Cited by 1,030IoT and Edge/Fog ComputingPrivacy-Preserving Technologies in DataCaching and Content Delivery

In-Edge AI: Intelligentizing Mobile Edge Computing, Caching and Communication by Federated Learning

Open access
Wang, Xiaofei, Han, Yiwen, Wang, Chenyang, Zhao, Qiyang, Chen, Xu, Chen, Min·2019·IEEE Network

Abstract

Recently, along with the rapid development of mobile communication technology, edge computing theory and techniques have been attracting more and more attention from global researchers and engineers, which can significantly bridge the capacity of cloud and requirement of devices by the network edges, and thus can accelerate content delivery and improve the quality of mobile services. In order to bring more intelligence to edge systems, compared to traditional optimization methodology, and driven by the current deep learning techniques, we propose to integrate the Deep Reinforcement Learning techniques and Federated Learning framework with mobile edge systems, for optimizing mobile edge computing, caching and communication. And thus, we design the “In-Edge AI” framework in order to intelligently utilize the collaboration among devices and edge nodes to exchange the learning parameters for a better training and inference of the models, and thus to carry out dynamic system-level optimization and application-level enhancement while reducing the unnecessary system communication load. “In-Edge AI” is evaluated and proved to have near-optimal performance but relatively low overhead of learning, while the system is cognitive and adaptive to mobile communication systems. Finally, we discuss several related challenges and opportunities for unveiling a promising upcoming future of “In-Edge AI.”

AI snapshot

Written from the paper’s full text.

TL;DR

The paper proposes “In-Edge AI,” integrating Deep Reinforcement Learning and Federated Learning into mobile edge systems to optimize edge caching and computation offloading. It reports proof-of-concept simulations where DDQN with FL approaches centralized DDQN performance while reducing wireless transmission cost.

Key findings

  • In edge caching, DDQN with FL achieved hit rates close to centralized DDQN for three edge nodes (E1, E2, E3) and outperformed LRU, LFU, and FIFO.
  • In computation offloading, DDQN with FL achieved near centralized DDQN performance and was superior to mobile execution, edge node execution, and greedy execution for three UEs (m1, m2, m3).
  • Centralized DDQN performed better at the beginning of training, but after several FL model merges, DDQN with FL became near to centralized DDQN.
  • FL clients upload only model updates, reducing total wireless transmission compared with centralized DRL, where UEs must upload the whole training data.

Methods

  • Two simulations were run: edge caching and computation offloading. Edge caching used Xender’s one-month trace (01/09/2016 to 30/09/2016) with 9,514 active mobile users, 188,447 content files, and 2,107,100 content requests, fitted by a Zipf distribution with ∂ = 1.58; 6 edge nodes cooperated, coordinated by a cloud server.
  • Computation offloading assumed 5 MHz bandwidth divided into 10 wireless channels, 10 UEs as FL clients, channel gain quantized into 6 levels, and tasks generated by Bernoulli distribution with average arrival rate λ_T per time epoch.
  • DRL used Double DQN with tanh activation and Adam optimizer; a single-layer fully-connected feedforward neural network with 200 neurons served as MainNet and TargetNet. Parameters: replay memory M = 5000, minibatch B = 200, discount γ = 0.9, exploration ε = 0.001, learning rate ζ = 0.005, target replacement period φ = 250. A centralized DRL baseline was assumed to receive all data.

Limitations

  • The paper states FL cannot outperform centralized DL, only achieve near-best performance, and that FL trades advantages for heavier client computation load and more energy cost or burden on UEs and edge nodes; these remain open questions.
  • The paper states privacy and security are not its focus, and that In-Edge AI is future-oriented: state-of-the-art edge chips support only elementary DL training, deploying a randomly initialized DRL model could paralyze the MEC system, and delay requirements remain challenging; transfer learning is proposed to alleviate training.
  • The paper states the training-process comparison assumes an ideal wireless environment where massive centralized training data and lightweight FL updates can be uploaded within a discretized time epoch, whereas in practice massive training data cannot be uploaded without delay. It also assumes slowly changing content popularity, equal content sizes, and static popularity, user preference, and average request arrival rates over a relatively long period. Evident from the text: evaluation is simulation-based proof-of-concept, not a real-world deployment.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1109/mnet.2019.1800286

Cites

17 of 17 references verified0 citation errors · 0 not checkable

Statistics

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Claims the paper makes

0 of 25 cited sources checked · 0 supported · 0 flagged

  • Findingown data
    § B. Evaluation Results · p. 7

    In edge caching simulation, the hit rates of edge nodes E1, E2, E3 improve and finally maintain within a certain range during DRL training.

    “On the perspective of edge caching, E 1 , E 2 and E 3 are chosen to cache contents, and hit rates of them are improving and finally maintain within a certain range along with the process of training DRL agents.”
    Quote in the paperNot a substantial claim
  • Findingown data
    § B. Evaluation Results · p. 8

    Using centralized DRL, UEs must upload the whole training data via wireless channels and thus consume more communication resources than FL.

    “Without FL framework, viz., using centralized DRL, UEs must upload the whole training data via wireless channels and thus consume more communication resources, which is demonstrated by Fig. 6(d).”
    Quote in the paperSubstantial claim
    • Rests on an assumption: In the framework of FL, every client only needs to upload the update of its model.
  • Findingown data
    § VI. CONCLUSIONS · p. 9

    In-Edge AI is evaluated and proved to have the abilities to achieve near-optimal performance.

    “We perform experiments on investigating the scenarios of edge caching and computation offloading in mobile edge system, and the 'In-Edge AI' is evaluated and proved to have the abilities to achieve near-optimal performance.”
    Quote in the paperSubstantial claim
  • Findingcitation
    § A. Experiment Settings · p. 7

    The content popularity distribution from Xender's trace can be well fitted by a Zipf distribution with α = 1.58.

    “We capture Xender's trace for one month (from 01/09/2016 to 30/09/2016), including 9,514 active mobile users, conveying 188,447 content files, and 2,107,100 content requests [13], of which the content popularity distribution can be well fitted by a Zipf distribution with ∂ = 1 . 58 .”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [13] [13] X. Li, X. Wang, P.-J. Wan, Z. Han, V. C.M. Leung, 'Hierarchical Edge Caching in Device-to-Device Aided Mobile Networks: Modeling, Optimization, and Design', IEEE Journal on Selected Areas in Communications , Special Issue on Caching for Communication Systems and Networks, Early Access, 2018. -

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Findingown data
    § B. Evaluation Results · p. 8

    Once model merging of FL has been processed several times, the performance of DDQN with FL becomes near to that of centralized DDQN.

    “However, once the model merging of FL has been processed several times, the performance of DDQN with FL becomes near to that of centralized DDQN.”
    Quote in the paperSubstantial claim
  • May combine two claims. 25
  • Classified as probably not a substantial claim. 21
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    Findingown data
    § In-Edge AI: Intelligentizing Mobile Edge Computing, Caching and Communication by Federated Learning · p. 1

    The proposed In-Edge AI framework has near-optimal performance but relatively low learning overhead, and the system is cognitive and adaptive to mobile communication systems.

    “'In-Edge AI' is evaluated and proved to have near-optimal performance but relatively low overhead of learning, while the system is cognitive and adaptive to the mobile communication systems.”
    • Also stated in: § I. INTRODUCTION · p. 2 · plain
      “we provide proof-of-concept evaluation and verify that the proposed scheme has advantages on the balance of performance and cost.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data
    § B. Evaluation Results · p. 7

    In edge caching, DDQN with FL achieves hit rates near close to centralized DDQN and outperforms LRU, LFU, and FIFO.

    “It can be easily seen that the specific performance of FL is near close to the results of centralized DDQN in terms of achieved hit rates of 3 clients (edge nodes), and outperform LRU, LFU, and FIFO.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data
    § B. Evaluation Results · p. 7

    In computation offloading simulation, the average utilities of UEs m1, m2, m3 increase with decreasing training loss and maintain within a certain range at last.

    “In the simulation of computation offloading, the average utilities of three UEs m 1 , m 2 and m 3 are increasing with the decreasing of training loss, and also maintain within a certain range at last.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data
    § B. Evaluation Results · p. 7

    In computation offloading, DDQN with FL achieves near performance of centralized DDQN and is superior to mobile execution, edge node execution, and greedy execution.

    “In Fig. 6(b), it can be observed that the DDQN with FL achieves the near performance of centralized DDQN and is superior to another three baseline policies;”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingreasoning
    § B. Pros and Cons of Federated Learning for In-Edge AI · p. 6

    FL could not outperform the centralized DL trained model, but could still achieve the near best performance.

    “Certainly, due to the limitation of federated optimization, FL could not outperform the centralized DL trained model, but could still achieve the near best performance, which will demonstrated in Section IV.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation
    § I. INTRODUCTION · p. 1

    Edge nodes can handle computation and content requests of UEs, improving QoS of MNOs and QoE of UEs and relieving backbone and cloud load.

    “edge nodes, i.e., base stations equipped with computation/storage capability, could deal with the computation and content requests of UEs, and consequently this scheme improves the Quality-of-Service (QoS) of Mobile Network Operators (MNOs) and the Quality-ofExperience (QoE) of UEs and relieves the load of backbone networks, and pressure of clouds (data centers) [2].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [2] [2] X. Wang, M. Chen, T. Taleb, A. Ksentini, V. C. M. Leung, 'Cache in the Air: Exploiting Content Caching and Delivery Techniques for 5G Systems,' in IEEE Communications , vol. 52, no. 2, pp. 131-139, Feb. 2014. -

      Not checked in the free run.

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    Premisecitation
    § I. INTRODUCTION · p. 2

    Federated Learning can train DRL agents in a distributed manner while largely reducing the amount of data uploaded via the wireless uplink channel.

    “Federated Learning [11] is introduced as a framework for training DRL agents in a distributed manner while 1) largely reducing the amount of data which should be uploaded via the wireless uplink channel”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [11] [11] H. B. McMahan, E. Moore, D. Ramage, S. Hampson, and B. A. y Arcas, 'Communication-Efficient Learning of Deep Networks from Decentralized Data,' in Proceedings of the International Conference on Artificial Intelligence and Statistics , Apr. 2017. - source

      Not checked in the free run.

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    Premisereasoning
    § I. INTRODUCTION · p. 1

    MEC circumvents long propagation delays from mobile devices to remote cloud infrastructures and can support latency-critical mobile and IoT applications.

    “MEC circumvents the long propagation delays introduced by transmitting data from mobile devices to remote cloud computing infrastructures, and hence is able to support latency-critical mobile and Internet of Things (IoT) applications.”
    Quote in the paperSubstantial claim
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    Interpretationcitation
    § I. INTRODUCTION · p. 1

    Most existing optimization methods do not consider the long-term effect of current decisions except Lyapunov optimization, so in a highly time-varying MEC system they are optimal or close-to-optimal only for a snapshot.

    “3) Temporal Isolation: most of them do not consider the longterm effect of current decision on resource allocation except for Lyapunov optimization, viz., in a highly time-varying MEC system, most of proposed optimization algorithms is optimal or close-to-optimal only for a snapshot of the system.”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [3] [3] M. Chen and Y. Hao, 'Task Offloading for Mobile Edge Computing in Software Defined Ultra-Dense Network,' in IEEE J. Sel. Areas Commun. , vol. 36, no. 3, pp. 587-597, Mar. 2018 -

      Not checked in the free run.

    • cites [4] [4] Y. Mao, C. You, J. Zhang, K. Huang, K. B. Letaief, 'A Survey on Mobile Edge Computing: The Communication Perspective', in IEEE Commun. Surv. Tutorials , vol. 19, no.4, pp. 2322-2358, Aug. 2017. - source

      Not checked in the free run.

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    Interpretationreasoning
    § I. INTRODUCTION · p. 2

    [7] is based on Q-Learning, which is not feasible for a practical MEC system where the state-action space is tremendous.

    “But [7] is based on Q-Learning, which is not feasible for the practical MEC system where the stateaction space is tremendous”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [7] [7] A. Sadeghi, F. Sheikholeslami, and G. B. Giannakis, 'Optimal and Scalable Caching for 5G Using Reinforcement Learning of Space-Time Popularities,' in IEEE J. Sel. Top. Signal Process. , vol. 12, no. 1, pp. 180-190, Feb. 2018. - source

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Premisecitation
    § I. INTRODUCTION · p. 1

    Mobile Edge Computing (MEC) is a paradigm that eases the burden of backbone networks by pushing computation/storage resources to the proximity of User Equipments (UEs).

    “the emerging idea of Mobile Edge Computing (MEC) is proposed [1] as a novel paradigm for easing the burden of backbone networks by pushing the computation/storage resources to the proximity of the User Equipments (UEs).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [1] [1] ETSI, 'Mobile Edge Computing - Introductory Technical White Paper', Sep. 2014. -

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

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    Interpretationreasoning
    § I. INTRODUCTION · p. 2

    Prior works have not considered how training data shall be gathered, where the RL agent should be placed and trained, how the update process should be proceeded and collaborated, or privacy protection of training data.

    “none of these works has thought over 1) in what form the training data shall be gathered (whether in a distributed or a centralized way), 2) where the reinforcement learning agent should be placed and trained (whether in UEs, edge nodes or remote cloud infrastructures), 3) how the update process of reinforcement learning agents should be proceeded and collaborated, and 4) the privacy protection of”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § I. INTRODUCTION · p. 1

    A recent trend is to optimize wireless communication by AI techniques, including PHY, data link layer, and traffic control.

    “a recent new trend is to optimize wireless communication by Artificial Intelligence (AI) techniques [4] [5], include but not limited to the application of AI for Physical Layer (PHY), Data Link Layer, and traffic control [6].”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites [4] [4] Y. Mao, C. You, J. Zhang, K. Huang, K. B. Letaief, 'A Survey on Mobile Edge Computing: The Communication Perspective', in IEEE Commun. Surv. Tutorials , vol. 19, no.4, pp. 2322-2358, Aug. 2017. - source

      Not checked in the free run.

    • cites [5] [5] Q. Mao, F. Hu, and Q. Hao, 'Deep Learning for Intelligent Wireless Networks: A Comprehensive Survey,' in IEEE Commun. Surv. Tutorials , Early Access, 2018. - source

      Not checked in the free run.

    • cites [6] [6] F. Tang, B. Mao, Z. M. Fadlullah, N. Kato, O. Akashi, T. Inoue, and K. Mizutani, 'On Removing Routing Protocol from Future Wireless Networks: A Real-Time Deep Learning Approach for Intelligent Traffic Control,' in IEEE Wireless Communications , vol. 25, no. 1, pp. 154-160, Feb. 2018. - source

      Not checked in the free run.

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    Premisecitation
    § I. INTRODUCTION · p. 2

    [8] focuses on vehicular networks.

    “the focus of [8] is on vehicular networks.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [8] [8] Y. He, N. Zhao, and H. Yin, 'Integrated Networking, Caching, and Computing for Connected Vehicles: A Deep Reinforcement Learning Approach,' IEEE Trans. Veh. Technol. , vol. 67, no. 1, pp. 44-55, Jan. 2018. -

      Not checked in the free run.

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    Interpretationreasoning
    § III. IN-EDGE AI WITH FEDERATED LEARNING · p. 4

    Training a DRL agent on a UE individually takes a long time or is impossible on large-scale data because UE computation capability is relatively weak.

    “1) the computation capability of a UE is relatively weak, and it will consume long time or is even impossible to train the DRL agent on large-scale data;”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The computation capability of a UE is relatively weak.
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Interpretationreasoning
    § B. Evaluation Results · p. 8

    This will cause more energy cost on UEs or burden the computation of both UEs and edge nodes.

    “This will cause more energy cost on UEs or burden the computation of both UEs and edge nodes, and these issues are still open questions.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing), S4 (based). May combine two claims.

    Interpretationnone given
    § A. Accelerating AI Tasks by Edge Communication and Computing Systems · p. 8

    This is the reverse direction of the aforementioned Federated Learning, but also a kind of application of the 'In-Edge AI'.

