Water quality prediction method based on gated circulation unit network integration

A cyclic unit, water quality prediction technology, applied in prediction, neural learning method, biological neural network model, etc., can solve the problem of difficult to establish water quality prediction model, to improve generalization ability and robustness, improve accuracy, improve The effect of efficiency

Pending Publication Date: 2020-04-24
CHONGQING UNIV
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AI Technical Summary

Problems solved by technology

[0003] Due to the diversity and complexity of water quality components, there is often a highly nonlinear relationship between water quality indicators and the traditional linear method is difficult to establish an accurate water quality prediction model
At present, the research on typical water quality simulation models mainly uses MIKE21 hydraulic water quality model, EFDC hydrodynamic module, AnnAGNPS

Method used

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  • Water quality prediction method based on gated circulation unit network integration
  • Water quality prediction method based on gated circulation unit network integration
  • Water quality prediction method based on gated circulation unit network integration

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[0027] Such as figure 1 Shown as the flow chart, the realization of this patent is to integrate the GRU with m=5 different structures. The internal structure of the GRU is as figure 2 Shown. The specific steps of this algorithm are as follows:

[0028] Step 1: Perform preprocessing after data collection to obtain water quality index time series data, and divide the data set into training set and test set;

[0029] Step 2: Construction of GRU networks with different structures;

[0030] Step 3: Input the training set, and use back propagation and gradient descent to train five GRU networks;

[0031] Step 4: Build the final prediction model and use the mean method to integrate the output results of the five trained GRU networks;

[0032] Step 5: Save the final model and input the test set to test the identification effect. The final model can be used in the actual water quality prediction link.

[0033] The step 1 includes the following steps:

[0034] Step 1.1: Data collection: The data ...

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Abstract

A high-precision prediction algorithm is designed for the current situation that water quality changes are difficult to predict to cause pollution accidents. According to the algorithm, an integratedgating circulation unit is innovatively used for processing time series data of historical water quality indexes, so that water quality prediction and analysis are carried out. The algorithm is builtby a Keras tool of PYTHON3.6. 5, and comprises the steps of integrating five gating cycle unit networks, and integrating the five gating cycle units by using an averaging method. The time series dataof the multiple water quality indexes are used as the input of the algorithm, and finally the high-accuracy water quality effect is obtained. The algorithm provides a new solution for water quality prediction, can provide reliable evaluation and early warning for water pollution prevention and control, and is further widely applied to the field of water quality prediction.

Description

【Technical field】 [0001] The invention relates to a water quality prediction method based on gated circulation unit network integration, which belongs to the field of water environment detection. 【Background technique】 [0002] Water is the source of life and a necessary condition for the survival of organisms and economic development. At present, nearly half of the 666 cities in my country are short of water. To make matters worse, in the case of such a shortage of water resources, due to the rapid development of my country's industrialization process and the decline in the self-purification capacity of rivers, more than 70% of the river sections of the country's seven major water systems have been polluted, and about 90% of urban waters have been polluted. heavily polluted. The problem of water pollution has become one of the most important restrictive factors for my country's economic and social development, and the prevention and control of water pollution has been high...

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Application Information

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IPC IPC(8): G06N3/08G06Q10/04G06Q10/06G06Q50/06
CPCG06N3/084G06Q10/04G06Q10/06395G06Q50/06Y02A20/152
Inventor 符礼丹陈鸣辉何强陆彬春彭志云季琪崧
Owner CHONGQING UNIV
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