Pattern layer reduction for a generalized regression neural network by using a self-organizing map

• Autorzy: Kartal S. , Oral M. , Ozyildirim B. M.

Identyfikatory

DOI

10.2478/amcs-2018-0031

• Języki publikacji: EN

Abstrakty

EN

In a general regression neural network (GRNN), the number of neurons in the pattern layer is proportional to the number of training samples in the dataset. The use of a GRNN in applications that have relatively large datasets becomes troublesome due to the architecture and speed required. The great number of neurons in the pattern layer requires a substantial increase in memory usage and causes a substantial decrease in calculation speed. Therefore, there is a strong need for pattern layer size reduction. In this study, a self-organizing map (SOM) structure is introduced as a pre-processor for the GRNN. First, an SOM is generated for the training dataset. Second, each training record is labelled with the most similar map unit. Lastly, when a new test record is applied to the network, the most similar map units are detected, and the training data that have the same labels as the detected units are fed into the network instead of the entire training dataset. This scheme enables a considerable reduction in the pattern layer size. The proposed hybrid model was evaluated by using fifteen benchmark test functions and eight different UCI datasets. According to the simulation results, the proposed model significantly simplifies the GRNN’s structure without any performance loss.

Słowa kluczowe

EN

generalized regression neural network; artificial neural network; self organizing map; nearest neighbour; reduced dataset

PL

sztuczna sieć neuronowa; mapa samoorganizująca; metoda najbliższych sąsiadów; redukcja zbioru danych

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mathematics and Computer Science
• Rocznik: 2018
• Tom: Vol. 28, no. 2
• Strony: 411--424
• Opis fizyczny: Bibliogr. 29 poz., rys., tab.

Twórcy

autor

Kartal S.

• Department of Computer Engineering, University of Cukurova, 01330 Balcali, Saricam/Adana, Turkey

autor

Oral M.

• Department of Computer Engineering, University of Cukurova, 01330 Balcali, Saricam/Adana, Turkey

autor

Ozyildirim B. M.

• Department of Computer Engineering, University of Cukurova, 01330 Balcali, Saricam/Adana, Turkey

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).