booktitle = "2016 Indian Control Conference (ICC)",
title = "Use genetic programming for selecting predictor
variables and modeling in process identification",
year = "2016",
pages = "230--237",
abstract = "Availability of an accurate and robust dynamic model
is essential for implementing the model dependent
process control. When first principles based modelling
becomes difficult, tedious and/or costly, a dynamic
model in the black-box form is obtained (process
identification) by using the measured input-output
process data. Such a dynamic model frequently contains
a number of time delayed inputs and outputs as
predictor variables. The determination of the specific
predictor variables is usually done via a trial and
error approach that requires an extensive computational
effort. The computational intelligence (CI) based
data-driven modelling technique, namely, genetic
programming (GP) can search and optimise both the
structure and parameters of a linear/nonlinear dynamic
process model. It is also capable of choosing those
predictor variables that significantly influence the
model output. Thus usage of GP for process
identification helps in avoiding the extensive time and
efforts involved in the selection of the time delayed
input-output variables. This advantageous GP feature
has been illustrated in this study by conducting
process identification of two chemical engineering
systems. The results of the GP-based identification
when compared with those obtained using the transfer
function based identification clearly indicates the out
performance by the former method.",