- PyROS: Update logging system (#2990)

pyomo - Pyomo 6.6.2

Published by mrmundt about 1 year ago

Highlights of the 6.0 release series

Improved stability and robustness of core Pyomo code and solver interfaces
Integration of Boolean variables into GDP
Integration of NumPy support into the Pyomo expression system
Implemented a more performant and robust expression generation system
Implemented a more performant NL file writer (NLv2)
Implemented a more performant LP file writer (LPv2)
Applied PEP8 standards throughout the
codebase
Added support for Python 3.10, 3.11
Removed support for Python 3.6
Removed the pyomo check command
New packages:
- APPSI (Auto-Persistent Pyomo Solver Interfaces)
- CP (Constraint programming models and solver interfaces)
- DoE (Model based design of experiments)
- External grey box models
- IIS (Standard interface to solver IIS capabilities)
- MPC (Data structures/utils for rolling horizon dynamic optimization)
- piecewise (Modeling with and reformulating multivariate piecewise linear
  functions)
- PyROS (Pyomo Robust Optimization Solver)
- Structural model analysis
- Rewrite of the TrustRegion Solver

Changes in this release

ADVANCE CHANGE NOTICE
- This will be the last release to support Python 3.7.
General
- Fall back on multiprocessing.dummy when multiprocessing.Pool is not
  available (#2890)
- Clean up implicit function imports (#2892)
- Ensure all pyomo modules import without warnings (#2897)
- Resolve FileDownloader.get_os_version exception for missing
  lsb_release (#2911)
- Improve calculate_variable_from_constraint error messages (#2914)
- Add function for collecting expressions with unit inconsistencies (#2904)
- Fix loading Scalar Param from .dat file (#2923)
Core
- Resolve kernel pickle/clone errors (#2916)
- Reorganize numeric expression modules (#2909)
- Resolve error categorizing some Var discrete domains as "integer" (#2954)
- Named expressions: expr should always return NumericValue (#2948)
- Support kwargs in partial objects passed to Initializer() (#2960)
- Remove expr.current (#2910)
Documentation
- Fixing a 'that' vs. 'which' mistake in error about bounds crossing (#2950)
- Add Explicit Linting Instructions to PR Template (#2947)
- Update pyomo.common documentation (#2912)
- Remove HTML4 Forcing in Online Docs (#2949)
- Improved documentation for SOS (#2875)
- Silence deprecation warnings (#2854)
Solvers Interfaces
- Resolve handling of {}**0 in Linear/QuadraticRepn (#2857)
- Fix Linear/QuadraticRepnVisitor handling of {}**{float} (#2863, #2865)
- GAMS: fix pickling models, update tests (#2913)
- Xpress: fix NLP results processing for Xpress 9.2.0 (#2921)
- Improve NaN handling in LP, NL writers (#2930)
- Ensure constants written correctly to LP/NL files (#2953)
Testing
- Remove the 'singletest' job from "branches" builds (#2917)
- Reactivate NEOS-MOSEK Tests (#2870)
- New version of crate-ci/typos GitHub Actions (#2869, #2931)
DAE
- Improve error message when attempting to discretize models with circular
  references (#2943)
GDP
- Fixing a typo in gdp.hull transformation (#2915)
- Add some more instances to the GDP constrained layout example (#2838)
- Adding (reversible) gdp.transform_current_disjunctive_logic
  transformation (#2809)
Contributed Packages
- APPSI: change default behavior to not care where variables live (#2903)
- APPSI: Correctly Process Objective Bounds from Gurobi for Nonconvex QCPs
  (#2898)
- community_detection: fix networkx dependency in doctests (#2885)
- cp: Fix bug with land in contrib.logical_to_disjunctive transformation
  (#2879)
- DoE: Update tutorial notebook (#2889)
- incidence_analysis: Filter variables with non-constant, fixed expressions
  that resolve to zero in get_incident_variables (#2882)
- incidence_analysis: Correct behavior of linear_only argument in
  get_incident_variables (#2883)
- MindtPy: Refactor to improve extensibility and maintainability (#2887)
- PyNumero: Add PyNumeroEvaluationError (#2901)
- PyNumero: Make min and max work with MPIBlockVector when some blocks have
  size 0 (#2896)
- PyNumero: Remove old, unused PyNumero code (#2895)
- PyNumero: Fix typo in docstring (#2873)
- sensitivity_toolbox: Send lists to numpy.vstack rather than iterators
  (#2881)
- viewer: Fix model viewer (#2924)

