Evaluation of gradient descent learning algorithms with adaptive and local learning rate for recognising hand-written numerals.
Matteo GiudiciFilippo QueiroloMaurizio VallePublished in: ESANN (2002)
Keyphrases
- learning rate
- hand written
- learning algorithm
- error function
- update rule
- natural gradient
- convergence rate
- character recognition
- digit recognition
- multilayer neural networks
- hidden layer
- convergence speed
- adaptive learning rate
- rapid convergence
- training data
- training algorithm
- conjugate gradient
- chinese characters
- printed characters
- uniform convergence
- delta bar delta
- supervised learning
- cost function
- weight vector
- reinforcement learning
- bp neural network algorithm
- machine learning