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Hyper-parameter asynchronous parallel search method based on population evolution

A search method and hyperparameter technology, applied in the field of hyperparameter asynchronous parallel search based on population evolution, can solve problems such as difficult to find, long hyperparameter search time, etc., and achieve the effect of performance improvement, time reduction and computational complexity

Pending Publication Date: 2020-05-19
HUZHOU TEACHERS COLLEGE
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the deep reinforcement learning hyperparameter search time is long and it is difficult to find a better hyperparameter configuration in the prior art, and proposes a hyperparameter asynchronous parallel search method based on population evolution, which can reduce the number of used Computational resources, find better hyperparameters, improve the performance of the algorithm

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  • Hyper-parameter asynchronous parallel search method based on population evolution
  • Hyper-parameter asynchronous parallel search method based on population evolution
  • Hyper-parameter asynchronous parallel search method based on population evolution

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Embodiment Construction

[0036] 1. PEHS algorithm construction process

[0037] The most common formulation in machine learning is to optimize the parameters θ of a model f to maximize a given objective function Q * (e.g. classification, reconstruction or prediction). The trainable parameters θ are typically updated by optimization procedures such as stochastic gradient descent. However, deep learning and reinforcement learning focus on the actual performance index Q, which is different from Q *Different (Jaderberg M, Dalibard V, Osindero S, et al. Population Based Training of Neural Networks. arXiv:1711.098462017.). For example, Q might be validation set accuracy, or environmental rewards in reinforcement learning). The main purpose of PEHS is to provide a method to simultaneously optimize the parameter θ and the hyperparameter h on the actual index Q.

[0038] First define an evaluation function eval() that uses the current state of the model to evaluate the objective function. For simplicity, ...

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Abstract

The invention provides a hyper-parameter asynchronous parallel search method based on population evolution. The method comprises steps of selecting a member copy weight and a hyper-parameter from a group with excellent performance of the group by utilizing a function; exploring the function to carry out hyper-parameter disturbance; copying the initial hyper-parameter to a new member, and taking the initial hyper-parameter as an initial hyper-parameter; terminating the member with poor performance, and repeating the steps until the hyper-parameter configuration with the optimal performance is found. According to the hyper-parameter asynchronous parallel search algorithm, the advantages of asynchronous parallel calculation and sequence optimization are fused, hyper-parameter search is carried out through utilization and exploration in the thought of the genetic algorithm, the hyper-parameter search time is effectively shortened, and the hyper-parameter search complexity is effectively reduced. In the aspect of hyper-parameter search of deep learning, compared with traditional hyper-parameter search, the performance of the hyper-parameter search is greatly improved, and the hyper-parameter search has certain effectiveness and stability.

Description

【Technical field】 [0001] The invention relates to the technical field of hyperparameter search algorithms, in particular to a hyperparameter asynchronous parallel search method based on population evolution. 【Background technique】 [0002] Deep learning has become a popular machine learning model, which mainly uses multi-layer neural network (Neural networks) training to achieve the desired learning effect. Its motivation is to establish and simulate the neural network of the human brain for analysis and learning, such as image and speech recognition. Deep learning has become a popular machine learning model, which mainly uses multi-layer neural network (Neural networks) training to achieve the desired learning effect. Its motivation is to establish and simulate the neural network of the human brain for analysis and learning, such as image and speech recognition. The concept of deep learning was proposed by Hinton et al. in 2006. It combines low-level features to form more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06N3/00G06N3/04G06N3/08
CPCG06N3/006G06N3/04G06N3/08Y02T10/40
Inventor 蒋云良邬惠峰赵康曹军杰刘勇
Owner HUZHOU TEACHERS COLLEGE
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