Explain the research paper “Security computing resource allocation based on deep reinforcement learning in serverless multi-cloud edge computing” with a special focus on Deep Q-Networks (DQN). The presentation should first teach the core ideas of reinforcement learning and DQN, then show how the paper uses a variant of DQN for secure resource allocation. By the end, AI students should understand DQN architecture, experience replay, target networks, the DQN training loop, and how these concepts are applied in this real system.