Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Line Simplification   As an important practice of map generalization, the aim of line
simplification is to reduce the number of points without destroying the
essential shape or the salient character of a cartographic curve. This subject
has been well-studied in the literature. This entry attempts to introduce how
line simplification can be guided by fractal geometry, or the recurring scaling
pattern of far more small things than large ones. The line simplification
process involves nothing more than removing small things while retaining large
ones based on head/tail breaks.

27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci