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检索条件"主题词=Consensus algorithm"

共 2595 条记录，以下是121-130 订阅

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Improvement and Application of Blockchain consensus algorithm for Distributed Power Energy System 8

Improvement and Application of Blockchain Consensus Algorith...

引用

IEEE 8th International Conference on Big Data Analytics (ICBDA)

作者： Liang, Junlong Wu, Xiaoming Liu, Xiangzhi Chen, Ran Qilu Univ Technol Shandong Acad Sci Shandong Comp Sci Ctr Natl Supercomp Ctr Jinan Jinan Peoples R China

ISBN: (纸本)9798350310764

This article focuses on the application of blockchain consensus algorithms in the power energy trading system and the comparison of these algorithms such as PBFT(Practical Byzantine Fault Tolerance), Raft and IBFT(Istanbul Byzantine Fault Tolerance). The article introduces the concept of blockchain consensus algorithms and its application in power energy trading system. It then provides a brief overview of the three algorithms and their underlying structures. The comparison of the algorithms is done in terms of features such as scalability, reliability and security. The article also provides an overview of the advantages and disadvantages of each algorithm and its application in power energy trading system. We examine the blockchain partition algorithm improved by the integration of Raft consensus and IBFT consensus, with a special focus on the advantages of using a hybrid algorithm in distributed networks. We discuss the need for consensus algorithms that are well-suited to blockchain networks and the improved security provided by a consensus algorithm incorporating both Raft and *** also discuss the implications of incorporating Raft and IBFT into a blockchain partition algorithm and its potential scalability. In conclusion, we provide a synthesis of our research, with potentials for further studies and contributions in this field.

关键词： Blockchain consensus algorithm distributed power energy security performance scalability

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Finite-time consensus algorithm for Power Systems using Cucker-Smale Model

Finite-time Consensus Algorithm for Power Systems using Cuck...

引用

IEEE IAS Global Conference on Renewable Energy and Hydrogen Technologies (GlobConHT)

作者： Gulzar, Muhammad Majid Munaward, Muhammad Alismail, Fahad Khalid, Muhammad King Fahd Univ Petr Minerals Control & Instrumentat Engn Dept Dhahran 31261 Saudi Arabia King Fahd Univ Petr Minerals Ctr Renewable Energy & Power Syst Dhahran 31261 Saudi Arabia King Fahd Univ Petr Minerals Dept Elect Engn Dhahran 31261 Saudi Arabia King Fahd Univ Petr Minerals SDAIA KFUPM Joint Res Ctr Artificial Intelligence Dhahran 31261 Saudi Arabia Univ Cent Punjab Dept Elect Engn Lahore Pakistan

ISBN: (纸本)9798350332117

consensus is one of the most actively studied topics within the realm of multi-agent systems. It generally aims to drive flocks to achieve a common group objective. In this study, a Cucker-Smale model for consensus algorithm has been implemented to resolve the issue of flocking for power systems. By using this model, consensus can be achieved by randomly chosing the initial positions and velocities of the birds with a minimum number of iterations. Moreover, at the end the simulation results for 7 and 25 birds have been presented to confirm the convergence of the agent's average velocities and directions.

关键词： Multi-agent systems consensus algorithm Cucker-Smale model Flocking Iterations

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EBFT : A Hierarchical and Group-Based Byzantine Fault Tolerant consensus algorithm 12

EBFT : A Hierarchical and Group-Based Byzantine Fault Tolera...

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12th IEEE International Conference on Software Engineering and Service Science (IEEE ICSESS)

作者： Li, Wenzheng He, Mingsheng Beijing Univ Technol Fac Informat Technol Beijing 100124 Peoples R China

ISBN: (纸本)9781665415064

consensus algorithm is a key component of the blockchain technology, and also a hot topic in distributed system research. Under the background that blockchain technology has entered the development stage of consortium blockchain, the Practical Byzantine Fault Tolerance (PBFT), proposed by Miguel and Liskov in 1999, occupies an vital position. Although PBFT has many advantages, it does not scale well because of O(n(2)) communication complexity. In order to solve this drawback, we present a hierarchical and group-based BFT consensus algorithm - efficient BFT (EBFT). It utilizes a novel network topology to effectively reduce communication times among nodes and provides O(n) communication complexity. The experimental results show that EBFT optimizes the consensus process involving large-scale nodes, so that the consortium blockchain can be applied to a wider range of application scenarios.

关键词： PBFT consortium blockchain consensus algorithm high performance

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Performance Optimized Leader Selection consensus algorithm for Consortium Blockchain Using Trust Values of Nodes 21st

Performance Optimized Leader Selection Consensus Algorithm f...

