human: Given a node-centered hypergraph: <hypergraph>, where nodes represent authors and hyperedges represent groups of authors who co-authored the same paper.

Details of the hypergraph:
Center node: "Trust management systems for wireless sensor networks: Best practices"
  Abstract: Wireless sensor networks (WSNs) have been proven a useful technology for perceiving information about the physical world and as a consequence has been used in many applications such as measurement of temperature, radiation, flow of liquids, etc. The nature of this kind of technology, and also their vulnerabilities to attacks make the security tools required for them to be considered in a special way. The decision making in a WSN is essential for carrying out certain tasks as it aids sensors establish collaborations. In order to assist this process, trust management systems could play a relevant role. In this paper, we list the best practices that we consider are essential for developing a good trust management system for WSN and make an analysis of the state of the art related to these practices.

Connected through hyperedge HE-1 (induced by source paper "A distributed reputation and trust management scheme for mobile peer-to-peer networks"):
  with members:
    - "Countering Malicious Nodes of Inconsistent Behaviors in WSNs: A Combined Approach of Statistic Reputation and Time Series"

Connected through hyperedge HE-2 (induced by source paper "Providing trust in wireless sensor networks using a bio-inspired technique"):
  with members:
    - "Taxonomy of trust: Categorizing P2P reputation systems"

Question: Please tell me which research area the center author belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science