spleaf.term.QuasiperiodicKernel

class spleaf.term.QuasiperiodicKernel(a, b, la, nu)

Quasiperiodic kernel.

This kernel follows:

\[k(\Delta t) = \mathrm{e}^{-\lambda \Delta t} \left(a \cos(\nu \Delta t) + b \sin(\nu \Delta t)\right)\]

Parameters:

a, bfloat

Amplitudes (variance) of the cos/sin terms.

lafloat

Decay rate.

nufloat

Angular frequency.

Methods

eval(dt[, series_id])	Evaluate the kernel at lag dt.
set_conditional_coef(*args, **kwargs)	Set the coefficients used for the conditional computations.