Structural Components

LevelTrendComponent([order, ...])	Level and trend component of a structural time series model
AutoregressiveComponent([order, name])	Autoregressive timeseries component
TimeSeasonality(season_length[, ...])	Seasonal component, modeled in the time domain
FrequencySeasonality(season_length[, n, ...])	Seasonal component, modeled in the frequency domain
MeasurementError([name])	Measurement error term for a structural timeseries model
CycleComponent([name, cycle_length, ...])	A component for modeling longer-term cyclical effects