Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: XML framework for concept description and knowledge representation   An XML framework for concept description is given, based upon the fact that
the tree structure of XML implies the logical structure of concepts as defined
by attributional calculus. Especially, the attribute-value representation is
implementable in the XML framework. Since the attribute-value representation is
an important way to represent knowledge in AI, the framework offers a further
and simpler way than the powerful RDF technology.

35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph