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Big Data: Storage, Sharing, and Security
review some objects of common interests (e.g., products or dealers), and use the aggregated
ratings to derive trust or reputation scores of both sources and objects in the systems [24].
These reputation scores can help other entities in deciding whether or not to trust a given
entity or purchase a certain object [2]. Trust and reputation scores can be obtained from both
individual and social perspectives [22,23]. Individual trust often comes from experiences of
direct interaction with transaction partners while social trust is computed from third-party
experiences, which might include both honest and