Uninorm based evolving neural networks and approximation capabilities

نویسندگان

  • Fernando Bordignon
  • Fernando A. C. Gomide
چکیده

Learning from data streams is a contemporary and challenging issue due to the increasing rate of the size and temporal availability of data, turning traditional learning methods impracticable. This work addresses a structure and introduces a learning approach to train uninorm-based hybrid neural networks using extreme learning concepts. Uninorms bring flexibility and generality to fuzzy neuron models as they can behave like triangular norms, triangular conorms, or in between by adjusting identity elements. This feature adds a form of plasticity in neural network modeling. Fuzzy C-Means is used to granulate the input space, and a scheme based on extreme learning is developed to train the batch neural network. It is proved that the network approximates continuous functions in compact domains, i.e. it is a universal approximator. Subsequently, an evolving version of the network is developed based on the described model, using online clustering methods and recursive extreme learning. It is postulated, and computational experiments endorse, that the evolving neuro fuzzy network share equal or better approximation ability in dynamic environments than its static equivalent.

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عنوان ژورنال:
  • Neurocomputing

دوره 127  شماره 

صفحات  -

تاریخ انتشار 2014