Social and Physical Attributes-Defined Trust Evaluation for Effective Collaborator Selection in Human-Device Coexistence Systems
Botao Zhu, Xianbin Wang
TL;DR
This paper addresses trust-based collaborator selection in human-device coexistence systems by fusing social and physical attributes. It introduces HSLCCA, which combines a relationship hypergraph representation, two-view HGNN learning, and canonical correlation analysis-based self-supervision to produce device embeddings for trust evaluation. Trust is computed as cosine similarity between embeddings, enabling identification of the most trusted collaborator for a given initiator. Experiments on Sigcomm-2009 data demonstrate that HSLCCA outperforms baselines in accurately distinguishing trusted devices and yields semantically rich embeddings, supporting robust, scalable human-device collaboration.
Abstract
In human-device coexistence systems, collaborations among devices are determined by not only physical attributes such as network topology but also social attributes among human users. Consequently, trust evaluation of potential collaborators based on these multifaceted attributes becomes critical for ensuring the eventual outcome. However, due to the high heterogeneity and complexity of physical and social attributes, efficiently integrating them for accurate trust evaluation remains challenging. To overcome this difficulty, a canonical correlation analysis-enhanced hypergraph self-supervised learning (HSLCCA) method is proposed in this research. First, by treating all attributes as relationships among connected devices, a relationship hypergraph is constructed to comprehensively capture inter-device relationships across three dimensions: spatial attribute-related, device attribute-related, and social attribute-related. Next, a self-supervised learning framework is developed to integrate these multi-dimensional relationships and generate device embeddings enriched with relational semantics. In this learning framework, the relationship hypergraph is augmented into two distinct views to enhance semantic information. A parameter-sharing hypergraph neural network is then utilized to learn device embeddings from both views. To further enhance embedding quality, a CCA approach is applied, allowing the comparison of data between the two views. Finally, the trustworthiness of devices is calculated based on the learned device embeddings. Extensive experiments demonstrate that the proposed HSLCCA method significantly outperforms the baseline algorithm in effectively identifying trusted devices.