    “Interestingly, this is the reverse direction of the aforementioned Federated Learning, but also a kind of application of the 'In-Edge AI'.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given
    § III. IN-EDGE AI WITH FEDERATED LEARNING · p. 4

    If training data is transformed for privacy, server-side proxy data is less relevant than on-device data.

    “3) if training data is transformed for privacy consideration, server-side proxy data is less relevant than on-device data.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: If training data is transformed for privacy, server-side proxy data is less relevant than on-device data.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning
    § C. Practicability Discussion · p. 6

    Deploying the DRL model directly with random weights paralyzes the MEC system because the DRL model could only make random decisions at preliminary exploration.

    “Obviously, the DRL model should not be deployed directly while setting weights of neural networks at random. Otherwise, the MEC system will be paralyzed because the DRL model could only make random decisions at preliminary exploration.”
    Quote in the paperNot a substantial claim
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    Interpretationcitation
    § C. Practicability Discussion · p. 7

    By incorporating work [14], the requirement on computation capacity of UEs could be relaxed along with decreasing the inferring delay.

    “By incorporating this work, the requirement on computation capacity of UEs could be relaxed along with decreasing the inferring delay.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [14] [14] E. Li, Z. Zhou, X. Chen, 'Edge Intelligence: On-Demand Deep Learning Model Co-Inference with Device-Edge Synergy,' in ACM SIGCOMM, MECOMM Workshop , 2018. -

      Not checked in the free run.

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    Interpretationreasoning
    § III. IN-EDGE AI WITH FEDERATED LEARNING · p. 4

    Federated Learning handles limited communication because using additional computation can decrease the communication rounds needed to train a model, and FL asks only a part of clients per round to upload updates, which handles unpredictable offline clients.

    “Nevertheless, using additional computation could decrease the consumption of communication rounds needed to train a model. In addition, FL only asks a part of clients, in one round, to upload their updates, which handles the circumstance where clients are often unpredictably off-line.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: UEs are often unpredictably off-line or allocated with poor communication resources.
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given
    § A. Integration of Federated Learning within Edge for In-Edge AI · p. 4

    Each edge node can support AI tasks on a system level dynamically, for global optimization and balancing of the whole MEC system.

    “each edge node can support AI tasks on system level dynamically, not only for its own but for the global optimization and balancing of the whole MEC system.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationcitation
    § III. IN-EDGE AI WITH FEDERATED LEARNING · p. 4

    Most distributed DRL architectures cannot handle unbalanced and non-IID data or cope with privacy issues.

    “However, most distributed DRL architectures, described by Fig. 4(b), could not handle unbalanced and non-IID data and cope with the privacy issues [11].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [11] [11] H. B. McMahan, E. Moore, D. Ramage, S. Hampson, and B. A. y Arcas, 'Communication-Efficient Learning of Deep Networks from Decentralized Data,' in Proceedings of the International Conference on Artificial Intelligence and Statistics , Apr. 2017. - source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S2 (checkable), S4 (based).

    Interpretationnone given
    § A. Integration of Federated Learning within Edge for In-Edge AI · p. 4

    With Federated Learning, edge nodes equipped with AI computation can combine the cloud and massive UEs to form a powerful AI entity with strong cognitive ability.

    “With the aid of FL framework, edge nodes equipped with AI computation in 'edge' could combine the cloud and massive UEs together and form a powerful AI entity with strong cognitive ability provided by massive UEs and edge nodes.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationcitation
    § III. IN-EDGE AI WITH FEDERATED LEARNING · p. 4

    Federated Learning uploads only the minimal update necessary to improve the DRL agent, and secure aggregation and differential privacy can be applied to avoid privacy-sensitive data in local updates.

    “The information needs to be uploaded for FL is the minimal update necessary to improve the DRL agent. Further, techniques of secure aggregation and differential privacy could be applied naturally, which could avoid that privacy-sensitive data are contained in local updates.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [11] [11] H. B. McMahan, E. Moore, D. Ramage, S. Hampson, and B. A. y Arcas, 'Communication-Efficient Learning of Deep Networks from Decentralized Data,' in Proceedings of the International Conference on Artificial Intelligence and Statistics , Apr. 2017. - source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Interpretationnone given
    § III. IN-EDGE AI WITH FEDERATED LEARNING · p. 4

    Training data uploaded to edge nodes or cloud is privacy-sensitive and may cause potential privacy accidents.

