Koopman, Siem Jan; Lee, Kai Ming - 2005
, the asymmetry of cyclical behavior is often discussed and considered for series such as unemployment and gross domestic … asymmetric cycles. The presence of asymmetry can be tested using classical likelihood based test statistics. The trend …-cycle decomposition model is applied to three key U.S. macroeconomic time series. It is found that cyclical asymmetry is a prominent …