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: "energy efficient sleep awake aware eesaa intelligent sensor network routing protocol"
  Abstract: Wireless Sensor Networks (WSNs), with growing applications in the environment which are not within human reach have been addressed tremendously in the recent past. For optimized working of network many routing algorithms have been proposed, mainly focusing energy efficiency, network life-time, clustering processes. Considering homogeneity of network, we proposed Energy Efficient Sleep Awake Aware (EESAA) intelligent routing protocol for WSNs. In our proposed technique we evaluate and enhance certain issues like network stability, network lifetime and cluster head selection process. Utilizing the concept of characteristical pairing among sensor nodes energy utilization is optimized. Simulation results show that our proposed protocolnificantly improved the network parameters and can be a useful approach for WSNs.

Connected through hyperedge HE-1 (induced by source paper "modeling and evaluating performance of routing operations in reactive routing protocols"):
  with members:
    - "evaluating and comparing probability of path loss in dsdv olsr and dymo at 802 11 and 802 11p"
    - "ach away cluster heads scheme for energy efficient clustering protocols in wsns"
    - "heer hybrid energy efficient reactive protocol for wireless sensor networks"
    - "evaluating wireless reactive routing protocols with linear programming model for wireless ad hoc networks"
    - "on energy efficiency and delay minimization in reactive protocols in wireless multi hop networks"
    - "e horm an energy efficient hole removing mechanism in wireless sensor networks"
    - "density controlled divide and rule scheme for energy efficient routing in wireless sensor networks"
    - "towards lp modeling for maximizing throughput and minimizing routing delay in proactive protocols in wireless multi hop networks"

Connected through hyperedge HE-2 (induced by source paper "energy optimization and performance analysis of cluster based routing protocols extended from leach for wsns"):
  with members:
    - "eddeec enhanced developed distributed energy efficient clustering for heterogeneous wireless sensor networks"
    - "on energy efficiency and delay minimization in reactive protocols in wireless multi hop networks"
    - "beenish balanced energy efficient network integrated super heterogeneous protocol for wireless sensor networks"
    - "improving network efficiency by removing energy holes in wsns"
    - "e horm an energy efficient hole removing mechanism in wireless sensor networks"
    - "divide and rule scheme for energy efficient routing in wireless sensor networks"
    - "towards lp modeling for maximizing throughput and minimizing routing delay in proactive protocols in wireless multi hop networks"
    - "srp ms a new routing protocol for delay tolerant wireless sensor networks"

Connected through hyperedge HE-3 (induced by source paper "measuring fatigue of soldiers in wireless body area sensor networks"):
  with members:
    - "eddeec enhanced developed distributed energy efficient clustering for heterogeneous wireless sensor networks"
    - "hybrid deec towards efficient energy utilization in wireless sensor networks"
    - "q leach a new routing protocol for wsns"
    - "heer hybrid energy efficient reactive protocol for wireless sensor networks"
    - "energy efficient mac protocols in wireless body area sensor networks a survey"
    - "density controlled divide and rule scheme for energy efficient routing in wireless sensor networks"
    - "adaptive reliable medium access control protocol for wireless body area networks"
    - "ubiquitous healthcare in wireless body area networks"

Connected through hyperedge HE-4 (induced by source paper "modleach a variant of leach for wsns"):
  with members:
    - "q leach a new routing protocol for wsns"
    - "beenish balanced energy efficient network integrated super heterogeneous protocol for wireless sensor networks"
    - "east energy efficient adaptive scheme for transmission in wireless sensor networks"
    - "hsep heterogeneity aware hierarchical stable election protocol for wsns"
    - "tsep threshold sensitive stable election protocol for wsns"
    - "analyzing energy efficiency and route selection of multi level hierarchal routing protocols in wsns"
    - "survey of extended leach based clustering routing protocols for wireless sensor networks"

Connected through hyperedge HE-5 (induced by source paper "beenish balanced energy efficient network integrated super heterogeneous protocol for wireless sensor networks"):
  with members:
    - "ceec centralized energy efficient clustering a new routing protocol for wsns"
    - "hsep heterogeneity aware hierarchical stable election protocol for wsns"
    - "tsep threshold sensitive stable election protocol for wsns"
    - "on performance evaluation of variants of deec in wsns"
    - "survey of extended leach based clustering routing protocols for wireless sensor networks"

Connected through hyperedge HE-6 (induced by source paper "energy aware error control in cooperative communication in wireless sensor networks"):
  with members:
    - "a comprehensive survey of mac protocols for wireless body area networks"
    - "identifying design requirements for wireless routing link metrics"
    - "interference and bandwidth adjusted etx in wireless multi hop networks"

Connected through hyperedge HE-7 (induced by source paper "eddeec enhanced developed distributed energy efficient clustering for heterogeneous wireless sensor networks"):
  with members:
    - "on performance evaluation of variants of deec in wsns"

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.NI(Networking and Internet Architecture)