    “2) the training data which should be uploaded to edge nodes or cloud is privacy-sensitive, and it might cause potential privacy accidents;”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: Training data that should be uploaded to edge nodes or cloud is privacy-sensitive.
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Interpretationreasoning
    § C. Practicability Discussion · p. 7

    Based on pre-established DRL, the requirement of training is alleviated, i.e., the DRL agent could reach the satisfied accuracy level after a small number of mini-batches or even directly inferring.

    “Based on the pre-established DRL, the requirement of training (not inferring) is alleviated, i.e., the DRL agent could reach the satisfied accuracy level after a small number of mini-batches or even directly inferring.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: Learning takes long time of training as well as inferring according to the required accuracy level.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning
    § C. Practicability Discussion · p. 7

    When the wireless environment or the pattern of UEs' requests is changed, the UE could take advantage of the established DRL to adjust neural networks in its DRL model.

    “And when the wireless environment or the pattern of UEs' requests is changed, the UE could also take advantage of the established DRL to adjust neural networks in its DRL model.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Interpretationreasoning
    § B. Pros and Cons of Federated Learning for In-Edge AI · p. 6

    Powerful UEs could decide to perform more mini-batches in training for further decreasing the communication cost and vice versa.

    “Specifically, powerful (both in computation and energy) UEs could decide to perform more mini-batches in training for further decreasing the communication cost and vice versa.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: In FL, additional computation could be used to decrease the number of communication rounds to train a model.
    • Rests on an assumption: An effective way to add computation is increasing computation per UE, i.e., adding more local SGD updates per round.
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Interpretationreasoning
    § B. Pros and Cons of Federated Learning for In-Edge AI · p. 5

    The performance of In-Edge AI shall not be easily affected by the unbalanced data and sometimes the poor communication environment.

    “Consequently, the performance of In-Edge AI shall not be easily affected by the unbalanced data and sometimes the poor communication environment.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: FL inherently could address key issues about the availability of UEs and edge nodes and the unbalanced and non-IID data.
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given
    § C. Practicability Discussion · p. 6

    If using transfer learning, there shall be less time or computation consumption on the side of training.

    “However, if using transfer learning, there shall be less time or computation consumption on the side of training.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: Learning takes long time of training as well as inferring according to the required accuracy level.
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationreasoning
    § C. Practicability Discussion · p. 6

    The problem of deploying DRL with random weights may be solved if the DL model is not trained from scratch.

    “Nonetheless, this may be solved if the DL model is not trained from scratch.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing), S4 (based). May combine two claims.

    Interpretationnone given
    § C. Incentive and Business Model of In-Edge AI · p. 9

    In-Edge AI is a tight confederation among mobile operators, SPs/CPs, and mobile users, while capable entities may contribute more to the overall optimization of the edge caching and computing tasks, but a large number of UEs may rely on the AI of edge nodes and other UEs.

    “In-Edge AI is a tight confederation among mobile operators, SPs/CPs, and mobile users, while capable entities may contribute more to the overall optimization of the edge caching and computing tasks, but a large number of UEs may rely on the AI of edge nodes and other UEs.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing), S4 (based).

    Interpretationnone given
    § A. Accelerating AI Tasks by Edge Communication and Computing Systems · p. 8

    DRL can be treated as a type of specialized edge computing task at the service-level.

    “DRL can be treated as a type of specialized edge computing task at the service-level.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning
    § C. Practicability Discussion · p. 6

    The established DRL model could be distributed to mobile UEs.

    “Then, the established DRL model could be distributed to mobile UEs.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationreasoning
    § B. Pros and Cons of Federated Learning for In-Edge AI · p. 5

    FL's ability of handling non-IID data allows massive UEs in different wireless environments to train their own DL model without concerning about the negative effect.