pyomo - Pyomo 6.6.1

Published by jsiirola over 1 year ago

Highlights of the 6.0 release series

Improved stability and robustness of core Pyomo code and solver interfaces
Integration of Boolean variables into GDP
Integration of NumPy support into the Pyomo expression system
Implemented a more performant and robust expression generation system
Implemented a more performant NL file writer (NLv2)
Implemented a more performant LP file writer (LPv2)
Applied PEP8 standards throughout the codebase
Added support for Python 3.10, 3.11
Removed support for Python 3.6
Removed the pyomo check command
New packages:
- APPSI (Auto-Persistent Pyomo Solver Interfaces)
- CP (Constraint programming models and solver interfaces)
- DoE (Model based design of experiments)
- External grey box models
- IIS (Standard interface to solver IIS capabilities)
- MPC (Data structures/utils for rolling horizon dynamic optimization)
- piecewise (Modeling with and reformulating multivariate piecewise linear functions)
- PyROS (Pyomo Robust Optimization Solver)
- Structural model analysis
- Rewrite of the TrustRegion Solver

Changes in this release

General
- Update cmake builder for recent setuptools (#2847)
- Fixing minor formatting for 6.6.0 release changes (#2842)
- Silence deprecation warnings (#2854)
Core
- Update indentation handling in config.StringFormatter (#2853)
- Restore slice API broken by #2829 (#2849)
- Resolve handling of {}**0 in LinearRepn/QuadraticRepn (#2857)
Solver Interfaces
- NL writer: resolve error identifying vars in indexed SOS (#2852)
- Manage Gurobi environments in GurobiDirect (#2680)
Contributed Packages
- cp: fix handling fixed BooleanVars in logical-to-disjunctive walker (#2850)
- FBBT: Fix typo when handling GeneralExpression objects (#2848)
- MindtPy: add support for cyipopt (#2830)

pyomo - Pyomo 6.6.0

Published by blnicho over 1 year ago

Highlights of the 6.0 release series

Improved stability and robustness of core Pyomo code and solver interfaces
Integration of Boolean variables into GDP
Integration of NumPy support into the Pyomo expression system
Implemented a more performant and robust expression generation system
Implemented a more performant NL file writer (NLv2)
Implemented a more performant LP file writer (LPv2)
Applied PEP8 standards throughout the
codebase
Added support for Python 3.10, 3.11
Removed support for Python 3.6
Removed the pyomo check command
New packages:
- APPSI (Auto-Persistent Pyomo Solver Interfaces)
- CP (Constraint programming models and solver interfaces)
- DoE (Model based design of experiments)
- External grey box models
- IIS (Standard interface to solver IIS capabilities)
- MPC (Data structures/utils for rolling horizon dynamic optimization)
- piecewise (Modeling with and reformulating multivariate piecewise linear
  functions)
- PyROS (Pyomo Robust Optimization Solver)
- Structural model analysis
- Rewrite of the TrustRegion Solver

