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The crawler module gains the webpage information and transports it to the judgment module. Then the judgment module will detect the webpage changes according to the hash value of the webpage source code, the hash value of all the images in webpage, the hash value of the JavaScript file in the webpage, and the hash value of the CSS file in the webpage. And transport data to the data processing module after detecting the webpage change. The data processing module will calculate the webpage change time, the webpage change code amplitude value, the webpage change frequency value, the webpage change content location value, and the webpage change content relationship value based on the data. The specific process is as follows.
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IEEE/ICACT20210116 Slide.07
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