SHEN Hui-hui, LI Hong-wei. An Effective Algorithm of Restricted Boltzmann Machine Based on Momentum Method[J]. Acta Electronica Sinica, 2019, 47(1): 176-182.
DOI:
SHEN Hui-hui, LI Hong-wei. An Effective Algorithm of Restricted Boltzmann Machine Based on Momentum Method[J]. Acta Electronica Sinica, 2019, 47(1): 176-182. DOI: 10.3969/j.issn.0372-2112.2019.01.023.
An Effective Algorithm of Restricted Boltzmann Machine Based on Momentum Method
Deep learning is bringing revolution to pattern recognition and machine learning
which has been successfully applied to language processing
image processing
signal processing
business economy and so on.Restricted Boltzmann machine (RBM) is a strong representation and generative mod el
however
the learning time of deep belief nets (DBN)
which consists of multiple stacking RBM
will be longer.In this paper
the improved momentum method is used not only in gradient ascent algorithm but also in gradient descent algorithm for both classification accuracy enhancement and training time decreasing.According to the characteristics of the gradient ascent algorithm
a rapidly ascending momentum method is used in the RBM pre-training phase
which greatly improves the speed of learning.According to the characteristics of the gradient descent algorithm
an improved slowly descending momentum term is also used in the fine-tuning stage to accurately find the best point.Through the recognition experiments on the MNIST dataset and CMU-PIE face dataset
the achieved results show that the improved momentum algorithm can effectively enhance the ability of image feature expression and improve both accuracy and computation efficiency.