    “Further, its ability of handling non-IDD data allows massive UEs in different wireless environments to train their own DL model without concerning about the negative effect.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: FL inherently could address key issues about the availability of UEs and edge nodes and the unbalanced and non-IID data.
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Interpretationreasoning
    § B. Evaluation Results · p. 8

    The coordinating server in FL only executes tasks of merging updates instead of taking over the whole training, so the computation load of clients is inevitably heavier on account of the local training process.

    “Specifically, due to the fact that the coordinating server in FL only executes tasks of merging updates instead of taking over the whole training, the computation load of clients is inevitably heavier on account of the local training process.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning
    § III. IN-EDGE AI WITH FEDERATED LEARNING · p. 4

    It is only practical to apply distributed DRL in the MEC system because there is not enough time and data for training a DRL agent in every UE and edge node.

    “though keeping and training a DRL agent in every UE and edge node can achieve the best performance, it is only practical to apply distributed DRL in the MEC system, because there shall not have enough time and data for training.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: There is not enough time and data for training a DRL agent in every UE and edge node.
38 of 38
  • The paper relies on this without support.

    A typical 5G node is expected to have 2000 or more configurable parameters.

    “a typical 5G node is expected to have 2000 or more configurable parameters”
  • The authors state this as an assumption.

    Content popularity changes slowly and all contents have the same size.

    “we assume that the content popularity changes slowly and all contents have the same size.”
  • The authors state this as an assumption.

    All content popularity, user preference and average arrival rate of requests are static during a relatively long period.

    “We assume that all content popularity, user preference and average arrival rate of requests are static during a relatively long period.”
  • The authors state this as an assumption.

    Edge node computing performance is much stronger than the UE's, so f_E is much greater than f_L.

    “the formula f E ≫ f L holds (the computing performance of edge nodes is much stronger than the UE's).”
  • The paper relies on this without support.

    Training data is large in quantity when considering massive UEs.

    “the training data is large in quantity when considering massive UEs”
  • The paper relies on this without support.

    Training data that should be uploaded to edge nodes or cloud is privacy-sensitive.

    “the training data which should be uploaded to edge nodes or cloud is privacy-sensitive”
  • The paper relies on this without support.

    If training data is transformed for privacy, server-side proxy data is less relevant than on-device data.

    “if training data is transformed for privacy consideration, server-side proxy data is less relevant than on-device data.”
  • The paper relies on this without support.

    The computation capability of a UE is relatively weak.

    “the computation capability of a UE is relatively weak”
  • The paper relies on this without support.

    The training process of a DRL agent may introduce extra energy consumption of a UE.

    “the training process of a DRL agent may introduce extra energy consumption of a UE.”
  • The paper relies on this without support.

    DRL techniques require intensive computation capacity for finding optimal solutions.

    “DRL techniques require intensive computation capacity for finding the optimal solutions.”
  • The paper relies on this without support.

    There is not enough time and data for training a DRL agent in every UE and edge node.

    “there shall not have enough time and data for training.”
  • The paper relies on this without support.

    UEs are often unpredictably off-line or allocated with poor communication resources.

    “UEs are often unpredictably off-line or allocated with poor communication resources.”
  • The paper relies on this without support.

    Some UEs may have more computation tasks and some may experience more states of mobile networks, resulting in varying amounts of training data among UEs.

    “Some UEs may have more computation tasks to be handled and some may experience more states of mobile networks, resulting in varying amounts of training data among UEs.”
  • The paper relies on this without support.

    FL distributes the quality of knowledge across a large number of devices without necessarily centralizing the training data.

    “The core benefit of FL lies in distributing the quality of knowledge across a large number of devices without necessarily centralizing the training data.”
  • The paper relies on this without support.

    Server-side proxy data is less relevant than on-device data.

    “Server-side proxy data is less relevant than on-device data.”
  • The paper relies on this without support.

    In the MEC system, massive UEs and edge nodes could act as perceptrons and acquire various, abundant and personalized data for updating the global DL model.

    “In the MEC system, massive UEs and edge nodes could act as perceptrons and acquire various, abundant and personalized data for updating the global DL model.”
  • The paper relies on this without support.

    FL inherently could address key issues about the availability of UEs and edge nodes and the unbalanced and non-IID data.