Changes in this release

General
- Remove pyomo check/pyomo.checker module (#2753)
- Improve formatting of docstrings generated from ConfigDict (#2754)
- Deprecate add_docstring_list (#2755)
- Reapply black to previously completed directories (#2775)
- Improve formatting for DeveloperError, MouseTrap messages (#2805)
Core
- Bugfix: component indexes specified as lists (#2765)
- Remove the use of weakrefs in SymbolMap (#2791)
- Improve conversions between Pyomo and Sympy expressions (#2806)
- Rework expression generation to leverage multiple dispatch (#2722)
- Improve robustness of calculate_variable_from_constraint() (#2812)
- Add support for infix Boolean logical operators (#2835)
- Improvements to Pyomo component iteration (#2829)
Documentation
- Copyright and Book Updates (#2750)
- Link documentation in incidence_analysis README (#2759)
- Update ReadtheDocs Configuration (#2780)
- Correct import in community.rst (#2792)
- Remove instructions for python <= 3.0 (#2822)
Solvers Interfaces
- NEOS: fix typo in kestrelAMPL.kill() argument (#2758)
- Better handling of mutable parameters in HiGHS interface (#2763)
- Improve linear data structure in NL writer (#2769)
- Bugfix for shared named expressions in NL writer (#2790)
- Resolve NPV constants in LinearExpressions in NL writer (#2811)
- GAMS/Baron: ensure negative numbers are parenthesized (#2833)
- Release LP version 2 (LPv2) writer (#2823, #2840)
Testing
- Rework Upload of Coverage Reports (#2761)
- Update constant for visitor tests for python 3.11.2 (#2799)
- Auto-Linting: Spelling Black Style Checker (#2800, #2818)
- Skip MOSEK tests on NEOS (due to unknown NEOS error) (#2839)
GDP
- Add gdp.bound_pretransformation (#2824)
Contributed Packages
- APPSI: Improve logging consistency across solvers (#2787)
- APPSI: Update available method in APPSI-Gurobi interface (#2828)
- DoE: Release version 2 (#2794)
- incidence_analysis: Remove strict usage of PyomoNLP (#2752)
- incidence_analysis: Test IndexedBlock (#2789)
- incidence_analysis: Use standard repn for incidence graph generation (#2834)
- Parmest: Update for pandas 2.0.0 release (#2795)
- piecewise: Add contrib.piecewise package (#2708, #2768, #2766, #2797, #2798,
  #2826)
- PyNumero: Refactor CyIpopt interface to subclass cyipopt.Problem (#2760)
- PyNumero: Fix CyIpopt interface when load_solutions=False (#2820)
- PyROS: Fixes to PyROS Separation Routine (#2815)
- PyROS: Fixes to Coefficient Matching and Timing Functionalities (#2837)

pyomo - Pyomo 6.5.0

Published by jsiirola over 1 year ago

Highlights of the 6.0 release series

Improved stability and robustness of core Pyomo code and solver interfaces
Integration of Boolean variables into GDP
Integration of NumPy support into the Pyomo expression system
Implemented a more performant NL file writer (NLv2)
Added support for Python 3.10, 3.11
Removed support for Python 3.6
New packages:
- APPSI (Auto-Persistent Pyomo Solver Interfaces)
- CP (Constraint programming models and solver interfaces)
- DoE (Model based design of experiments)
- External grey box models
- IIS (Standard interface to solver IIS capabilities)
- MPC (Data structures/utils for rolling horizon dynamic optimization)
- PyROS (Pyomo Robust Optimization Solver)
- Structural model analysis
- Rewrite of the TrustRegion Solver

Changes in this release

General
- Apply black to enforce PEP8 standards in certain modules (#2737, #2738,
  #2733, #2732, #2731, #2728, #2730, #2729, #2720, #2721, #2719, #2718)
- Add Developers' call information to README (#2665)
- Deprecate pyomo.checker module (#2734)
- Warn when infeasibility tools will not log output (#2666)
- Separate identification from logging in pyomo.util.infeasible.log_* (#2669)
- Convert subprocess timeout parameters to module attributes (#2672)
- Resolve consistency issues in the Bunch class (#2685)
- Remove GSL downloader from download-extensions (#2725)
- Update enhancement GitHub issue template to link to wiki (#2739)
- Add deprecation warning to pyomo command (#2740)
- Require version= for all deprecation utilities (#2744)
- Fix pyomo --version version string (#2743)
Core
- Fix minor typo: taht -> that in set.py (#2679)
- Fix bugs in scaling transformation (#2678)
- Rework handling of 'dimensionless' units in Pyomo (#2691)
Solver Interfaces
- Switch default NL writer to nlv2 and bug fixes (#2676, #2710, #2726)
- Enable MOSEK10 warm-start flag and relocate var initialization (#2647)
- Fix handling of POW in Baron writer (#2693)
- Update GAMS license check to avoid exception when not available (#2697)
Documentation
- Fix incorrect documentation for sending options to solvers (#2688)
- Fix Sphinx warnings (#2712)
- Document Python Version Support policy (#2735)
- Document deprecation and removal of functionality (#2741)
- Document docstring formatting requirements (#2742)
Testing
- Skip failing Baron tests (#2694)
- Remove residual nose references (#2736)
- Update GHA setup-python version (#2705)
- Improve GHA conda setup performance (#2701)
- Add unit test for QCQO problems with MOSEK (#2682)
DAE
- Fix typo in __init__.py (#2683)
- Add active filter to flattener (#2643)
GDP
- Add GDP-to-MIP transformation base class (#2687)
Contributed Packages
- DoE: New module for model-based design of experiments (#2294, #2711, #2527)
- FBBT: Add tolerances to tests (#2675)
- GDPopt: Switch a LBB test to use Gurobi as MINLP solver (#2686)
- incidence_analysis: Add plot method to IncidenceGraphInterface (#2716)
- incidence_analysis: Refactor to cache a graph instead of a matrix (#2715)
- incidence_analysis: Add documentation and update API (#2727, #2745)
- incidence_analysis: Add logging solve_strongly_connected_components (#2723)
- MindtPy: Refactor to improve extensibility and maintainability (#2654)
- Parmest: Suppress mpi-sppy output in import (#2692)
- PyNumero: Add tee argument to Pyomo-SciPy square solvers (#2668)
- PyNumero: Support implicit function solvers in ExternalPyomoModel (#2652)
- PyROS: Fix user_time and wallclock_time bug (#2670)
- PyROS: More judicious enforcement of PyROS Solver time limit (#2660, #2706)
- PyROS: Update documentation (#2698, #2707)
- PyROS: Adjust routine for loading DR polishing model solutions (#2700)
- Viewer: Update to support PySide6 and display units and domain (#2689)

