Improved Adam Optimizer for Deep Neural Networks

By Zijun Zhang. International Workshop on Quality of Service, 2018

1,333 citations recorded by the source corpus.

Adaptive optimization algorithms, such as Adam and RMSprop, have witnessed better optimization performance than stochastic gradient descent (SGD) in some scenarios. However, recent studies show that they often lead to worse generalization performance than SGD, especially for training deep neural networks (DNNs). In this work, we identify the reasons that Adam generalizes worse than SGD, and develop a variant of Adam to eliminate the generalization gap. The proposed method, normalized direction-preserving Adam (ND-Adam), enables more precise control of the direction and step size for updating weight vectors, leading to significantly improved generalization performance. Following a similar rationale, we further improve the generalization performance in classification tasks by regularizing the softmax logits. By bridging the gap between SGD and Adam, we also hope to shed light on why certain optimization algorithms generalize better than others.

Subfields: Artificial Intelligence, Computer Vision and Pattern Recognition

View Paper: https://www.semanticscholar.org/paper/46ffa583ba475ba699e5b1423e645a3c5dc9a0da

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In Artificial Intelligence

  1. Timothy P. Lillicrap
  2. Sergey Levine
  3. Adam Santoro
  4. Yoshua Bengio
  5. Greg Wayne
  6. Animesh Garg
  7. Pieter Abbeel
  8. Chelsea Finn

In Computer Vision and Pattern Recognition

  1. Adam Santoro
  2. Timothy P. Lillicrap
  3. Greg Wayne
  4. Luc Van Gool
  5. Li Fei-Fei
  6. Animesh Garg
  7. Dacheng Tao
  8. Trevor Darrell

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