In recent years, blockchain has gained widespread attention as an emerging technology for decentralization, transparency, and immutability in advancing online activities over public networks. As an essential market process, auctions have been well studied and applied in many business fields due to their efficiency and contributions to fair trade. Complementary features between blockchain and auction models trigger a great potential for research and innovation. On the one hand, the decentralized nature of blockchain can provide a trustworthy, secure, and cost-effective mechanism to manage the auction process; on the other hand, auction models can be utilized to design incentive and consensus protocols in blockchain architectures. These opportunities have attracted enormous research and innovation activities in both academia and industry; however, there is a lack of an in-depth review of existing solutions and achievements. In this paper, we conduct a comprehensive state-ofthe-art survey of these two research topics. We review the existing solutions for integrating blockchain and auction models, with some application-oriented taxonomies generated. Additionally, we highlight some open research challenges and future directions towards integrated blockchain-auction models.
Edge-to-cloud continuum connects and extends the calculation from edge side via network to cloud platforms, where diverse workflows go back and forth, getting executed on scheduled calculation resources. To better utilize the calculation resources from all sides, workflow offloading problems have been investigating lately. Most works focus on optimizing constraints like: latency requirements, resource utilization rate limits, and energy consumption bounds. However, the dynamics among the offloading environment have hardly been researched, which easily results in uncertain Quality of Service(QoS) on the user side. Any part of the workload change, resource availability change or network latency could incur dynamics in an offloading environment. In this work, we propose a robust PAC (probably approximately correct) offloading algorithm to address this dynamic issue together with optimization. We train an LSTM-based sequence-to-sequence neural network to learn how to offload workflows in edge-to-cloud continuum. Comprehensive implementations and corresponding comparison against state-of-the-art methods demonstrate the robustness of our proposed algorithm. More specifically, our algorithm achieves better offloading performance regarding dynamic heterogeneous offloading environment and faster adaptation to newly changed environments than fine-tuned state-of-the-art RL-based offloading methods.
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