ORDERALS

There is a lot of material on ordering of matrix rows and columns in the older CA material. Guttman has his work on the perfect scale. There is also Schriever's dissertation. Reordering is becoming important these days in numerical analysis, where we sometimes have to deal with very large and very sparse matrices, and in DNA sequencing, where the problem can be formulated in terms of large adjacency matrices of graphs. "Spectral" methods are being studied here (often this is connected with archeological or developmental seriation).

UCLA Department of Statistics
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