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    ___     / _ \\  | \  / ||   / _ \\  |      \\ 
   /   ||  / //\ \\ |  \/  ||  | / \ || |  --  // 
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    -|_|| `-`   `-` `-`  `-`    `---`   `------`  
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Text this: Equivalent relationship of feedforward neural networks and real-time face detection system