pyomo - Pyomo 6.4.4

Published by mrmundt almost 2 years ago

Highlights of the 6.0 release series

Improved stability and robustness of core Pyomo code and solver interfaces
Integration of Boolean variables into GDP
Integration of NumPy support into the Pyomo expression system
Added support for Python 3.10, 3.11
Removed support for Python 3.6
New packages:
- APPSI (Auto-Persistent Pyomo Solver Interfaces)
- CP (Constraint programming models and solver interfaces)
- External grey box models
- IIS (Standard interface to solver IIS capabilities)
- MPC (Data structures/utils for rolling horizon dynamic optimization)
- PyROS (Pyomo Robust Optimization Solver)
- Structural model analysis
- Rewrite of the TrustRegion Solver

Changes in this release

General
- Convert txt to md files (CHANGELOG, LICENSE, RELEASE) (#2635)
- Parallelize build of manylinux wheels (#2636)
- Update source for Jenkins status badge (#2639, #2640)
- Update relocated_module_attribute to work with cythonized modules (#2644)
- Add utility methods to HierarchicalTimer (#2651)
Core
- Fix preservation of stale flags through clone/pickle (#2633)
- Add support for local suffixes in scaling transformation (#2619)
Solver Interfaces
- Fix handling of nonconvex MIQCP problems in Xpress (#2625)
Testing
- Update GitHub actions to cancel jobs when new changes are pushed (#2634)
- Remove requirement for a pyutilib directory in Jenkins driver (#2637)
- Enable GitHub actions build on Windows Python 3.11 (#2638)
- Add build services infrastructure status badge (#2646)
- Add version upper bound on MOSEK warmstart test skip (#2649)
- Improve compare.py handling of nosetests/pytest output (#2661)
GDP
- Add option to use multiple-bigm only on bound constraints (#2624)
- Add logical_to_disjunctive and replace uses of logical_to_linear (#2627)
Contributed Packages
- FBBT: Fix bug with ExternalFunction expressions (#2657)
- PyROS: Fix uncertain param bounds evaluation for FactorModelSet (#2620)
- PyROS: Add origin attribute to BudgetSet (#2645)
- PyROS: Fix UncertaintySet.bounding_problem method (#2659)

pyomo - Pyomo 6.4.3

Published by jsiirola almost 2 years ago

Highlights of the 6.0 release series

Improved stability and robustness of core Pyomo code and solver interfaces
Integration of Boolean variables into GDP
Integration of NumPy support into the Pyomo expression system
Added support for Python 3.10, 3.11
Removed support for Python 3.6
New packages:
- APPSI (Auto-Persistent Pyomo Solver Interfaces)
- CP (Constraint programming models and solver interfaces)
- External grey box models
- IIS (Standard interface to solver IIS capabilities)
- MPC (Data structures/utils for rolling horizon dynamic optimization)
- PyROS (Pyomo Robust Optimization Solver)
- Structural model analysis
- Rewrite of the TrustRegion Solver

