Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New and Old Jet Clustering Algorithms for Electron-Positron Events   Over the years, many jet clustering algorithms have been proposed for the
analysis of hadronic final states in $e^+e^-$ annihilations. These have
somewhat different emphasis and are therefore more or less suited for various
applications. We here review some of the most used and compare them from a
theoretical and experimental point of view.

25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph