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: "compflex comp for in band wireless full duplex"
  Abstract: In this letter we consider emulation of a Full Duplex (FD) cellular base station (BS) by using two spatially separated and coordinated half duplex (HD) BSs. The proposed system is termed CoMPflex (CoMP for In-Band Wireless Full Duplex) and at a given instant it serves two HD mobile stations (MSs), one in the uplink and one in the downlink, respectively. We evaluate the performance of our scheme by using a geometric extension of the one-dimensional Wyner model, which takes into account the distances between the devices. The results show that CoMPflex leads to gains in terms of sum-rate and energy efficiency with respect to the ordinary FD, as well as with respect to a baseline scheme based on unidirectional traffic.

Connected through hyperedge HE-1 (induced by source paper "performance of network assisted full duplex for cell free massive mimo"):
  with members:
    - "on the feasibility of full duplex large scale mimo cellular systems"
    - "cell free massive mimo versus small cells"
    - "full duplex emulation via spatial separation of half duplex nodes in a planar cellular network"
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "cell free massive mimo uniformly great service for everyone"
    - "interference management in 5g reverse tdd hetnets with wireless backhaul a large system analysis"
    - "in band alpha duplex scheme for cellular networks a stochastic geometry approach"
    - "multipair full duplex relaying with massive arrays and linear processing"

Connected through hyperedge HE-2 (induced by source paper "joint sparse beamforming and power control for large scale das with network assistant full duplex"):
  with members:
    - "performance of network assisted full duplex for cell free massive mimo"
    - "fractional programming for communication systems part ii uplink scheduling via matching"
    - "cross layer design for downlink multihop cloud radio access networks with network coding"
    - "analysis of massive mimo enabled downlink wireless backhauling for full duplex small cells"
    - "energy efficiency of downlink transmission strategies for cloud radio access networks"
    - "d2d enhanced heterogeneous cellular networks with dynamic tdd"
    - "on the spectral efficiency of full duplex small cell wireless systems"
    - "sparse beamforming and user centric clustering for downlink cloud radio access network"

Connected through hyperedge HE-3 (induced by source paper "multi channel access solutions for 5g new radio"):
  with members:
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "an overview of load balancing in hetnets old myths and open problems"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"

Connected through hyperedge HE-4 (induced by source paper "on a user centric base station cooperation scheme for reliable communications"):
  with members:
    - "full duplex emulation via spatial separation of half duplex nodes in a planar cellular network"
    - "reliable uplink communication through double association in wireless heterogeneous networks"
    - "a stochastic geometry framework for analyzing pairwise cooperative cellular networks"
    - "ultra reliable communication in 5g wireless systems"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-5 (induced by source paper "full duplex emulation via spatial separation of half duplex nodes in a planar cellular network"):
  with members:
    - "harvesting full duplex rate gains in cellular networks with half duplex user terminals"
    - "throughput analysis for full duplex wireless networks with imperfect self interference cancellation"
    - "outage analysis of full duplex architectures in cellular networks"
    - "five disruptive technology directions for 5g"
    - "in band full duplex wireless challenges and opportunities"
    - "analytical modeling of uplink cellular networks"
    - "virtual full duplex wireless communication via rapid on off division duplex"

Connected through hyperedge HE-6 (induced by source paper "why to decouple the uplink and downlink in cellular networks and how to do it"):
  with members:
    - "analysis of the decoupled access for downlink and uplink in wireless heterogeneous networks"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"
    - "what will 5g be"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "five disruptive technology directions for 5g"
    - "joint resource partitioning and offloading in heterogeneous cellular 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)