ensmallen 2.21.1: "Bent Antenna"

Released Feb. 15, 2024.

• Fix numerical precision issues for small-gradient L-BFGS scaling factor computations (#392).

• Ensure the tests are built with optimisation enabled (#394).

ensmallen 2.21.0: "Bent Antenna"

Released Nov. 27, 2023.

• Clarify return values for different callback types (#383).

• Fix return types of callbacks (#382).

• Minor cleanup for printing optimization reports via Report() (#385).

ensmallen 2.20.0: "Stripped Bolt Head"

Released Oct. 4, 2023.

• Implementation of Active CMAES (#367).

• LBFGS: avoid generation of NaNs, and add checks for finite values (#368).

• Fix CNE test tolerances (#360).

• Rename SCD optimizer, to CD (#379).

ensmallen 2.19.1: "Eight Ball Deluxe"

Released Feb. 7, 2023.

• Avoid deprecation warnings in Armadillo 11.2+ (#347).

ensmallen 2.19.0: "Eight Ball Deluxe"

Released Apr. 10, 2022.

• Added DemonSGD and DemonAdam optimizers (#211).

• Fix bug with Adam-like optimizers not resetting when resetPolicy is true. (#340).

• Add Yogi optimizer (#232).

• Add AdaBelief optimizer (#233).

• Add AdaSqrt optimizer (#234).

• Bump check for minimum supported version of Armadillo (#342).

ensmallen 2.18.2: "Fairmount Bagel"

Released Feb. 14, 2022.

• Update Catch2 to 2.13.8 (#336).

• Fix epoch timing output (#337).

ensmallen 2.18.1: "Fairmount Bagel"

Released Nov. 20, 2021.

• Accelerate SGD test time (#330).

• Fix potential infinite loop in CMAES (#331).

• Fix SCD partial gradient test (#332).

ensmallen 2.18.0: "Fairmount Bagel"

Released Oct. 21, 2021.

• Add gradient value clipping and gradient norm scaling callback (#315).

• Remove superfluous CMake option to build the tests (#313).

• Bump minimum Armadillo version to 9.800 (#318).

• Update Catch2 to 2.13.7 (#322).

• Remove redundant template argument for C++20 compatibility (#324).

• Fix MOEAD test stability (#327).

ensmallen 2.17.0: "Pachis Din Me Pesa Double"

Released Jul. 6, 2021.

• CheckArbitraryFunctionTypeAPI extended for MOO support (#283).

• Refactor NSGA2 (#263, #304).

• Add Indicators for Multiobjective optimizers (#285).

• Make Callback flexible for MultiObjective Optimizers (#289).

• Add ZDT Test Suite (#273).

• Add MOEA-D/DE Optimizer (#269).

• Introduce Policy Methods for MOEA/D-DE (#293).

• Add Das-Dennis weight initialization method (#295).

• Add Dirichlet Weight Initialization (#296).

• Improved installation and compilation instructions (#300).

• Disable building the tests by default for faster installation (#303).

ensmallen 2.16.2: "Severely Dented Can Of Polyurethane"

Released Mar. 25, 2021.

• Fix CNE test trials (#267).

• Update Catch2 to 2.13.4 (#268).

• Fix typos in documentation (#270, #271).

• Add clarifying comments in problems/ implementations (#276).