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Fig. 3.23 The simplest
procedure of generating an
MDS map
Fig. 3.24 A geographic map showing 20 cities in the US (Copyright © 1998-2012 USA-, LLC )
map so that the north-south and east-west dimensions conform to conventions. To
reproduce the geographic layout completely, one may need to have enough data
In the following example, we take the distances between 20 cities in the USA as
the input for MDS. Figure 3.24 is a geographic map of the United States, showing
20 cities. When we compared the resultant MDS map with the usual geographic
map, it is easy for us to understand the mechanisms behind various properties of
MDS mapping.
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