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: "Underground structure monitoring with wireless sensor networks"
  Abstract: Environment monitoring in coal mines is an important application of wireless sensor networks (WSNs) that has commercial potential. We discuss the design of a structure-aware self-adaptive WSN system, SASA. By regulating the mesh sensor network deployment and formulating a collaborative mechanism based on a regular beacon strategy, SASA is able to rapidly detect structure variations caused by underground collapses. A prototype is deployed with 27 Mica2 motes. We present our implementation experiences as well as the experimental results. To better evaluate the scalability and reliability of SASA, we also conduct a large-scale trace-driven simulation based on real data collected from the experiments.

Connected through hyperedge HE-1 (induced by source paper "A wireless sensor network For structural monitoring"):
  with members:
    - "People-centric urban sensing"
    - "Fine-grained network time synchronization using reference broadcasts"
    - "Interference-aware fair rate control in wireless sensor networks"
    - "Low-Complexity Cooperative Coding for Sensor Networks using Rateless and LDGM Codes"
    - "Full length article: Channel model and analysis for wireless underground sensor networks in soil medium"
    - "Rethinking Data Management for Storage-centric Sensor Networks."

Connected through hyperedge HE-2 (induced by source paper "Multiple task scheduling for low-duty-cycled wireless sensor networks"):
  with members:
    - "Minimum-Energy Multicasting in Asynchronous Duty-Cycled Wireless Ad Hoc Networks"

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