Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wireless Sensor Networks Localization Methods: Multidimensional Scaling
  vs. Semidefinite Programming Approach   With the recent development of technology, wireless sensor networks are
becoming an important part of many applications such as health and medical
applications, military applications, agriculture monitoring, home and office
applications, environmental monitoring, etc. Knowing the location of a sensor
is important, but GPS receivers and ophisticated sensors are too expensive and
require processing power. Therefore, the localization wireless sensor network
problem is a growing field of interest. The aim of this paper is to give a
comparison of wireless sensor network localization methods, and therefore,
multidimensional scaling and semidefinite programming are chosen for this
research. Multidimensional scaling is a simple mathematical technique
widely-discussed that solves the wireless sensor networks localization problem.
In contrast, semidefinite programming is a relatively new field of optimization
with a growing use, although being more complex. In this paper, using extensive
simulations, a detailed overview of these two approaches is given, regarding
different network topologies, various network parameters and performance
issues. The performances of both techniques are highly satisfactory and
estimation errors are minimal

22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph