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Figure 11.


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The formalization for behavioral authentication. Inspired by the formal hypotheses and principles in information theory, the ultimate essence of behavioral authentication is the elimination of behavioral uncertainty. This uncertainty can be quantified using a metric similar to the Signal-to-Interference-plus-Noise Ratio (SINR) commonly found in communication. The impact on behavioral authentication performance arises from interference by users with similar behavior patterns and the noise inherent in the data itself

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