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21st International Conference on Cooperative Design, Visualization, and Engineering (CDVE)

作者： Hussain, Munir Mehmood, Amjad Khan, Muhammad Altaf Lloret, Jaime Maple, Carsten Kohat Univ Sci & Informat Technol Inst Comp Kohat Pakistan Univ Politecn Valencia Integrated Management Coastal Res Inst C Paranimf 1 Valencia 46730 Spain Univ Warwick WMG Secure Cyber Syst Res Grp CSCRG Coventry CV4 7AL W Midlands England

ISBN: (纸本)9783031713149;9783031713156

The backbone of Blockchain technology is a consensus algorithm because it plays a significant role in terms of network efficiency, security and scalability. Currently, a consensus algorithm is the hot research topic since many of the existing consensus algorithms are facing some issues in terms of low throughput, high latency, high bandwidth consumption and CPU utilization. Therefore, to ensure high performances, this paper proposed a novel consensus algorithm based on nodes trust values for consortium blockchain. The proposed paper divides mining nodes of the network into two groups basis on trust values. A mining node is randomly nominated as a leader node from the group of high trust values. This improves network performances by increasing throughput, reducing latency, reducing communication overhead cost and CPU utilization. Hyperledger Fabric v2.1 is used to check the performances of the proposed consensus algorithm. The result shows that it has better performances in term low latency, high throughput, low communication bandwidth cost and low CPU unitization.

关键词： Blockchain consensus algorithm trust leader selection Hyperledger Fabric

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A Pattern for Proof of Work consensus algorithm in Blockchain 26

A Pattern for Proof of Work Consensus Algorithm in Blockchai...

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European Conference on Pattern Languages of Programs (EuroPLoP)

作者： Ul Abadin, Zain Syed, Madiha Haider Quaid I Azam Univ Inst Informat Technol Islamabad Pakistan

ISBN: (纸本)9781450389976

Blockchain technology has gained immense popularity over the last decade. It has transformed several industries by enabling processes to work in a secure and decentralized manner. Blockchain consists of blocks that are linked together through cryptography. Blockchain is a distributed ledger that contains a set of sequenced blocks of data. Each block records transaction data in a transparent, immutable, and secure fashion. consensus algorithm is the key part of this technology as it is used for the decision-making process among nodes in the blockchain network. Nodes in the verifying network use consensus algorithm to reach mutual agreement about state of the blockchain whenever a new block is added. This makes it possible to accept any transaction in the blockchain. Many consensus algorithms have been proposed in the literature each having its own performance and security characteristics. In this paper, we present a pattern for one of the most widely used blockchain consensus algorithms, which is the Proof of Work (PoW) algorithm. This paper is a part of our project on blockchain architecture and patterns.

关键词： Blockchain consensus algorithm Architectural pattern Security validation mechanism

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Research on Agricultural Products Supply Chain Traceability System - Blockchain consensus algorithm optimization 9

Research on Agricultural Products Supply Chain Traceability ...

引用

9th International Conference on Traffic and Logistic Engineering (ICTLE)

作者： Song, Chunrong Li, Chen Beijing Informat Sci & Technol Univ Sch Informat Management Beijing Peoples R China

ISBN: (纸本)9781665427524

In order to improve the authenticity and credibility of agricultural products traceability information, this paper proposes an improved blockchain consensus algorithm FPBFT for the whole process traceability system from planting to consumption of agricultural products supply chain based on blockchain, in view of the high communication overhead and low efficiency of the consensus algorithm PBFT of the coalition blockchain when the information is on the chain. The credit value of the nodes is calculated based on the behavior of each node in the consensus process, and the nodes are given different voice rights based on the credit value;then a simplified consistency protocol is proposed to reduce the time complexity by combining the node characteristics of the coalition chain. Finally, a comparison experiment is conducted to verify that the improved PBFT algorithm can reduce the communication volume and improve the efficiency.

关键词： Blockchain agricultural product supply chain traceability consensus algorithm

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GS-PBFT: A Practical Byzantine consensus algorithm Based on Scoring Mechanism and Stake Mechanism 13

GS-PBFT: A Practical Byzantine Consensus Algorithm Based on ...

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13th International Conference of Information and Communication Technology, ICTech 2024

作者： Yu, JinGang Xue, HaoJie University of Chinese Academy of Sciences Shenyang Institute of Computer Technology Chinese Academy of Sciences Shenyang China

ISBN: (纸本)9798350376258

Practical Byzantine Fault Tolerance algorithm (PBFT) can improve efficiency on the basis of the original algorithm, but there are still some issues such as high algorithm complexity, arbitrary decision of primary nodes, and poor scalability. In order to solve these issues, this paper proposes an optimized algorithm GS-PBFT based on the scoring mechanism and the stake mechanism. GS-PBFT first groups the nodes, and the primary nodes in the group also need to participate in the consensus outside the group. Secondly, a scoring mechanism is proposed to score nodes based on whether they can correctly finish the consensus and the efficiency of taking part in consensus. Malicious nodes can be identified and eliminated, and nodes that are unable to participate in consensus due to downtime can be quickly restored. Finally, a stake mechanism is proposed to improve the active nodes' weight, thereby accelerating overall efficiency. Simulation experiments show that compared with the original algorithm, the GS-PBFT algorithm proposed in this paper has greatly improved efficiency, tolerance of malicious nodes, and throughput indicators. ©2024 IEEE.

