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: "wireless sensor network virtualization a survey"
  Abstract: Wireless Sensor Networks (WSNs) are the key components of the emerging Internet-of-Things (IoT) paradigm. They are now ubiquitous and used in a plurality of application domains. WSNs are still domain specific and usually deployed to support a specific application. However, as WSNs' nodes are becoming more and more powerful, it is getting more and more pertinent to research how multiple applications could share a very same WSN infrastructure. Virtualization is a technology that can potentially enable this sharing. This paper is a survey on WSN virtualization. It provides a comprehensive review of the state-of-the-art and an in-depth discussion of the research issues. We introduce the basics of WSN virtualization and motivate its pertinence with carefully selected scenarios. Existing works are presented in detail and critically evaluated using a set of requirements derived from the scenarios. The pertinent research projects are also reviewed. Several research issues are also discussed with hints on how they could be tackled.

Connected through hyperedge HE-1 (induced by source paper "performance enhancement of diffusion based molecular communication with photolysis"):
  with members:
    - "type based sign modulation for molecular communication"
    - "a comprehensive survey of recent advancements in molecular communication"
    - "improving receiver performance of diffusive molecular communication with enzymes"
    - "isi mitigation techniques in molecular communication"
    - "symbol interval optimization for molecular communication with drift"
    - "diffusion based nanonetworking a new modulation technique and performance analysis"
    - "molecular communication in fluid media the additive inverse gaussian noise channel"

Connected through hyperedge HE-2 (induced by source paper "iot virtualization a survey of software definition function virtualization techniques for internet of things"):
  with members:
    - "network function virtualization state of the art and research challenges"
    - "publish subscribe enabled software defined networking for efficient and scalable iot communications"
    - "a system architecture for software defined industrial internet of things"
    - "research directions in network service chaining"

Connected through hyperedge HE-3 (induced by source paper "nfv and sdn based distributed iot gateway for large scale disaster management"):
  with members:
    - "robots as a service in cloud computing search and rescue in large scale disasters case study"
    - "network functions virtualization architecture for gateways for virtualized wireless sensor and actuator networks"
    - "network function virtualization state of the art and research challenges"
    - "wireless sensor network virtualization early architecture and research perspectives"

Connected through hyperedge HE-4 (induced by source paper "a survey of multi objective optimization in wireless sensor networks metrics algorithms and open problems"):
  with members:
    - "distributed energy spectral efficiency optimization for partial full interference alignment in multi user multi relay multi cell mimo systems"
    - "energy efficient ofdma networks maintaining statistical qos guarantees for delay sensitive traffic"
    - "markov decision processes with applications in wireless sensor networks a survey"
    - "accuracy of homology based coverage hole detection for wireless sensor networks on sphere"
    - "end to end reliability aware scheduling for wireless sensor networks"
    - "multiband spectrum access great promises for future cognitive radio networks"
    - "spectral and energy spectral efficiency optimization of joint transmit and receive beamforming based multi relay mimo ofdma cellular networks"
    - "achieving maximum energy efficiency in multi relay ofdma cellular networks a fractional programming approach"

Connected through hyperedge HE-5 (induced by source paper "survey on network virtualization hypervisors for software defined networking"):
  with members:
    - "network function virtualization state of the art and research challenges"
    - "nfv based gateways for virtualized wireless sensor networks a case study"
    - "software defined and virtualized future mobile and wireless networks a survey"
    - "software defined networking a comprehensive survey"
    - "nfv state of the art challenges and implementation in next generation mobile networks vepc"
    - "scalability and resilience of software defined networking an overview"
    - "software defined networking state of the art and research challenges"
    - "disco distributed multi domain sdn controllers"

Connected through hyperedge HE-6 (induced by source paper "software defined optical access networks sdoans a comprehensive survey"):
  with members:
    - "network function virtualization state of the art and research challenges"
    - "fronthaul constrained cloud radio access networks insights and challenges"
    - "system architecture and key technologies for 5g heterogeneous cloud radio access networks"
    - "renewable energy aware inter datacenter virtual machine migration over elastic optical networks"
    - "nfv state of the art challenges and implementation in next generation mobile networks vepc"
    - "scalability and resilience of software defined networking an overview"
    - "group sparse beamforming for green cloud ran"
    - "information centric networking over sdn and openflow architectural aspects and experiments on the ofelia testbed"

Connected through hyperedge HE-7 (induced by source paper "getting virtualized wireless sensor networks iaas ready for paas"):
  with members:
    - "wireless sensor network virtualization early architecture and research perspectives"
    - "a data annotation architecture for semantic applications in virtualized wireless sensor networks"

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)