Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ordinal and Cardinal Dendrograms Depicting Migration-Based
  Regionalization of 3,000 + U. S. Counties   We have obtained a "hierarchical regionalization" of 3,107 county-level units
of the United States based upon census-recorded 1995-2000 intercounty migration
flows. The methodology employed was the two-stage (double-standardization and
strong component [directed graph] hierarchical clustering) algorithm described
in the 2009 PNAS (106 [26], E66) letter (arXiv:0904.4863). Various features (e.
g., cosmopolitan vs. provincial aspects, and indices of isolation) of the
regionalization have been previously discussed in arXiv:0907.2393,
arXiv:0903.3623 and arXiv:0809.2768. However, due to the lengthy (38-page)
nature of the associated dendrogram, the detailed tree structure itself was not
readily available for inspection. Here, we do present this (county-searchable)
dendrogram--and invite readers to explore it, based on their particular
interests/locations. An ordinal scale--rather than the originally-derived
cardinal scale of the doubly-standardized values--in which groupings/features
were more immediately apparent, was originally presented. Now, we append the
cardinal-scale dendrogram.

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The categories of this paper are: math
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ph
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The categories of this paper are: q-fin
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: hep-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
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The categories of this paper are: astro-ph