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News for EAGO releases

v0.1.1

  • 4/12/2018: Initial release of combined EAGO packages v0.1.1.

v0.1.2

v0.2.0

  • 6/14/2019: EAGO v0.2.0 has been tagged. This update creates a number of breaking changes to the EAGO API. Please review the use cases provided in the documentation to update examples.
    • Updated to support Julia 1.0+, MathOptInterface (MOI), and MOI construction of subproblems.
    • Additional domain reduction routines available.
    • Support for specialized handling of linear and quadratic terms.
    • Significant performance improvements due to pre-allocation of Wengert tapes and MOI support.
    • A more intuitive API for McCormick relaxation construction.

v0.2.1

  • 7/5/2019: EAGO v0.2.1 has been tagged. This contains fixes for a few minor issues.
    • Bug fix for explicit SIP solving routine that occurred for uncertainty sets of dimension greater than 1.
    • Bug fix for Max objective sense.

v0.3.0

  • 11/1/2019: EAGO v0.3.0 has been tagged: This update is intended to be the last to create a large number of breaking changes to the EAGO API. Please review the use cases provided in the documentation to update examples.
    • A number of performance improvements have been made to the underlying McCormick relaxation library.
    • The optimizer used to construct relaxations is now modified in place.
    • All subproblem storage has been moved to the Optimizer object and storage types (e.g. LowerInfo) have been removed.
    • A MinMax heap structure is now used to store nodes.
    • Speed and aesthetics for logging and printing utilities have been updated.
    • Subroutines are now customized by creating a subtype of 'ExtensionType' and defining subroutines which dispatch on this new structure.
    • Parametric interval methods and the Implicit optimizer have been move to a separate package (to be tagged shortly.)
    • JIT compilation time has been reduced substantially.
    • Support for silent tag and time limits.

v0.4.0

  • 6/7/2020: EAGO v0.4.0 has been tagged.
    • Support for new MOI/JuMP RawParameter input and a number of new attributes.
    • Separates McCormick and ReverseMcCormick libraries (now McCormick.jl and ReverseMcCormick.jl) from main package. McCormick.jl is reexported.
    • Relaxation calculations now return NaN values on a domain violation.
    • Tolerance based validation of cuts has been added to generate numerically safe cuts.
    • Significantly simplify internal codebase for EAGO.Optimizer (no changes to API): fully decouples input problem specifications from the formulation used internally, stack only stores variables that are branched on, and a number of internal rearrangements to clearly delineate different routines.
    • Add problem classification preprocessing that throws to simpler routines if LP problem types are detected (enables future support for SOCP, MILP, MISOCP, and Convex forms).
    • Fix multiple bugs and add more transparent error codes.
    • 06/17/2020: EAGO v0.4.1 has been tagged Contains minor bug releases.
    • 08/29/2020: EAGO v0.4.2 has been tagged Support for Julia v1.5.

v0.5.0

  • 11/18/2020: EAGO v0.5.0 has been tagged
    • Introduces the register_eago_operators!(m::JuMP.Model) which can be used to register all nonstandard nonlinear terms used in EAGO in any JuMP model.
      • Introduces positive, negative, lower_bnd, upper_bnd, and bnd functions which can be used to enforce bounds on intermediate terms in nonlinear expressions (EAGO.Optimizer only).
      • Adds envelopes: abs2, sinpi, cospi, fma, cbrt.
      • Adds envelopes and functions: xlogx
      • Adds envelopes of special functions: erf, erfc, erfinv, erfcinv
      • Adds envelopes of activation functions: relu, gelu, elu, selu, swish1,sigmoid, softsign, softplus,bisigmoid, pentanh, leaky_relu, param_relu.
      • Error messages in sip_explicit have been made more transparent.
      • Fixes some issues with documentation image rendering and links.
      • Drops appveyor CI and Travis CI in favor of Github Actions.
  • 11/18/2020 EAGO v0.5.1 has been tagged
    • Support for Julia ~1 (with limited functionality for Julia 1.0, 1.1).
  • 11/18/2020 EAGO v0.5.2 has been tagged
    • Fix user specified branching variables.

v0.8.0