Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sentiment Analysis: A Survey   Sentiment analysis (also known as opinion mining) refers to the use of
natural language processing, text analysis and computational linguistics to
identify and extract subjective information in source materials. Mining
opinions expressed in the user generated content is a challenging yet
practically very useful problem. This survey would cover various approaches and
methodology used in Sentiment Analysis and Opinion Mining in general. The focus
would be on Internet text like, Product review, tweets and other social media.

20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio