TY  - BOOK
AU  - Coleman,David E.
ED  - National Bureau of Economic Research.
TI  - Finding Leverage Groups
T2  - NBER working paper series
PY  - 1977///
CY  - Cambridge, Mass.
PB  - National Bureau of Economic Research
N1  - August 1977; Hardcopy version available to institutional subscribers
N2  - A brief discussion of recent methods using the Hat Matrix for identifying leverage points, and clustering techniques for finding groups of data points is presented. The problem of identifying leverage groups is addressed, and a heuristic algorithm for identifying both leverage points and leverage groups is proposed. Semi-portable FORTRAN code implementing the algorithm, a sample terminal session, and a discussion of the terminal session are included
UR  - https://www.nber.org/papers/w0195
UR  - http://dx.doi.org/10.3386/w0195
ER  -