ribs.emitters

Emitters output new candidate solutions in QD algorithms.

All emitters should inherit from EmitterBase, except for emitters designed for differentiable quality diversity (DQD), which should instead inherit from DQDEmitterBase.

Note

Emitters provided here take on the data type of the archive passed to their constructor. For instance, if an archive has dtype np.float64, then an emitter created with that archive will emit solutions with dtype np.float64.

ribs.emitters.EvolutionStrategyEmitter(...)

Adapts a distribution of solutions with CMA-ES.

ribs.emitters.GradientAborescenceEmitter(...)

Generates solutions with a gradient arborescence, with coefficients parameterized by CMA-ES.

ribs.emitters.GaussianEmitter(archive, x0, sigma)

Emits solutions by adding Gaussian noise to existing archive solutions.

ribs.emitters.IsoLineEmitter(archive, x0[, ...])

Emits solutions that are nudged towards other archive solutions.

ribs.emitters.EmitterBase(archive, ...)

Base class for emitters.

ribs.emitters.DQDEmitterBase(archive, ...)

Base class for differentiable quality diversity (DQD) emitters.