Table 1.

Summary of Three Methods Compared

Method	Needs/Uses Surnames	Needs/Uses Addresses	How It Works	Output
BSG	Yes	Yes	Uses surname lists to update geocoded information and derive posterior probabilities	Probability
GO	No	Yes	Uses geocoded probabilities directly	Probability
CSG	Yes	Yes	Classifies Asians and Hispanics using surname lists; classifies others according to prevalence of blacks in block group	Classification