Maintaining regularity and generalization in data using the minimum description length principle and genetic algorithm: case of grammatical inference

Article


Pandey, H., Chaudhary, A., Mehrotra, D. and Kendall, G. 2016. Maintaining regularity and generalization in data using the minimum description length principle and genetic algorithm: case of grammatical inference. Swarm and Evolutionary Computation. 31, pp. 11-23. https://doi.org/10.1016/j.swevo.2016.05.002
TypeArticle
TitleMaintaining regularity and generalization in data using the minimum description length principle and genetic algorithm: case of grammatical inference
AuthorsPandey, H., Chaudhary, A., Mehrotra, D. and Kendall, G.
Abstract

In this paper, a genetic algorithm with minimum description length (GAWMDL) is proposed for grammatical inference. The primary challenge of identifying a language of infinite cardinality from a finite set of examples should know when to generalize and specialize the training data. The minimum description length principle that has been incorporated addresses this issue is discussed in this paper. Previously, the e-GRIDS learning model was proposed, which enjoyed the merits of the minimum description length principle, but it is limited to positive examples only. The proposed GAWMDL, which incorporates a traditional genetic algorithm and has a powerful global exploration capability that can exploit an optimum offspring. This is an effective approach to handle a problem which has a large search space such the grammatical inference problem. The computational capability, the genetic algorithm poses is not questionable, but it still suffers from premature convergence mainly arising due to lack of population diversity. The proposed GAWMDL incorporates a bit mask oriented data structure that performs the reproduction operations, creating the mask, then Boolean based procedure is applied to create an offspring in a generative manner. The Boolean based procedure is capable of introducing diversity into the population, hence alleviating premature convergence. The proposed GAWMDL is applied in the context free as well as regular languages of varying complexities. The computational experiments show that the GAWMDL finds an optimal or close-to-optimal grammar. Two fold performance analysis have been performed. First, the GAWMDL has been evaluated against the elite mating pool genetic algorithm which was proposed to introduce diversity and to address premature convergence. GAWMDL is also tested against the improved tabular representation algorithm. In addition, the authors evaluate the performance of the GAWMDL against a genetic algorithm not using the minimum description length principle. Statistical tests demonstrate the superiority of the proposed algorithm. Overall, the proposed GAWMDL algorithm greatly improves the performance in three main aspects: maintains regularity of the data, alleviates premature convergence and is capable in grammatical inference from both positive and negative corpora.

Research GroupArtificial Intelligence group
PublisherElsevier
JournalSwarm and Evolutionary Computation
ISSN2210-6502
Publication dates
Online17 May 2016
Print01 Dec 2016
Publication process dates
Deposited02 Feb 2018
Accepted16 May 2016
Output statusPublished
Accepted author manuscript
License
Digital Object Identifier (DOI)https://doi.org/10.1016/j.swevo.2016.05.002
LanguageEnglish
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