Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: PID2018 Benchmark Challenge:Multi-Objective Stochastic Optimization
  Algorithm   This paper presents a multi-objective stochastic optimization method for
tuning of the controller parameters of Refrigeration Systems based on Vapour
Compression. Stochastic Multi Parameter Divergence Optimization (SMDO)
algorithm is modified for minimization of the Multi Objective function for
optimization process. System control performance is improved by tuning of the
PI controller parameters according to discrete time model of the refrigeration
system with multi objective function by adding conditional integral structure
that is preferred to reduce the steady state error of the system. Simulations
are compared with existing results via many graphical and numerical solutions.

33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph