Ensemble of heterogeneous flexible neural trees using multiobjective genetic programming
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- @Article{Ojha:2017:ASC,
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author = "Varun Kumar Ojha and Ajith Abraham and Vaclav Snasel",
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title = "Ensemble of heterogeneous flexible neural trees using
multiobjective genetic programming",
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journal = "Applied Soft Computing",
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volume = "52",
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pages = "909--924",
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year = "2017",
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ISSN = "1568-4946",
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DOI = "doi:10.1016/j.asoc.2016.09.035",
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URL = "http://www.sciencedirect.com/science/article/pii/S156849461630494X",
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abstract = "Machine learning algorithms are inherently
multiobjective in nature, where approximation error
minimization and model's complexity simplification are
two conflicting objectives. We proposed a
multiobjective genetic programming (MOGP) for creating
a heterogeneous flexible neural tree (HFNT), tree-like
flexible feedforward neural network model. The
functional heterogeneity in neural tree nodes was
introduced to capture a better insight of data during
learning because each input in a dataset possess
different features. MOGP guided an initial HFNT
population towards Pareto-optimal solutions, where the
final population was used for making an ensemble
system. A diversity index measure along with
approximation error and complexity was introduced to
maintain diversity among the candidates in the
population. Hence, the ensemble was created by using
accurate, structurally simple, and diverse candidates
from MOGP final population. Differential evolution
algorithm was applied to fine-tune the underlying
parameters of the selected candidates. A comprehensive
test over classification, regression, and time-series
datasets proved the efficiency of the proposed
algorithm over other available prediction methods.
Moreover, the heterogeneous creation of HFNT proved to
be efficient in making ensemble system from the final
population.",
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keywords = "genetic algorithms, genetic programming, Pareto-based
multiobjectives, Flexible neural tree, Ensemble,
Approximation, Feature selection",
- }
Genetic Programming entries for
Varun Kumar Ojha
Ajith Abraham
Vaclav Snasel
Citations