The article has presented the lie detection methods on basis of fuzzy comprehensive evaluation after analyzing disadvantages of traditional lie detection. This lie detection method has converted qualitative lie detection problems into quantitative calculation, while reducing the subjectivity of the experiment and improving the experimental precision for the effective solution of such problems as multiple parameters and difficult quantization during the lie detection experiment. Finally, the accuracy has been tested after using homemade polygraph testing. Since the accuracy of the fuzzy comprehensive evaluation is 90.6%, the method has been proved to be effective.
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