The Sociological Quarterly, Vol. 14, No. 3 (Summer, 1973), pp. 291-308 (18 pages) Past students of heuristic types such as the ideal or constructed types have often proposed that empirical cases be ...
Rotemberg, Julio J. "A Heuristic Method for Extracting Smooth Trends from Economic Time Series." NBER Working Paper Series, No. 7439, December 1999.