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 off macrocells and load balancing in heterogeneous cellular networks"
  Abstract: The rate distribution in heterogeneous networks (HetNets) greatly benefits from load balancing, by which mobile users are pushed onto lightly-loaded small cells despite the resulting loss in SINR. This offloading can be made more aggressive and robust if the macrocells leave a fraction of time/frequency resource blank, which reduces the interference to the offloaded users. We investigate the joint optimization of this technique - referred to in 3GPP as enhanced intercell interference coordination (eICIC) via almost blank subframes (ABSs) - with offloading in this paper. Although the joint cell association and blank resource (BR) problem is nominally combinatorial, by allowing users to associate with multiple base stations (BSs), the problem becomes convex, and upper bounds the performance versus a binary association. We show both theoretically and through simulation that the optimal solution of the relaxed problem still results in an association that is mostly binary. The optimal association differs significantly when the macrocell is on or off; in particular the offloading can be much more aggressive when the resource is left blank by macro BSs. Further, we observe that jointly optimizing the offloading with BR is important. The rate gain for cell edge users (the worst 3-10%) is very large - on the order of 5-10x - versus a naive association strategy without macrocell blanking.

Connected through hyperedge HE-1 (induced by source paper "treating interference as noise in cellular networks a stochastic geometry approach"):
  with members:
    - "system level modeling and optimization of the energy efficiency in cellular networks a stochastic geometry framework"
    - "downlink and uplink decoupling in two tier heterogeneous networks with multi antenna base stations"
    - "backscatter communications for the internet of things a stochastic geometry approach"
    - "enhanced cellular coverage and throughput using rateless codes"
    - "analytical modeling of interference aware power control for the uplink of heterogeneous cellular networks"
    - "stochastic geometry modeling and analysis of multi tier millimeter wave cellular networks"
    - "optimality of treating interference as noise a combinatorial perspective"
    - "coverage and rate analysis for millimeter wave cellular networks"

Connected through hyperedge HE-2 (induced by source paper "analytical derivation of downlink data rate distribution for 5g hetnets with cell edge located small cells"):
  with members:
    - "asymptotic deployment gain a simple approach to characterize the sinr distribution in general cellular networks"
    - "capacity analysis of lte advanced hetnets with reduced power subframes and range expansion"
    - "what will 5g be"
    - "emerging technologies and research challenges for 5g wireless networks"
    - "five disruptive technology directions for 5g"
    - "modeling heterogeneous network interference using poisson point processes"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-3 (induced by source paper "resource allocation in dynamic tdd heterogeneous networks under mixed traffic"):
  with members:
    - "d2d enhanced heterogeneous cellular networks with dynamic tdd"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"

Connected through hyperedge HE-4 (induced by source paper "user association and interference management in massive mimo hetnets"):
  with members:
    - "performance analysis of massive mimo for cell boundary users"
    - "harmonized cellular and distributed massive mimo load balancing and scheduling"
    - "algorithms for enhanced inter cell interference coordination eicic in lte hetnets"
    - "an overview of load balancing in hetnets old myths and open problems"
    - "optimal user cell association for massive mimo wireless networks"
    - "massive mimo for next generation wireless systems"
    - "what will 5g be"
    - "evolution toward 5g multi tier cellular wireless networks an interference management perspective"

Connected through hyperedge HE-5 (induced by source paper "harmonized cellular and distributed massive mimo load balancing and scheduling"):
  with members:
    - "performance analysis of massive mimo for cell boundary users"
    - "an overview of load balancing in hetnets old myths and open problems"
    - "optimal user cell association for massive mimo wireless networks"
    - "massive mimo for next generation wireless systems"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "network mimo with linear zero forcing beamforming large system analysis impact of channel estimation and reduced complexity scheduling"
    - "user association for load balancing in heterogeneous cellular networks"
    - "mimo downlink scheduling with non perfect channel state knowledge"

Connected through hyperedge HE-6 (induced by source paper "what will 5g be"):
  with members:
    - "algorithms for enhanced inter cell interference coordination eicic in lte hetnets"
    - "massive mimo multicasting in noncooperative cellular networks"
    - "an overview of load balancing in hetnets old myths and open problems"
    - "distributed pricing based user association for downlink heterogeneous cellular networks"
    - "channel estimation and hybrid precoding for millimeter wave cellular systems"
    - "energy efficient scheduling and power allocation in downlink ofdma networks with base station coordination"
    - "optimized backhaul compression for uplink cloud radio access network"
    - "bargaining based mobile data offloading"

Connected through hyperedge HE-7 (induced by source paper "optimal joint user association and resource allocation in heterogeneous networks via sparsity pursuit"):
  with members:
    - "joint downlink base station association and power control for max min fairness computation and complexity"
    - "traffic driven spectrum allocation in heterogeneous networks"
    - "algorithms for enhanced inter cell interference coordination eicic in lte hetnets"
    - "an overview of load balancing in hetnets old myths and open problems"
    - "distributed pricing based user association for downlink heterogeneous cellular networks"
    - "joint user association and reuse pattern selection in heterogeneous networks"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "user association for load balancing in heterogeneous cellular networks"

Connected through hyperedge HE-8 (induced by source paper "unified and distributed qos driven cell association algorithms in heterogeneous networks"):
  with members:
    - "joint resource partitioning and offloading in heterogeneous cellular networks"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "load aware modeling and analysis of heterogeneous cellular networks"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "user association for load balancing in heterogeneous cellular networks"
    - "green cellular networks a survey some research issues and challenges"
    - "a hybrid decision approach for the association problem in heterogeneous 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)