High Order and Multilayer Perceptron Initialization
Proper initialization is one of the most important prerequisites for fast convergence of feed-forward neural networks like high order and multilayer perceptrons. This publication aims at determining the optimal variance (or range) for the initial weights and biases, which is the principal parameter of random initialization methods for both types of neural networks. An overview of random weight initialization methods for multilayer perceptrons is presented. These methods are extensively tested using eight real- world benchmark data sets and a broad range of initial weight variances by means of more than $30,000$ simulations, in the aim to find the best weight initialization method for multilayer perceptrons. For high order networks, a large number of experiments (more than $200,000$ simulations) was performed, using three weight distributions, three activation functions, several network orders, and the same eight data sets. The results of these experiments are compared to weight initialization techniques for multilayer perceptrons, which leads to the proposal of a suitable initialization method for high order perceptrons. The conclusions on the initialization methods for both types of networks are justified by sufficiently small confidence intervals of the mean convergence times.
- Related documents: http://publications.idiap.ch/index.php/publications/showcite/Thimm-95.1
Keywords: interconnection strength ; random weight initialization ; real-world benchmark ; neuron ; multilayer perceptron ; learning ; neurocomputing ; high(er) order neural network ; neural network ; learning rate ; comparison of weight initialization methods ; high(er) order perceptron ; neural computation ; connectionism ; weight initialization ; optimization ; sigma-pi connection ; neural network initialization ; initial weight distribution ; initial weight ; activation function
Record created on 2006-03-10, modified on 2016-08-08