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Book Review : Three-Way Scaling and Clustering

common current data theory. The authors distinguish between sources and individuals, noting that the techniques may be used with multiple matrices, a more general approach than restricting it to the use of multiple persons. An example is presented, and arguments are advanced about the relevance of the source weights for the example. Commendably, the data used for examples are presented (pp. 62-63). The models are defined in a simple fashion. As is usual in these monographs, formula development is relegated