Urban flood risk assessment method of coupling entropy weight-fuzzy clustering algorithm

A technology of fuzzy clustering and risk assessment, applied in computing, computer parts, character and pattern recognition, etc., can solve the problem that the risk classification threshold is not easy to determine, and achieve the effect of improving the evaluation index system and overcoming the difficult determination.

Pending Publication Date: 2020-12-25
TIANJIN UNIV
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Problems solved by technology

[0005] The present invention aims at the deficiency of existing flood risk assessment methods, and proposes a flood risk assessment method based on improved entropy weight-clustering analysis algorithm, which overcomes the shortcoming that the threshold value is not easy to determine in risk classification, and adopts entropy weight The method takes into account the weight of each index, making the evaluation results more scientific

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  • Urban flood risk assessment method of coupling entropy weight-fuzzy clustering algorithm
  • Urban flood risk assessment method of coupling entropy weight-fuzzy clustering algorithm
  • Urban flood risk assessment method of coupling entropy weight-fuzzy clustering algorithm

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[0052] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0053]It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0054] see figure 1 , the present embodiment provides an urban flood risk assessment method coupled with entropy weight-fuzzy clustering algorithm, and the independent drainage area of ​​Haidian Island, Haikou City, Hainan Province (such as figure 2 Shown) for empirical research, the method steps are as follows:

[0055] (1) Establish a flood risk assessment index system

[0056] According to the basic data provided by Haikou Water Affairs Bureau, including rainfall and tide level data (1974-2012), DEM elevatio...

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Abstract

The invention discloses a flood risk assessment method based on an improved entropy weight-clustering analysis algorithm, which overcomes the defect that a threshold value is not easy to determine inrisk grading, and adopts an entropy weight method to consider the weight of each index, so that an assessment result is more scientific. The invention provides a new way for flood risk evaluation, hasa certain practical application value, and can provide a certain scientific basis for disaster prevention and reduction decisions such as urban resource allocation and related department emergency plans.

Description

technical field [0001] The invention belongs to the technical field of disaster prevention and mitigation, and in particular relates to an urban flood risk assessment method coupled with an entropy weight-fuzzy clustering algorithm. Background technique [0002] Flood disasters are the most frequent and wide-ranging natural disasters in the world, which have caused huge loss of life and property in the past few decades. Statistics show that from 1900 to 2013, flood disasters caused a total of about 7 million deaths and 600 billion US dollars in property losses. According to the fifth IPCC (Intergovernmental Panel on Climate Change) climate assessment report, the frequency of extreme precipitation events and sea level will further rise, which will further increase the frequency and intensity of flood disasters. [0003] As an important tool for disaster prevention, flood risk assessment is an important basic research for human society to prevent natural disasters, control an...

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26G06K9/62
CPCG06Q10/0635G06Q10/06393G06Q50/265G06F18/23213Y02A10/40
Inventor 徐奎冯文强宾零陵练继建许红师
Owner TIANJIN UNIV
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