Data optimization method based on normal distribution
A normal distribution and data technology, applied in the field of data processing, can solve problems such as misunderstanding of the global situation, failure to consider the distribution of global data, and wrong judgments, so as to improve accuracy, make data selection results reasonable, and avoid unfair problems Effect
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Embodiment 1
[0052] Take the automated sorting of watermelons as an example. Automatically sort a batch of watermelons and divide them into first-class, second-class, and third-class products... and send them to the market for sale according to different prices.
[0053]First, use data acquisition devices such as cameras and microphones to collect data. Data is collected from outside the system and input to an interface inside the system. Specifically in this embodiment, a camera is installed on the assembly line to collect the color, pattern, shape of the pedicle, and size of the navel of each melon, and convert them into digital signals and store them in the database for subsequent classification.
[0054] Then, data cleaning is performed to remove outliers. Invalid and missing value checks are due to investigation, coding, and entry errors. There may be some invalid and missing values in the data, which need to be dealt with appropriately. Specifically in this embodiment, variables...
Embodiment 2
[0061] If you want to divide this batch of melons into four grades, you can use the same method to calculate that the score of the first grade (25%) is greater than x1, the score of the second grade (25%) is greater than x2 and less than x1, and, the score of the third grade (accounting for 25%) with a score greater than x3 and less than x2, and the rest are grade 4 melons with a score less than x3 (accounting for 25%).
Embodiment 3
[0063] If you want to divide this batch of melons into two grades, eliminate the poorer inferior melons, and set the proportion of the inferior melons to be eliminated to 20%, set the normal distribution curve, x-axis and x∈(-∞, x 0 ) is set to 0.2, that is, A is 0.2, and the inverse function of the cumulative density function of the normal distribution can be used to obtain x 0 , with a score less than x 0 The watermelon is the inferior melon.
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