Changes in this release

General
- Update PauseGC to work in nested contexts (#2507)
- Simplify deepcopy/pickle logic to speed up model clone (#2510)
- Fix generate_standard_repn to handle unexpected NPV expressions (#2511)
- Add thread safe proxies for PauseGC, TempFileManager singletons (#2514)
- Fix ConstructionTimer bug for components indexed by nonfinite sets (#2518)
- Add calculate_variable_from_constraint differentiation mode option (#2549)
- Update URL for downloading GSL and GJH (#2556, #2588)
- Update logic for retrying failed downloads (#2569)
- Add support and testing for Python 3.11 (#2596, #2618)
- Update deprecation utilities to improve user messages (#2606)
Core
- Refactor expression hierarchy, add RelationalExpression base class (#2499)
- Support cloning individual blocks (#2504)
- Block performance improvements (#2508)
- Add support for creating a slice to a single ComponentData object (#2509)
- Fix missing import of value in pyomo.core.base.external (#2525)
- Improve handling of restricted words on Blocks (#2535)
- Improve Reference() performance (#2537)
- Fix mapping gradient/hessian for external functions with string args (#2539)
- Fix bug for sum_product(Var, Param, Param) (#2551)
- Add deprecation path for expression objects moved to relational_expr (#2554)
- Exception when setting value of Expression to non-numeric expression (#2567)
- Improve deepcopy performance (#2628)
Documentation
- Fix examples in working_models.rst (#2502)
Solver Interfaces
- Improve SCIP results object (#2462)
- Improve warning message when LP writer raises KeyError (#2497)
- Fix Gurobi work limit bug (#2530)
- Updates and fixes for the NLv2 writer (#2540, #2622, #2568)
- Fix Xpress when stopped due to MAXTIME or MAXNODES (#2553)
- Add support for MOSEK 10 affine conic constraints (#2557)
- Fix missing explicit space in GAMS put command (#2578)
- Fix GAMS logfile storage location (#2580)
- LP writer performance improvements (#2583, #2585)
- Update handling of MOSEK Env and Python module (#2591)
- Release MOSEK license when optimize raises a mosek.Error (#2593)
- Update list of allowable characters in CPLEX filenames (#2597)
Testing
- Update performance driver to be usable outside of Pyomo (#2505)
- Update the performance test driver (#2538)
- Reduce amount of environment code cached in GitHub actions (#2565)
- Update GitHub actions versions from v2 to v3 (#2566)
- Allow nan to compare equal in assertStructuredAlmostEqual() (#2582)
- Add test utilities for comparing expressions (#2590)
- Skip a test in MOSEK 10 due to a bug in warm starting MIQPs (#2614)
- Update skipped CBC test that works with CBC 2.10.6 (#2615)
- Add SCIP to GitHub actions environment (#2602)
GDP
- Use OrderedSet instead of list in GDPTree to improve performance (#2516)
- Reduce calls to logical_to_linear in GDP transformations (#2519)
- Add utility for gathering BigM values after transformation (#2520)
- Add tighter logical constraints in transformations of nested GDPs (#2550)
- Fix pickling of transformed GDP models (#2576)
- Add multiple-bigM transformation (#2592)
- Improve performance of BigM transformation (#2605)
- Remove weakref mapping Disjunctions to their algebraic_constraint (#2617)
Contributed Packages
- APPSI: Fix exception raised by appsi_gurobi during Python shutdown (#2498)
- APPSI: Improve handling of Gurobi results (#2517)
- APPSI: Add interface to HiGHS solver (#2561)
- APPSI: Only release Gurobi license after deleting all instances (#2599)
- APPSI: Patch IntEnum to preserve pre-3.11 formatting (#2607)
- CP: New package for constraint programming (#2570, #2612)
- GDPopt: Add warning when reporting results from LBB (#2534)
- GDPopt: Delete dummy objective when we're done using it (#2552)
- GDPopt: Add enumerate solution approach (#2559, #2575)
- IIS: Add package for computing the IIS of an infeasible Pyomo model (#2512)
- MindtPy: Fix bug in termination condition (#2587)
- MindtPy: Fix bug in checking absolute and relative gap (#2608)
- MPC: Data structures/utils for rolling horizon dynamic optimization (#2477)
- Parmest: Solve square problem to initialize regression problem (#2438)
- Parmest: Return ContinuousSet values from theta_est() (#2464)
- PyNumero: Fix NumPy deprecation warnings (#2521)
- PyNumero: Add interfaces to SciPy square solvers (#2523)
- PyNumero: Check AmplInterface availability in SciPy solver tests (#2594)
- PyNumero: Add ProjectedExtendedNLP class (#2601)
- PyNumero: Add interface to SciPy scalar Newton solver (#2603)
- PyROS: Rewrite UncertaintySet docstrings/improve validation (#2488)
- PyROS: Updates to subproblem initialization and solver call routines (#2515)
- PyROS: Fix collection of sub-solver solve times (#2543)

