What's New

v0.9.2 (in development)

Bug Fixes

• PYTHIA evaluation scores each algorithm only on the new instances with observed performance, and reports NaN for a trained algorithm that the new data does not cover. Before, such an algorithm was scored against labels that were never measured.
• The Oracle row of the PYTHIA summary reports the fraction of instances on which any algorithm is good. Before, it was always 1, which is wrong when opts.perf.AbsPerf is true.
• CLOISTER computes a 3D boundary for a 3D instance space; obj.plot('boundary') and scriptpng draw it. Before, the boundary ignored the third coordinate.
• Footprint boundaries written by scriptcsv include the boundaries of holes inside a footprint region.

Documentation

• Reference documentation in the MATLAB Help browser and on the web, with examples for every function.

v0.9.1

Engineering release; results of the pipeline are unchanged.

• build and explore accept an 'onStage' callback, called after each stage.
• obj.plot('boundary') and distribution_boundary.png show the CLOISTER boundary of a 2D space.
• INIT reads the metadata for both training and evaluation, and PRELIM gained an evaluation mode, so evaluation now breaks ties exactly as training does.
• opts.general.seed now also controls PILOT and SIFTED.
• InstanceSpace checks that each stage's inputs exist before running it.
• Continuous integration and a matlab.unittest test suite.

v0.9.0

Complete refactor of the toolbox.

• The InstanceSpace class is the main interface; buildIS and exploreIS remain as wrappers.
• 3D instance spaces (opts.pilot.dims = 3) with optimised viewpoints (PILOTviewpoint).
• Partial Least Squares projection (opts.pilot.method = 'pls').
• Classifier registry for PYTHIA (opts.pythia.classifier) with Sobol or Bayesian tuning, replacing LIBSVM.
• TRACE3 footprints for 2D and 3D spaces.
• ISAmigrateModel, ISAvalidateOpts and ISAdefaults.
• Licence change: from GPL v3 to the PolyForm Noncommercial License 1.0.0.