Method and system for predicting oncomelania density based on ReliefF-SVM
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A snail density technology, applied in the field of schistosomiasis control and prevention, can solve problems such as the lack of quantitative prediction of snail density, and achieve the effects of improving accuracy and prediction efficiency, removing irrelevant features, and reducing computing time.
Active Publication Date: 2022-04-29
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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[0004] These methods show that support vector machines can be better applied in the field of infectious disease monitoring, and most of the monitoring research on oncomelania breeding sites only use support vector machine classification to qualitatively determine whether there are living areas of oncomelania, but do not quantitatively predict the occurrence of oncomelania. Density, so the present invention proposes a method and system for predicting oncomelania density based on the ReliefF-SVM combination model to realize quantitative research on oncomelania density
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Embodiment 1
[0035] Such as figure 1 As shown, the present embodiment provides a method for predicting oncomelania density based on ReliefF-SVM, including:
[0036] S1: Obtain snail situation data; the snail situation data includes the location of Oncomelania breeding grounds and the average density of live snails;
[0037] S2: Obtain the geographical environment characteristic data of the location of the oncomelania breeding site; the geographical environment characteristic data includes meteorological data, soil texture data, soil type data, water system data, vegetation type data and vegetation coverage data;
[0038] Before the construction of the sample set and step S2, it also includes: normalizing the average density of live snails and the characteristic data of the geographical environment.
[0039] Taking geographic environment feature data as an example to illustrate the normalization method:
[0040] Considering that the dimensions and orders of variables in the geographical e...
Embodiment 2
[0134] Such as Figure 7 As shown, the present embodiment provides a kind of Oncomelania density prediction system based on ReliefF-SVM, comprising:
[0135] The snail situation data acquisition module T1 is used to obtain the snail situation data; the snail situation data includes the location of the oncomelania breeding ground and the average density of live snails;
[0136] The characteristic data acquisition module T2 is used to obtain the geographical environment characteristic data of the location of the oncomelania breeding ground; the geographical environment characteristic data includes meteorological data, soil texture data, soil type data, water system data, vegetation type data and vegetation coverage data;
[0137] A sample set construction module T3, configured to construct a sample set based on the average density of living snails and the characteristic data of the geographical environment;
[0138] A feature selection module T4, configured to select each feat...
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Abstract
The invention relates to an oncomelania density prediction method and system based on a ReliefF-SVM. The oncomelania density prediction method comprises the steps of obtaining oncomelania situation data; the oncomelania condition data comprises the position of an oncomelania breeding place and the average density of live oncomelania; acquiring geographical environment characteristic data of the position of the oncomelania breeding place; the geographical environment characteristic data comprises meteorological data, soil texture data, soil type data, water system data, vegetation type data and vegetation coverage data; constructing a sample set based on the average density of the live snails and the geographical environment feature data; on the basis of a ReliefF algorithm, selecting each feature in the geographical environment feature data in the sample set; training a support vector machine by using the sample set after feature selection to obtain an oncomelania density prediction model; and predicting the oncomelania density by using the oncomelania density prediction model. The oncomelania density prediction is carried out based on the ReliefF-SVM combination model, and the prediction accuracy and the prediction efficiency are effectively improved.
Description
technical field [0001] The invention relates to the technical field of schistosomiasis control and prevention, in particular to a method and system for predicting oncomelania density based on a ReliefF-SVM combination model. Background technique [0002] Schistosomiasis is an infectious disease on the surface of the body. The only intermediate host of schistosomiasis is the snail, and the miracidia in the snail will develop into cercariae with infectious ability. The distribution and living environment of Oncomelania snails are the most important factors affecting schistosomiasis. Therefore, accurate identification of Oncomelania breeding grounds plays a key role in grasping the distribution of schistosomiasis and preventing and controlling schistosomiasis. [0003] There are many types of infectious disease prediction methods, and the classification methods are different. In recent years, neural network models have been applied to the prediction of infectious diseases. Ar...
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