Flow similarity analysis method and device

A similarity analysis and similarity technology, which is applied in prediction, instrumentation, electrical digital data processing, etc., can solve the problems of large sequence errors and low recognition

Active Publication Date: 2017-01-04
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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However, there may be small local deviations in this accumulation method, which may accumulate into a large error in the entire se

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  • Flow similarity analysis method and device
  • Flow similarity analysis method and device

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[0041] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0042] figure 1 is a flowchart of a flow similarity analysis method according to an exemplary embodiment, as shown in figure 1 As shown, the traffic similarity analysis method can be applied to a computer, including the following steps.

[0043] Step S11: Determine the number of reversals of the first flow profile.

[0044] Step S12: Calculate the fractal dimension of the first hydrograph.

[0045] Step S13: Determine the similar distance between the first hydrograph and the second hydrograph according to the number of reversals and the fractal dimension, wherein the similar distance is used to indicate the distance between the first hydrograph and the second...

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Abstract

The invention relates to a flow similarity analysis method and device and provides a method for better analyzing hydrological process similarity. The method comprises steps as follows: the reversing times of a first flow hydrograph are determined; fractal dimensions of the first flow hydrograph are calculated; the similarity distance between the first flow hydrograph and a second flow hydrograph is determined according to the reversing times and the fractal dimensions, wherein the similarity distance is used for indicating similarity between the first flow hydrograph and the second flow hydrograph.

Description

technical field [0001] The invention relates to the field of hydrological analysis, in particular to a flow similarity analysis method and device. Background technique [0002] In hydrological forecasting and ecological scheduling, the similarity of hydrological processes is often studied, and improving the accuracy of flow similarity judgment is of great significance for strengthening flood control safety and developing ecological water conservancy. [0003] The flow process is a time series process. At present, the research methods on the measurement of time series similarity mainly include: Euclidean distance, Minkowski distance, envelope distance and DTW (Dynamic Time Warping Distance, dynamic time warping distance). These methods mostly focus on studying the distance between two time series, and need to process the difference between the two time series variables before accumulating. However, there may be small local deviations in this accumulation method, which may ac...

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Application Information

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IPC IPC(8): G06F17/50G06Q10/04G06Q50/06
CPCG06F30/20G06Q10/04G06Q50/06
Inventor 吴佳鹏刘玲花刘来胜吴雷祥霍炜洁李振海程东升毛战坡李国强邹晓雯李昂余晓李昆
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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