Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
The equivalence of the Beveridge–Nelson decomposition and the trend-cycle decomposition is well established. In this paper we argue that this equivalence is almost immediate when a Gaussian score-driven location model is considered. We also provide a natural extension towards heavy-tailed distributions for the disturbances which lead to a robust version of the Beveridge–Nelson decomposition.