Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analysis and Understanding of Various Models for Efficient
  Representation and Accurate Recognition of Human Faces   In this paper we have tried to compare the various face recognition models
against their classical problems. We look at the methods followed by these
approaches and evaluate to what extent they are able to solve the problems. All
methods proposed have some drawbacks under certain conditions. To overcome
these drawbacks we propose a multi-model approach

30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph