Mechanical temperature instrument error prediction method based on genetic-algorithm optimized least square support vector machine
A technology of support vector machine and least squares, applied in thermometer testing/calibration, thermometers, instruments, etc., can solve problems such as long training time, shortened training time, and low accuracy
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[0044] The present invention will be further described below in conjunction with the accompanying drawings.
[0045] refer to Figure 1 to Figure 9 , a mechanical temperature instrument error prediction method based on genetic algorithm optimization least squares support vector machine, the prediction method comprises the following steps:
[0046] (1) Obtain model input and output, use the characteristic parameters of the measured mechanical temperature instrument as model input, and sample the error value and error change rate of the instrument as model output;
[0047] (2) Preprocess the original temperature error data, normalize the data to the [-1, 1] interval, generate data sets and group them to obtain training sets and test sets;
[0048] (3) Select the Gaussian radial basis kernel function as the kernel function of the least squares support vector machine model, and determine the parameter combination of the model (σ 2 , γ), where γ is the kernel parameter, σ 2 is t...
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