title = "Information Fusion in Offspring Generation: A Case
Study in Gene Expression Programming",
journal = "IEEE Access",
year = "2020",
volume = "8",
pages = "74782--74792",
DOI = "doi:10.1109/ACCESS.2020.2988587",
ISSN = "2169-3536",
abstract = "Gene expression programming (GEP), which is a variant
of genetic programming (GP) with a fixed-length linear
model, has been applied in many domains. Typically, GEP
uses genetic operators to generate offspring. In recent
years, the estimation of distribution algorithm (EDA)
has also been proven to be efficient for offspring
generation. Genetic operators such as crossover and
mutation generate offspring from an implicit model by
using the individual information. By contrast, EDA
operators generate offspring from an explicit model by
using the population distribution information. Since
both the individual and population distribution
information are useful in offspring generation, it is
natural to hybrid EDA and genetic operators to improve
the search efficiency. To this end, we propose a hybrid
offspring generation strategy for GEP by using a
univariate categorical distribution based EDA operator
and its original genetic operators. To evaluate the
performance of the new hybrid algorithm, we apply the
algorithm to ten regression tasks using various
parameters and strategies. The experimental results
demonstrate that the new algorithm is a promising
approach for solving regression problems efficiently.
The GEP with hybrid operators outperforms the original
GEP that uses genetic operators on eight out of ten
benchmark datasets.",
notes = "Science and Technology on Complex System Control and
Intelligent Agent Cooperation Laboratory, Beijing
Electro-Mechanical Engineering Institute, Beijing,
China