smoof 1.7.0

New features

• Added support for the extended bi-objective BBOB functions (FIDs 56-92) in makeBiObjBBOBFunction
• Added extra helper functions to extract all problem instance-specific data from MPM2 generator
• Added R-based evaluation environment for MPM2 generator which greatly accelerates evaluation in multi-objective settings
• Added support for single- and multi-objective NK-landscapes
• Sanity checks for smoof functions evaluations are now optional (you may set the option smoof.check_input_before_evaluation to FALSE in order to deactivate those checks). This can lead to significant speed ups when a function is evaluated many times

Bugfixes

• Fixed bug in getLoggedValues when logging of x-values was set to FALSE in addLoggingWrapper
• Fixed bug with instance ID mapping in makeBiObjBBOBFunction
• Fixed some documentation issues

smoof 1.6.0.3

New features

• Added MMF1 to MMF13 problems from CEC2019 test suite
• Added SYM-Part simple, SYM-Part rotated and Omni-Test problems from CEC2019 test suite
• Added MMF14, MMF14a, MMF15 and MMF15a problems from CEC2019 test suite
• Added parameter size to addLoggingWrapper for improved performance
• getLoggedValues now correctly names function parameters.
• BBOB test function now return an ID.
• Changed: moved from rPython and RJSONIO to reticulate
• Added vectorization to the MPM2 generator

Bugfixes

• Fixed a bub in Machalewicz function (dimension was ignored when building parameter set)
• Fix name of Powell Sum generator function.

Miscellaneous

• Various packages moved from Imports to Suggests for less dependencies.

smoof 1.6.0

New features

• Added bi-objective BBOB problem generator: makeBiObjBBOBFunction
• Added: Kursawe function
• Added: ED1 and ED2 functions
• Added: WFG1 to WFG9 problems from the WFG-Problem Generator Toolkit
• Changed: renamed argument dimension to dimensions (this should not cause any problems with existing code)
• Changed: replaced geom_tile with geom_raster

smoof 1.5.1

New features

• Added: Shekel function
• Added: inverted Vincent function
• Added: modified Rastrigin function
• Added: Hartmann{3,4,6} functions

Bugfixes

• Better handling of additional arguments in makeFunctionsByName
• convertTo{Minimization,Maximization} now flips sign of optima

Miscellaneous

• logging and couting wrapper now have class smoof_function

smoof 1.5

New features

• Added shortcuts {s,m}nof for generating single-/multi-objective objective functionswith numeric parameters only
• Added: missing single-objective tag for BBOB functions
• Added: log.scale argument for autoplot
• Added: CITATION file

Bugfixes

• Fixed: precision issue caused by rPython respectively RJSONIO::toJSON, which by default strips numeric values to only 4 digits.
• Fixed: ggplot2 warnings
• Fixed: wrong lower bound in MOP3 test function
• Fixed: issue in definition of Cosine Mixture Function due to faulty online sources
• Fixed: issue with min<->max conversion if functions has.simple.signature = FALSE and explicit return statement was used.
• Fixed: mean function was not set properly for noisy functions
• Improved docs slighly

smoof 1.4

New features

• Added makeGOMOPFunction to create multi-objective test function based on a set of single objective functions.
• Added new single-objective functions: Branin (modified version by Forrester et al. (2008))
• Added new multi-objective functions: Van Valedhuizen’s test suite (MOP1-7), Binh-Korn function, BiSphere (bi-objective Sphere), Dent function, Viennet function.
• Added first mixed parameter space funtion: Zhou2011
• visualizeParetoOptimalFront now draws lines instead of points
• Added possibility to draw interactive 3D surface plots via smoof::plot3D(fn, package = “plotly”)

Bugfixes

• Fixed: issue in formula and global optimum of BukinN2 function
• overworked and refactored autoplot functions
  • dropped use.facets parameter (always use facets now if discrete parameters exist)
  • We now support mixed functions with up to two numeric params (or one numeric vector param of length 2) and up to 2 discrete/logical (or a corresponding vector param)
• visualizeParetoOptimalFront now draws lines instead of points
• Removed S3 method definition of getParamSet. This function is now contained in ParamHelpers 1.8

smoof 1.3

New features

• Added optional reference point ref.point for multi-objective functions
  • Reference point for ZDT functions is (11, 11)
  • Reference point for DTLZ function family is r = (11, …, 11) with #r = #objectives
  • Added getter getRefPoint
• Added possibility to pass the true mean function of a noisy function, i.e., the “unnoisy” via the smoof parameter fn.mean
  • Added getter getMeanFunction
• makeMPM2Function now has additional parameters rotated and peak.shape
• Modified: function name is optional now

smoof 1.2

New features

• Added: functions convertToMaximization and convertToMinimization
• Added: main parameter for plot and autoplot. By default the function name is used for the plot title.
• objective functions now can be passed an additional id attribute. All predefined smoof functions have an id now.
• visualizeParetoOptimalFront now works for bi-objective functions with arbitrary search space dimensions and works by calling the mco::nsga2 algorithm. Due to this, the parameters show.only.front, limits.by.front are dropped.
• Renamed makeFunctionByName to makeFunctionsByName
• Added tags ‘single-objective’ and ‘multi-objective’
• filterFunctionByTags now stops if both ‘single-objective’ and ‘multi-objective’ tags are passed
• All functions now check the passed paramter to be of the right dimension and type
• makeFunctionsByName now expects a character vector generator names (the list methods was removed)
• Generator names now do not contain the ‘Function’ suffix

Bugfixes

• Fixed: autoplot and plot do not work for wrapped functions.
• Fixed: hasConstraints for wrapped smoof functions
• Fixed: getUpperBoxConstraints

smoof 1.1

New features

• Parameter set of predefined smoof function now contains a single vector parameter instead of multiple single numeric parameters. This is consistent with function calls now, since these always expect a single vector or list.
• Added helper function get{Lower,Upper}BoxConstraints
• smoof functions now expect an optional ‘minimize’ argument which indicates which objectives should be minimized or maximized respectively
• Added shouldBeMinimized function
• Added function makeFunctionByName, which expects a function name or a list of functions names. The corresponding generator(s) is/are called. Useful if you want, e.g., filter functions by tags and generate them directly afterwards.
• Added hasTags helper function.
• filterFunctionByTags now has an additional logical argument ‘or’. If this is set to TRUE, a subset of the passed tags is sufficient to select a function.
• Added multi-objective DTLZ function family
• Added 2D single objective functions: Aluffi-Pentini-(Zirilli), Complex, Engvall, Jennrich-Sampsam, Judge, Kearfott
• Renamed bochachevsky function to bohachevsky.n1

Bugfixes

• Fixed some wrong tag assigments
• Fixed global optimum of Giunta function

smoof v1.0:

• First submission to CRAN.