Fit wrappers for parsnip engine dispatch

Bridge functions called by parsnip when fitting psvr model specs. Exported only because parsnip's resolver requires it; not intended for direct use. Call psvr() instead for direct fitting.

Usage

psvr_mape_rbf_fit(x, y, C, eps, rbf_sigma = 1, tol = 1e-05)

psvr_mape_poly_fit(x, y, C, eps, degree = 3L, scale_factor = 1, tol = 1e-05)

psvr_mape_linear_fit(x, y, C, eps, tol = 1e-05)

psvr_mape_sym_rbf_fit(
  x,
  y,
  C,
  eps,
  rbf_sigma = 1,
  sym_type = "even",
  tol = 1e-05
)

psvr_mape_sym_poly_fit(
  x,
  y,
  C,
  eps,
  degree = 3L,
  scale_factor = 1,
  a = 1L,
  tol = 1e-05
)

psvr_mape_sym_linear_fit(x, y, C, eps, a = 1L, tol = 1e-05)

psvr_rmspe_rbf_fit(x, y, gamma, rbf_sigma = 1, precondition = "auto")

psvr_rmspe_poly_fit(
  x,
  y,
  gamma,
  degree = 3L,
  scale_factor = 1,
  precondition = "auto"
)

psvr_rmspe_linear_fit(x, y, gamma, precondition = "auto")

psvr_rmspe_sym_rbf_fit(
  x,
  y,
  gamma,
  rbf_sigma = 1,
  sym_type = "even",
  precondition = "auto"
)

psvr_rmspe_sym_poly_fit(
  x,
  y,
  gamma,
  degree = 3L,
  scale_factor = 1,
  a = 1L,
  precondition = "auto"
)

psvr_rmspe_sym_linear_fit(x, y, gamma, a = 1L, precondition = "auto")

Arguments

x

Numeric predictor matrix (parsnip matrix interface).

y

Numeric outcome vector (strictly positive).

C

Regularization parameter for MAPE models.

eps

Epsilon tube half-width for MAPE models.

rbf_sigma

RBF bandwidth σ > 0.

tol

Solver zero-threshold.

degree

Polynomial degree ≥ 1.

scale_factor

Polynomial constant term (coef₀).

sym_type

Symmetry type ("even" or "odd") for symmetric models; translated to a = 1L or a = -1L before calling the solver.

gamma

Regularization parameter for RMSPE models.

precondition

Optional symmetric rescaling preconditioner for the RMSPE LS-SVR fitters. See rmspe_lssvr() for accepted values and semantics.