Fish HIS (habitat suitability index) modeling method based on SVM (support vector machine)
A support vector machine and fish habitat technology, applied in computer parts, character and pattern recognition, instruments, etc., can solve the problem of limited sample points of fishery resource data, the inability to eliminate multiple correlations of environmental elements, and the difficulty of ordinary methods, etc. question
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[0050] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0051] Such as figure 1 As shown, a fish habitat suitability index modeling method based on support vector machine includes the following steps:
[0052] 1) First select the commercial fishing data of the research sea area for many years (greater than 3), and merge the fishery data on a monthly basis;
[0053] 2) Obtain marine environmental data in the study area, including sea surface temperature (SST) and sea surface height (SSH), and the area covered by the environmental data needs to completely coincide with the fishery data;
[0054] 3) The marine fishery commercial data and marine environmental data are gridded, and the range of each grid is 0.5°×0.5° latitude and longitude;
[0055] 4) Standardize the commercial fishing data by CPUE, which is the catch per unit fishing effort;
[0056] 5) calculate the suitability index SI correspon...
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