Release History

The notes here are a summary from Sageopt’s changelog. Each item in the lists that follow is prefaced by a term like “coniclifts”, “symbolic”, or “relaxations”; these terms indicate the primary subpackage of sageopt which was affected.

[0.5.3] - 2020-09-07

Changed

  • coniclifts: Fix regression introduced in 0.5.2 (optimization based dimension reduction was inadvertently disabled).

  • coniclifts: Remove an unstated assumption in the relent.py precompiled atom.

  • coniclifts: Minor change to how DualSageCones compute violations.

[0.5.2] - 2020-07-05

Changed

  • coniclifts: heavily refactor precompiled affine atoms.

  • relaxations: dual SAGE relaxations no longer introduce high-level slack variables by default.

Added

  • coniclifts: the mosek interface now automatically performs low-level dualization for certain problems.

  • coniclifts: prob.solve accepts an argument to override or force dualization (when using MOSEK).

[0.5.1] - 2020-06-21

Removed

  • coniclifts: compile_linear_expression.

Changed

  • symbolic: signomials now broadcast in certain arithmetic with ndarrays.

Added

  • coniclifts: “abs” and “pos” NonlinearScalarAtoms.

  • coniclifts: a field “age_witnesses” to PrimalSageCone objects.

  • coniclifts: compile_objective.

  • coniclifts: an option to eliminate all equality constraints when compiling a PrimalSageCone.

  • coniclifts: PrimalSageCone violation now computed by evaluating the support function of X.

  • symbolic: SigDomain objects have a suppfunc method, to evaluate support function.

[0.5.0] - 2020-03-25

Removed

  • coniclifts: private compilation constants (e.g. _REDUCTION_SOLVER_) in sage_cones.py

  • coniclifts: private solver parameters (e.g. _DEACTIVATE_SCALING) in mosek.py

Changed

  • symbolic: Signomials are now represented primarily by arrays, rather than a dictionary.

  • symbolic: Signomial and Polynomial constructors: both parameters alpha and c are required.

Added

  • symbolic: Signomial.from_dict and Polynomial.from_dict convenience functions for construction.

  • relaxations: keyword argument checking in sig_constrained_relaxation and poly_constrained_relaxation.

  • coniclifts: an option to reduce epigraph variable usage in dual SAGE relaxations.

  • coniclifts: mixed-integer support for MOSEK.

  • coniclifts: PrimalSageCone.settings and DualSageCone.settings: dictionary-valued properties which record compilation settings (e.g. pre-solve behavior)

  • coniclifts: Properly expose all MOSEK solver options.

  • interop: Proper tests for GPKit integration.

  • interop: CVXPY integration.

[0.4.2] - 2019-11-18

Changed

  • symbolic: Signomial.partial and Polynomial.partial to correctly work with nonconstant coefficients.

  • symbolic: Essentially all “attributes” of Signomial or Polynomial objects have become “properties”.

Added

  • sageopt: sageopt.interop a subpackage for interacting with other python projects.

  • symbolic: A metadata field to Signomial and Polynomial objects.

[0.4.1] - 2019-10-13

Removed

  • coniclifts: Variable.set_scalar_variables.

  • coniclifts: The name field of the ScalarVariable class.

  • coniclifts: Some unused functions in coniclifts.base.ScalarAtom.

Changed

  • symbolic: Fixed a bug in SigDomain and PolyDomain.

  • relaxations: Fixed a bug in the function clcons_from_standard_gprep.

  • coniclifts: Variable.value is now a settable property.

Added

  • coniclifts: An index field to the ScalarVariable class.

  • coniclifts: A _DEACTIVATE_SCALING_ static attribute in the Mosek class.

[0.4.0] - 2019-10-06

Removed

  • sageopt: sig_primal, sig_dual, poly_primal, poly_dual (and the four constrained variations thereof) as top-level imports within sageopt. These should have been removed in v0.3.4.

  • coniclifts: conditional_sage_cone.py

  • coniclifts: sage_cone.py.

Changed

  • relaxations: conditional_sage_data is now infer_domain.

  • relaxations: The signature of sig_relaxation and sig_constrained_relaxation.

  • relaxations: Fixed a bug in conditional_sage_data (now, infer_domain). Equality constraints were being incorrectly compiled into weaker forms.

  • coniclifts: Conditional SAGE constraints now assume that the “conditioning” is feasible.

  • coniclifts: The var_name_to_locs dict from coniclifts.compilers.compile_constrained_system.

  • coniclifts: Several fields in the coniclifts.Problem class.

  • coniclifts: How ElementwiseConstraint objects report their variables.

Added

  • symbolic: SigDomain and PolyDomain classes, to represent “X” with conditional SAGE cones.

  • coniclifts: sage_cones.py.

  • coniclifts: the option to eliminate trivial AGE cones from SAGE relaxations.

  • coniclifts: the option to allow AGE vectors to sum <= c, or == c. The default is <= c.

[0.3.4] - 2019-09-09

Changed

  • coniclifts: Major changes to the compilation process. Refer to commit 7cb07866e55c6618ce17d090d52281512ea2351f.

Added

  • relaxations: sig_relaxation and sig_constrained_relaxation (and variants for polynomial problems).

[0.3.3] - 2019-08-10

Changed

  • relaxations: Updated polynomial magnitude recovery to be consistent with the latest version of the arXiv paper.

  • coniclifts: Constraint violation computations (to resolve several syntax bugs which showed up in version 0.3.2).

Added

  • relaxations: An option for the user to specify skipping constrained least-squares step of solution recovery.

  • coniclifts: unittests for primal and dual SAGE cone constraint violations.

[0.3.2] - 2019-07-12

Changed

  • coniclifts: Expression objects get value by .value instead of .value()

  • coniclifts: fixed a bug in __contains__ for coniclifts PrimalCondSageCone

[0.3.1] - 2019-07-09

Changed

  • relaxations: least-squares solution recovery for polynomial problems.

  • coniclifts: conditional SAGE cones with m=2 were being compiled into overly restrictive terms, this is now fixed.

Added

  • relaxations: Documentation to helper functions defined in sageopt.relaxations init file.

  • relaxations: Some unittests for conditional sage polynomials.

[0.3.0] - 2019-06-30

Removed

  • symbolic: Removed the ability to call signomials in geometric format.

  • relaxations: Removed the local_refine implementation for polynomials.

Changed

  • relaxations: Changed references to “AbK” and “logAbK” in user-facing functions to “X”.

Added

  • Several functions as top-level imports in sageopt.

  • symbolic: Added as_signomial function to Polynomial objects.

  • symbolic: Added log_domain_converter to sage_polys.py.

  • relaxations: a function local_refine_polys_from_sigs.

  • relaxations: Track the constraint functions which generate the set X in conditional SAGE relaxations.

[0.2.0] - 2019-05-24

Bumping version from 0.1 to 0.2, because I’ve made a ton of changes to 0.1 without noting them in a changelog. This is effectively me starting from scratch with version numbers, in preparation for a public release.

Added

  • This changelog.md file.

  • A README file.

  • License information.