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: "beam searching and transmission scheduling in millimeter wave communications"
  Abstract: Millimeter wave (mmW) wireless networks are capable to support multi-gigabit data rates, by using directional communications with narrow beams. However, existing mmW communications standards are hindered by two problems: deafness and single link scheduling. The deafness problem, that is, a misalignment between transmitter and receiver beams, demands a time consuming beam-searching operation, which leads to an alignment-throughput tradeoff. Moreover, the existing mmW standards schedule a single link in each time slot and hence do not fully exploit the potential of mmW communications, where directional communications allow multiple concurrent transmissions. These two problems are addressed in this paper, where a joint beamwidth selection and power allocation problem is formulated by an optimization problem for short range mmW networks with the objective of maximizing effective network throughput. This optimization problem allows establishing the fundamental alignment-throughput tradeoff, however it is computationally complex and requires exact knowledge of network topology, which may not be available in practice. Therefore, two standard-compliant approximation solution algorithms are developed, which rely on underestimation and overestimation of interference. The first one exploits directionality to maximize the reuse of available spectrum and thereby increases the network throughput, while imposing almost no computational complexity. The second one is a more conservative approach that protects all active links from harmful interference, yet enhances the network throughput by 100% compared to the existing standards. Extensive performance analysis provides useful insights on the directionality level and the number of concurrent transmissions that should be pursued. Interestingly, extremely narrow beams are in general not optimal.

Connected through hyperedge HE-1 (induced by source paper "analyzing the tradeoffs in using millimeter wave directional links for high data rate tactile internet applications"):
  with members:
    - "adaptive beamwidth selection for contention based access periods in millimeter wave wlans"
    - "low latency heterogeneous networks with millimeter wave communications"
    - "millimeter wave beam alignment large deviations analysis and design insights"
    - "coverage analysis for millimeter wave networks the impact of directional antenna arrays"
    - "realizing the tactile internet haptic communications over next generation 5g cellular networks"
    - "low latency millimeter wave communications traffic dispersion or network densification"
    - "performance analysis of ieee 802 11ad mac protocol"
    - "ultra reliable and low latency communication in mmwave enabled massive mimo networks"

Connected through hyperedge HE-2 (induced by source paper "joint path selection and rate allocation framework for 5g self backhauled mm wave networks"):
  with members:
    - "path selection and rate allocation in self backhauled mmwave networks"
    - "ultra reliable communication in 5g mmwave networks a risk sensitive approach"
    - "energy efficient interactive beam alignment for millimeter wave networks"
    - "ultra reliable and low latency wireless communication tail risk and scale"
    - "toward low latency and ultra reliable virtual reality"
    - "millimeter wave v2v communications distributed association and beam alignment"
    - "capacity scaling of cellular networks impact of bandwidth infrastructure density and number of antennas"
    - "joint load balancing and interference mitigation in 5g heterogeneous networks"

Connected through hyperedge HE-3 (induced by source paper "an analytical model for cbap allocations in ieee 802 11ad"):
  with members:
    - "performance analysis of ieee 802 11ad mac protocol"
    - "millimeter wave cellular wireless networks potentials and challenges"

Connected through hyperedge HE-4 (induced by source paper "interleaved training and training based transmission design for hybrid massive antenna downlink"):
  with members:
    - "millimeter wave beam alignment large deviations analysis and design insights"
    - "codebook based hybrid precoding for millimeter wave multiuser systems"
    - "performance scaling law for multi cell multi user massive mimo"
    - "an overview of signal processing techniques for millimeter wave mimo systems"
    - "hybrid digital and analog beamforming design for large scale antenna arrays"
    - "limited feedback hybrid precoding for multi user millimeter wave systems"
    - "turbo like beamforming based on tabu search algorithm for millimeter wave massive mimo systems"
    - "hybrid analog digital channel estimation and beamforming training throughput tradeoff"

Connected through hyperedge HE-5 (induced by source paper "ieee 802 11ay based mmwave wlans design challenges and solutions"):
  with members:
    - "performance analysis of integrated sub 6 ghz millimeter wave wireless local area networks"
    - "beamspace su mimo for future millimeter wave wireless communications"
    - "ieee 802 11ax high efficiency wlans"
    - "initial access in 5g mmwave cellular networks"
    - "flexible dual connectivity spectrum aggregation for decoupled uplink and downlink access in 5g heterogeneous systems"
    - "joint millimeter wave and microwave resources allocation in cellular networks with dual mode base stations"
    - "reciprocity calibration for massive mimo proposal modeling and validation"
    - "60 ghz mac standardization progress and way forward"

Connected through hyperedge HE-6 (induced by source paper "robust location aided beam alignment in millimeter wave massive mimo"):
  with members:
    - "millimeter wave beam selection using out of band spatial information"
    - "millimeter wave vehicular communication to support massive automotive sensing"
    - "an overview of signal processing techniques for millimeter wave mimo systems"
    - "hybrid digital and analog beamforming design for large scale antenna arrays"
    - "comparative analysis of initial access techniques in 5g mmwave cellular networks"
    - "limited feedback hybrid precoding for multi user millimeter wave systems"
    - "millimeter wave cellular networks a mac layer perspective"
    - "channel estimation and hybrid precoding for millimeter wave cellular systems"

Connected through hyperedge HE-7 (induced by source paper "on the beamformed broadcast signaling for millimeter wave cell discovery performance analysis and design insight"):
  with members:
    - "fast cell discovery in mm wave 5g networks with context information"
    - "design and analysis of initial access in millimeter wave cellular networks"
    - "context information based initial cell search for millimeter wave 5g cellular networks"
    - "comparative analysis of initial access techniques in 5g mmwave cellular networks"
    - "context information for fast cell discovery in mm wave 5g networks"
    - "millimeter wave cellular networks a mac layer perspective"
    - "directional cell discovery in millimeter wave cellular networks"
    - "coverage and rate analysis for millimeter wave cellular networks"

Connected through hyperedge HE-8 (induced by source paper "fast cell discovery in mm wave 5g networks with context information"):
  with members:
    - "adaptive beamwidth selection for contention based access periods in millimeter wave wlans"
    - "spectrum sharing in mmwave cellular networks via cell association coordination and beamforming"
    - "context information based initial cell search for millimeter wave 5g cellular networks"
    - "comparative analysis of initial access techniques in 5g mmwave cellular networks"
    - "beamforming tradeoffs for initial ue discovery in millimeter wave mimo systems"
    - "context information for fast cell discovery in mm wave 5g networks"
    - "millimeter wave cellular networks a mac layer perspective"
    - "directional cell discovery in millimeter wave 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.IT(Information Theory)