We introduce the concept of adaptive trust in crowdsourced IoT services. It is a customized fine-grained trust tailored for specific IoT consumers. Usage patterns of IoT consumers are exploited to provide an accurate trust value for service providers. A novel adaptive trust management framework is proposed to assess the dynamic trust of IoT services. The framework leverages a novel detection algorithm to obtain trust indicators that are likely to influence the trust level of a specific IoT service type. Detected trust indicators are then used to build service-to-indicator model to evaluate a service’s trust at each indicator . Similarly, a usage-to-indicator model is built to obtain the importance of each trust indicator for a particular usage scenario. The per-indicator trust and the importance of each trust indicator are utilized to obtain an overall value of a given service for a specific consumer. We conduct a set of experiments on a real dataset to show the effectiveness of the proposed framework.

中文翻译：

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众包物联网服务中的多用途信任

我们引入的概念对众包物联网服务的自适应信任。它是为特定物联网消费者量身定制的细粒度信任。利用物联网消费者的使用模式为服务提供商提供准确的信任值。一本小说自适应信任管理框架被提出来评估物联网服务的动态信任。该框架利用一种新颖的检测算法来获得可能影响特定物联网服务类型的信任级别的信任指标。然后使用检测到的信任指标来构建服务到指标模型来评估服务的相信每一个指标。同样，一个建立使用指标模型以获得每个信任指标对于特定使用场景的重要性。每个指标的信任度和每个信任指标的重要性被用来为特定消费者获取给定服务的总体价值。我们在真实数据集上进行了一组实验，以证明所提出框架的有效性。