human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "on the continuous coverage problem for a swarm of uavs"
  Abstract: Unmanned aerial vehicles (UAVs) can be used to provide wireless network and remote surveillance coverage for disaster-affected areas. During such a situation, the UAVs need to return periodically to a charging station for recharging, due to their limited battery capacity. We study the problem of minimizing the number of UAVs required for a continuous coverage of a given area, given the recharging requirement. We prove that this problem is NP-complete. Due to its intractability, we study partitioning the coverage graph into cycles that start at the charging station. We first characterize the minimum number of UAVs to cover such a cycle based on the charging time, the traveling time, and the number of subareas to be covered by the cycle. Based on this analysis, we then develop an efficient algorithm, the cycles with limited energy algorithm. The straightforward method to continuously cover a given area is to split it into N subareas and cover it by N cycles using N additional UAVs. Our simulation results examine the importance of critical system parameters: the energy capacity of the UAVs, the number of subareas in the covered area, and the UAV charging and traveling times. We demonstrate that the cycles with limited energy algorithm requires 69%–94% fewer additional UAVs relative to the straightforward method, as the energy capacity of the UAVs is increased, and 67%–71% fewer additional UAVs, as the number of subareas is increased.

Connected through hyperedge HE-1 (induced by source paper "unmanned aerial vehicles uavs a survey on civil applications and key research challenges"):
  with members:
    - "resource allocation for solar powered uav communication systems"
    - "3 d placement of an unmanned aerial vehicle base station for maximum coverage of users with different qos requirements"
    - "indoor mobile coverage problem using uavs"
    - "the sky is not the limit lte for unmanned aerial vehicles"
    - "a tutorial on uavs for wireless networks applications challenges and open problems"
    - "wireless communication using unmanned aerial vehicles uavs optimal transport theory for hover time optimization"
    - "efficient 3d placement of a uav using particle swarm optimization"
    - "placement optimization of uav mounted mobile base stations"

Connected through hyperedge HE-2 (induced by source paper "optimal placement of a uav to maximize the lifetime of wireless devices"):
  with members:
    - "indoor mobile coverage problem using uavs"
    - "efficient 3d placement of a uav using particle swarm optimization"
    - "providing wireless coverage to high rise buildings using uavs"
    - "energy trade off in ground to uav communication via trajectory design"
    - "optimal transport theory for power efficient deployment of unmanned aerial vehicles"
    - "throughput maximization for mobile relaying systems"
    - "drone small cells in the clouds design deployment and performance analysis"

Connected through hyperedge HE-3 (induced by source paper "efficient 3d placement of a uav using particle swarm optimization"):
  with members:
    - "on the number and 3d placement of drone base stations in wireless cellular networks"
    - "providing wireless coverage to high rise buildings using uavs"
    - "efficient deployment of multiple unmanned aerial vehicles for optimal wireless coverage"
    - "optimal transport theory for power efficient deployment of unmanned aerial vehicles"
    - "drone small cells in the clouds design deployment and performance analysis"

Connected through hyperedge HE-4 (induced by source paper "providing wireless coverage to high rise buildings using uavs"):
  with members:
    - "on the number and 3d placement of drone base stations in wireless cellular networks"
    - "efficient 3d placement of a uav using particle swarm optimization"
    - "efficient deployment of multiple unmanned aerial vehicles for optimal wireless coverage"
    - "optimal transport theory for power efficient deployment of unmanned aerial vehicles"
    - "drone small cells in the clouds design deployment and performance analysis"

Connected through hyperedge HE-5 (induced by source paper "maximizing indoor wireless coverage using uavs equipped with directional antennas"):
  with members:
    - "on the number and 3d placement of drone base stations in wireless cellular networks"
    - "providing wireless coverage to high rise buildings using uavs"
    - "efficient deployment of multiple unmanned aerial vehicles for optimal wireless coverage"
    - "mobile internet of things can uavs provide an energy efficient mobile architecture"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.IT(Information Theory)