pyomo - Pyomo 6.4.2

Published by jsiirola about 2 years ago

Highlights of the 6.0 release series

Improved stability and robustness of core Pyomo code and solver interfaces
Integration of Boolean variables into GDP
Integration of NumPy support into the Pyomo expression system
Added support for Python 3.10
Removed support for Python 3.6
New packages:
- APPSI (Auto-Persistent Pyomo Solver Interfaces)
- External grey box models
- PyROS (Pyomo Robust Optimization Solver)
- Structural model analysis
- Rewrite of the TrustRegion Solver

Changes in this release

General
- Resolve dill incompatibility with attempt_import (#2419)
- Speed up book tests and improve import/logging infrastructure (#2449)
- Make typing overloads available at runtime (#2471)
- Update list of known TPLs to reflect Python 3.10 (#2478)
- Add NL writer version 2 but don't activate by default (#2473)
- Add deprecation.relocated_module utility (#2492)
Core
- Support cython functions through Initializer (#2421)
- Ensure UnindexedComponent_set is correctly pickled/restored (#2416)
- Update as_numeric() to raise an exception on non-is_numeric_type() Pyomo
  objects (#2444)
- replace_expressions: support replacing variables with constants (#2410)
- Update component_data_objects and component_data_iterindex to not
  return duplicate data (#2456)
- Fix exception handling logic bug in quicksum (#2458)
- Reduce recursion in model clone/deepcopy (#2487)
- Resolve exception cloning empty LinearExpression objects (#2489)
- Resolve errors from inplace operators on Expression objects (#2493)
Documentation
- Fix typos and incorrect link (#2420, #2482)
- Fix Sphinx warnings in documentation builds (#2434)
Solver Interfaces
- Add support for SCIP 8.0 (#2409)
- Add explicit space to GAMS put statements to support GAMS 39+ (#2450)
- Catch exceptions in BARON interface when parsing objective bounds (#2467)
Testing
- Skip SCIP 8.0 tests on PyPy (#2424)
- Force conda to use conda-forge channel in GHA (#2430)
- Fix GHA win/3.10 Python version inconsistency (#2433)
- Enable Pyomo.DAE Simulator tests on PyPy (#2443)
- Abort the Jenkins build if virtualenv creation fails (#2451)
- Remove scipy from GHA PyPy builds (#2474)
- Move performance testing driver scripts to scripts/performance (#2476)
- Improve common.timing test robustness (#2490)
Contributed Packages
- APPSI: Improve error message in nl writer when all variables fixed (#2407)
- APPSI: Fix bug in Gurobi interface when modifying the objective (#2454)
- APPSI: Solve blocks that use variables that are not on the block (#2453)
- APPSI: Method to release Gurobi license from persistent interface (#2480)
- community_detection: Trap exceptions from networkx (#2415)
- FBBT: Add tolerances to tests (#2445)
- GDPopt: Refactor to improve extensibility and maintainability (#2406)
- incidence_analysis: Add method for weakly connected components (#2418)
- MindtPy: Fix bug in copying variable values between models (#2432)
- MindtPy: Add support for appsi_cplex and appsi_gurobi (#2373)
- Parmest: Add utils submodule and support to convert Params to Vars (#2352)
- Parmest: Fix use of relocated_module_attribute (#2472)
- PyROS: Fixes to ellipsoidal sets (#2425)
- PyROS: Account for variable domains (#2426)
- PyROS: Fix objective validation (#2371)
- PyROS: Avoid master feasibility problem unit consistency checks (#2459)
- PyROS: Fix discrete uncertainty set separation (#2469)
- PyROS: Update exception handling parsing BARON lower/upper bounds (#2486)

pyomo - Pyomo 6.4.1

Published by jsiirola over 2 years ago

Highlights of the 6.0 release series

Improved stability and robustness of core Pyomo code and solver interfaces
Integration of Boolean variables into GDP
Integration of NumPy support into the Pyomo expression system
Added support for Python 3.10
Removed support for Python 3.6
New packages:
- APPSI (Auto-Persistent Pyomo Solver Interfaces)
- External grey box models
- PyROS (Pyomo Robust Optimization Solver)
- Structural model analysis
- Rewrite of the TrustRegion Solver

