Hybridizing evolutionary computation and deep neural networks: an approach to handwriting recognition using committees and transfer learning

dc.affiliation.dptoUC3M. Departamento de Informáticaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Computación Evolutiva y Redes Neuronales (EVANNAI)es
dc.contributor.authorBaldominos Gómez, Alejandro
dc.contributor.authorSáez Achaerandio, Yago
dc.contributor.authorIsasi, Pedro
dc.contributor.funderMinisterio de Educación, Cultura y Deporte (España)es
dc.description.abstractNeuroevolution is the field of study that uses evolutionary computation in order to optimize certain aspect of the design of neural networks, most often its topology and hyperparameters. The field was introduced in the late-1980s, but only in the latest years the field has become mature enough to enable the optimization of deep learning models, such as convolutional neural networks. In this paper, we rely on previous work to apply neuroevolution in order to optimize the topology of deep neural networks that can be used to solve the problem of handwritten character recognition. Moreover, we take advantage of the fact that evolutionary algorithms optimize a population of candidate solutions, by combining a set of the best evolved models resulting in a committee of convolutional neural networks. This process is enhanced by using specific mechanisms to preserve the diversity of the population. Additionally, in this paper, we address one of the disadvantages of neuroevolution: the process is very expensive in terms of computational time. To lessen this issue, we explore the performance of topology transfer learning: whether the best topology obtained using neuroevolution for a certain domain can be successfully applied to a different domain. By doing so, the expensive process of neuroevolution can be reused to tackle different problems, turning it into a more appealing approach for optimizing the design of neural networks topologies. After evaluating our proposal, results show that both the use of neuroevolved committees and the application of topology transfer learning are successful: committees of convolutional neural networks are able to improve classification results when compared to single models, and topologies learned for one problem can be reused for a different problem and data with a good performance. Additionally, both approaches can be combined by building committees of transferred topologies, and this combination attains results that combine the best of bothen
dc.description.sponsorshipThis research is partially supported by the Spanish Ministry of Education, Culture and Sport under FPU fellowship with identifier FPU13/03917.en
dc.identifier.bibliographicCitationBaldominos, A., Saez, Y., & Isasi, P. (2019). Hybridizing Evolutionary Computation and Deep Neural Networks: An Approach to Handwriting Recognition Using Committees and Transfer Learning. Complexity, Vol. 2019, pp.
dc.relation.projectIDGobierno de España. FPU13/03917es
dc.rights© 2019 Alejandro Baldominos et
dc.rightsAtribución 3.0 España*
dc.rights.accessRightsopen accesses
dc.subject.otherNeural networksen
dc.titleHybridizing evolutionary computation and deep neural networks: an approach to handwriting recognition using committees and transfer learningen
dc.typeresearch article*
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