Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Band-pass filters are useful in a wide range of economic contexts. This paper develops a set of approximate band-pass filters and illustrates their application to measuring the business-cycle component of macroeconomic activity. Detailed comparisons are made with several alternative filters commonly used for extracting business-cycle components. © 2000 by the President and Fellows of Harvard College and the Massachusetts Institute of Technology