Changes in this release

General
- Extend linux distribution map logic (#2361)
- Improve string processing in ConfigList, ConfigDict, and ListOf (#2360)
- Update copyright assertion (#2368, #2378)
- Deprecate name_buffer argument to getname (#2370)
- Defer construction of the main Pyomo parser (#2385)
- Improve error checking parsing ConfigDict string value (#2399)
Core
- Add indices to ComponentData objects (#2351)
- Ignore SetOf, BuildAction, and BuildCheck when checking units (#2366)
- Improve support for absolute value in differentiation and FBBT (#2347)
- Allow relative tolerance when comparing unit dimensionality (#2395)
Solver Interfaces
- Fix bug in GLPK solver plugin (#2348)
- Update BARON solution parser (#2367)
Testing
- Turn on failure for codecov-action (#2343)
- Fixes to GHA due to updates to Ubuntu runner and Conda (#2356, #2384, #2396)
- Update setup-python and pypy in GHA (#2364)
- Pin version of openmpi used for testing (#2369)
DAE Updates
- Fix typo preventing a DAE test from running (#2349)
Contributed Packages
- APPSI: Minor improvements and generalizations (#2383, #2386, #2389, #2391, #2388, #2392)
- incidence_analysis: Add option to ignore inequality constraints in IncidenceGraphInterface (#2350)
- MC++: Update interface tests (#2400)
- MindtPy: Add quadratic_strategy option to pass quadratic constraints or objectives to MIP solvers (#2338)
- Parmest: Skip tests when seaborn and matplotlib are missing (#2394)
- PyROS: Improve feasibility problem formulation, objective validation (#2353, #2371)

pyomo - Pyomo 6.4.0

Published by jsiirola over 2 years ago

Highlights of the 6.0 release series

Improved stability and robustness of core Pyomo code and solver interfaces
Integration of Boolean variables into GDP
Integration of NumPy support into the Pyomo expression system
Added support for Python 3.10
Removed support for Python 3.6
New packages:
- APPSI (Auto-Persistent Pyomo Solver Interfaces)
- External grey box models
- PyROS (Pyomo Robust Optimization Solver)
- Structural model analysis
- Rewrite of the TrustRegion Solver

Changes in this release

General
- Distribute the ampl_function_demo C source / cmake files (#2319)
- Add GitHub URL to setup.py for PyPI (#2325)
- Use constant indentation for long lines in the HierarchicalTimer (#2336)
Core
- Remove incomplete pyomo/core/base/alias.py module (#2284)
- Remove Python 3.6 support (#2312)
Solver Interfaces
- Remove PICO solver interface (#2341)
Testing
- Add Windows pip single test (#2334)
- Fix test docstrings in piecewise to silence warnings (#2342)
Contributed Packages
- APPSI: Update Gurobi solver unavailable message (#2320)
- APPSI: Remove distributables for Windows (#2326)
- APPSI: Fix bugs when working with the Gurobi solution pool (#2335)
- APPSI: Fix bug in persistent update for FBBT (#2340)
- Preprocessing: Stop using polynomial_degree to check for linear and
  constant expressions (#2324)
- PyNumero: Improve coverage of mpi block matrix tests (#2318)
- PyNumero: Skip bound/domain validation in ExternalPyomoModel (#2323)
- PyNumero: Remove deprecated useage of numpy.bool (#2339)
- PyROS: Fix variable default initialization (#2331)

pyomo - Pyomo 6.3.0

Published by jsiirola over 2 years ago

Highlights of the 6.0 release series

Improved stability and robustness of core Pyomo code and solver interfaces
Integration of Boolean variables into GDP
Integration of NumPy support into the Pyomo expression system
Added support for Python 3.10
New packages:
- APPSI (Auto-Persistent Pyomo Solver Interfaces)
- External grey box models
- PyROS (Pyomo Robust Optimization Solver)
- Structural model analysis
- Rewrite of the TrustRegion Solver

