Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Adjacency-Preserving Spatial Treemaps   Rectangular layouts, subdivisions of an outer rectangle into smaller
rectangles, have many applications in visualizing spatial information, for
instance in rectangular cartograms in which the rectangles represent geographic
or political regions. A spatial treemap is a rectangular layout with a
hierarchical structure: the outer rectangle is subdivided into rectangles that
are in turn subdivided into smaller rectangles. We describe algorithms for
transforming a rectangular layout that does not have this hierarchical
structure, together with a clustering of the rectangles of the layout, into a
spatial treemap that respects the clustering and also respects to the extent
possible the adjacencies of the input layout.

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The categories of this paper are: math
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The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: econ
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The categories of this paper are: hep-ph
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The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-th
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The categories of this paper are: acc-phys