class IntegrationLayer:
    def __init__(self):
        self.symbolic_processor = SymbolicProcessor()
        self.neural_processor = NeuralProcessor()
        self.semiotic_processor = SemioticProcessor()
    
    def process_input(self, input_data):
        # Bidirectional processing between symbolic and subsymbolic systems
        neural_output = self.neural_processor.process(input_data)
        symbolic_output = self.symbolic_processor.process(input_data)
        semiotic_interpretation = self.semiotic_processor.interpret(
            neural_output, 
            symbolic_output
        )
        return self._integrate_outputs(
            neural_output, 
            symbolic_output, 
            semiotic_interpretation
        )

class SemioticProcessor:
    def __init__(self):
        self.sign_levels = ['syntactic', 'semantic', 'pragmatic']
        
    def interpret(self, neural_output, symbolic_output):
        # Multi-level sign processing implementation
        pass