Changes in this release

ADVANCE CHANGE NOTICE
- This will be the last release to support Python 3.6.
General
- Construct slices with normalized indices in slicing utility (#2223)
- Remove hard-coded project name from default attempt_import() message (#2237)
- Add --with-distributable-extensions option to setup.py (#2260)
- Update Pyomo versioning to always include the micro version number (#2265)
- Remove optional_packages from pyomo.environ (#2195)
- Add Python 3.10 as an officially-supported interpreter (#2302)
- TempfileManager updates (deletion order, add context) (#2297)
- Add report_scaling utility to detect potential scaling issues (#2252)
Core
- Check Var bounds when setting values (#2196)
- Fix bug in implicit Var construction (#2210)
- Add support for user-defined Component List starting index (#2215)
- Switch Var.value setter to validate values (#2214)
- Overload component initializers with named keyword params (#2212, #2230)
- Resolve errors when creating Reference to a scalar Set (#2229)
- Standardize scalar-valued external function interfaces (#2231)
- Resolve bugs in cloning _ImplicitAny domains (#2233)
- Redesign Var.stale handling to use a global state flag (#2249)
- Update differentiate() to accept string mode identifiers (#2266)
- Add as_quantity: evaluate a Pyomo expression to a pint Quantity (#2222)
- NPV_SumExpression to inherit from NPV_Mixin (#2209)
- Add support for abs in numeric differentiation (#2232)
- Search filesystem for AMPLExternalFunction library (#2305)
Documentation
- Updates to installation documentation (#2259)
- Update GDP references (#2300)
- Add example AMPL external function library (#2295)
Solver Interfaces
- Disable log file in gurobi_direct when keepfiles=False (#2203)
- Remove old GLPK interfaces (#2256)
- Support gurobi lp interface through gurobipy module (#2262)
- Update CBC version identification (#2250)
- Increase CBC timeout when getting version/asl compatibility (#2293)
- Deprecate the Alias component (#2288)
- Remove XPRESS interface (#2273)
- Support string arguments in NL external functions (#2295)
- Fix reversed NL operator codes for floor/ceil (#2216)
Testing
- Skip some fileutils tests on OSX Big Sur and Python<3.8 (#2224)
- Fix Windows/Python 3.6 testing dependency (#2234)
- Update test suite for BARON 22.1.19 (#2268)
- Rework coverage uploads to use GitHub Actions (#2225)
- Add option to test driver for turning off log capture (#2198)
- Relaxing timing target for Windows GHA (#2303)
- Resolve GDP test failure for missing solvers (#2306)
- Testing infrastructure Refactor: nosetests to pytest (#2298)
- Make time limit more robust for APPSI (#2296)
- Resolve failing floating-point comparison failures in FBBT (#2244)
- Check gurobipy availability in doctests (#2253)
GDP Updates
- Ensure gdp.fix_disjuncts always creates a fully algebraic model (#2263)
- Add partition_disjuncts and between_steps transformations (#2221)
Contributed Packages
- APPSI: Fix bug with CBC options (#2243)
- APPSI: Correctly identify changes to constraints (#2299)
- APPSI: Improvements to persistent interface (#2246)
- APPSI: Implement FBBT in C++ module (#2248)
- APPSI: Resolve build errors on Windows (#2309)
- GDPopt: Fix bugs in preprocessing (#2211)
- GDPopt: Switch preprocessing to use FBBT (#2264)
- incidence_analysis: General improvements (#2239, #2240)
- MindtPy: Update online docs and logging (#2219, #2207)
- MindtPy: Add Primal/Dual Integral (#2285)
- MindtPy: Nonlinear sum reformulation of objective of MINLP (#2276)
- Parmest: Covariance matrix (#2287), Add examples (#2274)
- PyNumero: Add scaling factor support to ExternalPyomoModel (#2269)
- PyNumero: Use projected NLPs for ExternalPyomoModel inner problems (#2283)
- PyNumero: Add SQP example (#2291)
- PyROS: Support ConstraintList and range constraints (#2206)
- PyROS: Add optional bypassing of global separation subproblems (#2254)
- TrustRegion: New implementation of Trust Region Framework (#2238, #2279)