    “FL inherently could address key issues about the availability of UEs and edge nodes and the unbalanced and non-IID data.”
  • The paper relies on this without support.

    In FL, additional computation could be used to decrease the number of communication rounds to train a model.

    “In FL, additional computation could be used to decrease the number of communication rounds to train a model.”
  • The paper relies on this without support.

    An effective way to add computation is increasing computation per UE, i.e., adding more local SGD updates per round.

    “An effective way to add computation is increasing computation per UE, i.e., adding more local SGD updates per round.”
  • The paper relies on this without support.

    Learning takes long time of training as well as inferring according to the required accuracy level.

    “Learning takes long time of training as well as inferring according to the required accuracy level.”
  • The paper relies on this without support.

    In practice, massive training data are actually unable to be uploaded without any delay.

    “In practice, massive training data are actually unable to be uploaded without any delay.”
  • The paper relies on this without support.

    In the framework of FL, every client only needs to upload the update of its model.

    “In the framework of FL, every client only needs to upload the update of its model.”
  • The paper relies on this without support.

    In 5G, URLLC scenarios strongly desire very small delays and high reliability of the mobile system.

    “In 5G, the defined Ultra-Reliable Low-Latency Communications (URLLC) scenarios strongly desire very small delays and high reliability of the mobile system.”
  • The paper relies on this without support.

    General deep learning-based optimization and prediction schemes take quite long running time of recursions for converging to the results, which is inappropriate for mobile edge systems.

    “However, general deep learning-based optimization and prediction schemes take quite long running time of recursions for converging to the results, which is inappropriate for mobile edge systems; particularly the system-level edge computing tasks desiring rapid responses in the scale of millisecond.”
  • The authors state this as an assumption.

    The experiment assumes an ideal wireless environment.

    “Nonetheless, this experiment assumes an ideal wireless environment.”
25 of 25

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Due to FL's properties, imbalanced and non-IID information can be handled appropriately, ensuring that the AI system's performance is not limited and that a large device in multiple contexts may be trained with their local data and local model without difficulty.

    “Again, due to FL’s properties, imbalanced and non-IID information can be handled appropriately, ensuring that the AI system’s performance is not limited and that a large device in multiple contexts may be trained with their local data and local model without difficulty [211].”
  • In [9] an adaptive control scheme was proposed to adapt the global FL aggregation frequency.

    “In [9] an adaptive control scheme was proposed to adapt the global FL aggregation frequency.”
  • This adaptive control scheme offers a desirable tradeoff between global model aggregation and local model update to minimize the loss function with resource budget constraint.

    “This adaptive control scheme offers a desirable tradeoff between global model aggregation and local model update to minimize the loss function with resource budget constraint.”

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. 2014, Mobile Edge Computing – Introductory Technical White Paper

Cited by

Sorted by citations

Authors
Wang, X., Han, Y., Wang, C., Zhao, Q., Chen, X., & Chen, M.
Affiliations
  • Tianjin University (CN)
  • Huawei Technologies (China) (CN)
  • Arizona State University (US)
  • Huazhong University of Science and Technology (CN)
Venue
IEEE Network
Published
2019-09
Volume
33
Issue
5
Pages
156-165
ISSN
  • 0890-8044 (ISSN-L)
  • 1558-156X
OpenAlex
W2962804345
Cited by
1,030
References
17
Citations by year
2026: 44 · 2025: 95 · 2024: 127 · 2023: 165 · 2022: 215 · 2021: 196 · 2020: 160 · 2019: 26 · 2018: 2
FWCI
81.72
Type
journal article
Language
en
Open access
Locations
  • IEEE Network (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Computer Science › Computer Networks and Communications › IoT and Edge/Fog Computing
  • Physical Sciences › Computer Science › Artificial Intelligence › Privacy-Preserving Technologies in Data
  • Physical Sciences › Computer Science › Computer Networks and Communications › Caching and Content Delivery
Keywords
mobile edge computing, federated learning, deep reinforcement learning, edge caching, content distribution, communication burden reduction, edge nodes, device collaboration, dynamic optimization

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-09.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-09.

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