关键词： consensus algorithm

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ISRaft consensus algorithm for Autonomous Units 29

ISRaft Consensus Algorithm for Autonomous Units

引用

29th IEEE International Conference on Network Protocols (ICNP)

作者： Zamir, Linir Shaan, Aman Nojoumian, Mehrdad Florida Atlantic Univ Dept Elect Engn & Comp Sci Boca Raton FL 33431 USA

ISBN: (纸本)9781665441315

consensus protocols are a key feature in decentralized systems where multiple unreliable nodes operate, e.g., in Blockchain technologies with many worldwide applications such as supply chain management, cryptocurrencies and information sharing. ISRaft is a consensus protocol built upon Raft, a previously developed protocol that is used for replicated state machines when a group of nodes is required to achieve a consensus related to the state of the machine. This paper therefore proposes an alternative version of the ISRaft consensus protocol to allow communication among nodes in a secured fashion while maintaining the security features of the original ISRaft algorithm even in the presence of adversarial nodes. The proposed model utilizes a trust parameter to enforce cooperation, i.e., a trust value is assigned to each node to prevent malicious activities over time. This is a practical solution for autonomous units with resource-constrained devices where a regular encrypted communication method can negatively affect the system performance.

关键词： consensus algorithm Autonomous System Blockchain Technology Trust Model Raft

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User Control in Proximity Marketing: A Basic consensus algorithm

User Control in Proximity Marketing: A Basic Consensus Algor...

引用

IEEE Conference on Global Communications (IEEE GLOBECOM) - Intelligent Communications for Shared Prosperity

作者： Chahal, Fatima Fouchal, Hacene Gaiti, Dominique Univ Technol Troyes LIST3N Troyes France Univ Reims CReSTIC Reims France

ISBN: (纸本)9798350310900

A marketing strategy, which is a comprehensive plan, describes an organization's approach to promoting and selling its products and services, including target audience identification, brand message, and promotional techniques. Proximity marketing is a type of marketing strategy that uses wireless technologies to target customers based on their geographic location or proximity to a specific store or location. Businesses regularly use it to get customers to their physical locations, increase sales, and raise awareness of their brands. Using wireless technologies like Bluetooth and Wi-Fi, targeted messages are sent to customers' mobile devices when they are near a physical store in a sort of location-based marketing. Concerns around data security and privacy are one of the potential issues with proximity marketing. Customers can feel that their data is not under their control or that it is being collected and used without their consent. Businesses can take steps to address these worries, such as providing customers with the choice to opt-in or opt-out of receiving marketing messages and being explicit and honest about data collection and use. Even when customers explicitly accept the gathering and usage of their data, they may nevertheless feel uneasy about it. So we suggest a Control algorithm (CA) inspired by the concept of the consensus algorithm in the blockchain, which would give people control over their data rather than businesses, in order to solve these concerns. And this can support the development of customer and business confidence.

关键词： Wireless Networks Proximity marketing Opt-in/Opt-out consensus algorithm

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An Improved Delegated Proof of Stake consensus algorithm 9

An Improved Delegated Proof of Stake Consensus Algorithm

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International Conference on Identification, Information and Knowledge in the Internet of Things (IIKI)

作者： Hu, Qian Yan, Biwei Han, Yubing Yu, Jiguo Qilu Univ Technol Sch Comp Sci & Technol Shandong Acad Sci Jinan 250353 Peoples R China Qufu Normal Univ Sch Math Sci Qufu 273165 Shandong Peoples R China Natl Supercomp Ctr Jinan Shangdong Comp Sci Ctr Jinan 250014 Peoples R China Shandong Lab Comp Networks Jinan 250014 Peoples R China

Aiming at the problems of the existing DPoS(Delegated Proof of Stake) consensus algorithm, such as low enthusiasm of voting nodes and difficulties in dealing with malicious nodes, we improve the traditional DPoS consensus algorithm and propose a reputation-based delegated proof of stake consensus algorithm, called Reputation-DPoS. In our Reputation-DPoS, the reputation model is introduced. By evaluating the behavior of nodes, nodes are divided into different trusted states, and high-quality nodes in the network are selected as consensus nodes to reduce security risks and improve efficiency. Besides, incentive methods of reputation and token are used to improve the enthusiasm of nodes to participate in voting. Simulation results show that our Reputation-DPoS can reduce the probability of malicious nodes being selected and optimize the state of nodes in DPoS. Nodes with good behavior will get more votes and rewards, which will motivate nodes and improve the security of the system. Insert here your abstract text. (C) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://***/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the International Conference on Identification, Information and Knowledge in the internet of Things, 2020.

关键词： Blockchain consensus algorithm DPoS Reputation Model

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