Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Effectiveness of Classification on Information Retrieval System
  (Case Study)   Large amount of unstructured designed information is difficult to deal with.
Obtaining specific information is a hard mission and takes a lot of time.
Information Retrieval System (IR) is a way to solve this kind of problem. IR is
a good mechanism but does not give the perfect solution. Other techniques have
been added to IR to develop the result. One of the techniques is text
classification. Text classification task is to assign a document to one or more
category. It could be done manually or algorithmically. Text classification
enhances the output of this process by reducing the results. This study proved
that text classification has a positive influence on Information Retrieval
Systems.

11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph