Implements the Laplace-Gaussian filter for sparse, additive, state-space models

fitted.sparseSpline | Extract fitted values from a 'sparseSpline' object |

generateSPASM | Generate data from an additive state space model |

gradNegL | Calculates the gradient of -l(x) |

lgf1 | First order LGF |

negHessL | Calculates the negative Hessian of l(x) |

negL | Calculates negative l(x_t) up to an additive constant |

posteriorPredictive | Calculates the convolution of two Gaussian distributions |

predict.sparseSpline | Extract fitted values from a 'sparseSpline' object |

spam | Estimates sparse (mulitivariate) additive model |

spasm | spasm: A package for implementing sparse additive state space... |

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