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Table 1 Nine models constructed using the state-space model

From: Evaluating swine disease occurrence on farms using the state-space model based on meat inspection data: a time-series analysis

 

Seasonality

Trend

Model1

None

None

Model2

None

Linear

Model3

None

Quadratic

Model4-1

Fluctuating cycle

None

Model4-2

Fixed cycle

None

Model5-1

Fluctuating cycle

Linear

Model5-2

Fixed cycle

Linear

Model6-1

Fluctuating cycle

Quadratic

Model6-2

Fixed cycle

Quadratic

  1. Models were classified according to nine categories based on the combination of seasonality and trend. For seasonality, models were constructed using dummy variables. Fluctuating cycle means that the seasonal component changes, and fixed cycle means that the seasonal component is fixed. For trends, we considered linear trends and quadratic trends