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Table 1 Frameworks and metrics comparison

From: Extending trust management with cooperation incentives: a fully decentralized framework for user-centric network environments

Framework/metric Fully decentralized Sybil resistant Incentives
Certain trust
Martucci et al.
Appleseed
Eigen trust
Feldman et al.
Credible recommendations
Bogliolo et al.
Nuglets /✗a
Pirzada et al.
Xing et al.
  1. aWhile it provides means to greatly reduce Sybil attacks close to a full extent, it is not 100 % Sybil resistant (i.e. there are mechanisms to try to deter Sybil nodes or to detect them, but those not deterred or detected still are able to cheat)