Evolving Learning Rate Optimizers for Deep Neural Networks

• URL: http://arxiv.org/abs/2103.12623v1
• Date: Tue, 23 Mar 2021 15:23:57 GMT
• Title: Evolving Learning Rate Optimizers for Deep Neural Networks
• Authors: Pedro Carvalho, Nuno Louren\c{c}o, Penousal Machado
• Abstract summary: We propose a framework called AutoLR to automatically design Learning Rates. The system evolved a classifier, ADES, that appears to be novel and innovative since, to the best of our knowledge, it has a structure that differs from state the art methods.
• Score: 2.6498598849144472
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Artificial Neural Networks (ANNs) became popular due to their successful application difficult problems such image and speech recognition. However, when practitioners want to design an ANN they need to undergo laborious process of selecting a set of parameters and topology. Currently, there are several state-of-the art methods that allow for the automatic selection of some of these aspects. Learning Rate optimizers are a set of such techniques that search for good values of learning rates. Whilst these techniques are effective and have yielded good results over the years, they are general solution i.e. they do not consider the characteristics of a specific network. We propose a framework called AutoLR to automatically design Learning Rate Optimizers. Two versions of the system are detailed. The first one, Dynamic AutoLR, evolves static and dynamic learning rate optimizers based on the current epoch and the previous learning rate. The second version, Adaptive AutoLR, evolves adaptive optimizers that can fine tune the learning rate for each network eeight which makes them generally more effective. The results are competitive with the best state of the art methods, even outperforming them in some scenarios. Furthermore, the system evolved a classifier, ADES, that appears to be novel and innovative since, to the best of our knowledge, it has a structure that differs from state of the art methods.

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