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: "modeling analysis and design for carrier aggregation in heterogeneous cellular networks"
  Abstract: Carrier aggregation (CA) and small cells are two distinct features of next-generation cellular networks. Cellular networks with different types of small cells are often referred to as HetNets. In this paper, we introduce a load-aware model for CA-enabled multi-band HetNets. Under this model, the impact of biasing can be more appropriately characterized; for example, it is observed that with large enough biasing, the spectral efficiency of small cells may increase while its counterpart in a fully-loaded model always decreases. Further, our analysis reveals that the peak data rate does not depend on the base station density and transmit powers; this strongly motivates other approaches e.g. CA to increase the peak data rate. Last but not least, different band deployment configurations are studied and compared. We find that with large enough small cell density, spatial reuse with small cells outperforms adding more spectrum for increasing user rate. More generally, universal cochannel deployment typically yields the largest rate; and thus a capacity loss exists in orthogonal deployment. This performance gap can be reduced by appropriately tuning the HetNet coverage distribution (e.g. by optimizing biasing factors).

Connected through hyperedge HE-1 (induced by source paper "capacity and delay tradeoff of secondary cellular networks with spectrum aggregation"):
  with members:
    - "greendelivery proactive content caching and push with energy harvesting based small cells"
    - "performance laws of large heterogeneous cellular networks"
    - "the ginibre point process as a model for wireless networks with repulsion"
    - "a stochastic geometry analysis of inter cell interference coordination and intra cell diversity"
    - "fundamentals of heterogeneous cellular networks with energy harvesting"
    - "average rate of downlink heterogeneous cellular networks over generalized fading channels a stochastic geometry approach"
    - "downlink multi antenna heterogeneous cellular network with load balancing"
    - "analysis of cell load coupling for lte network planning and optimization"

Connected through hyperedge HE-2 (induced by source paper "stochastic geometric analysis of energy efficient dense cellular networks"):
  with members:
    - "the intensity matching approach a tractable stochastic geometry approximation to system level analysis of cellular networks"
    - "spatial spectrum and energy efficiency of random cellular networks"
    - "average rate of downlink heterogeneous cellular networks over generalized fading channels a stochastic geometry approach"
    - "downlink rate distribution in heterogeneous cellular networks under generalized cell selection"
    - "load aware modeling and analysis of heterogeneous cellular networks"
    - "user association for load balancing in heterogeneous cellular networks"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "series expansion for interference in wireless networks"

Connected through hyperedge HE-3 (induced by source paper "modeling and analyzing the coexistence of wi fi and lte in unlicensed spectrum"):
  with members:
    - "coordinated dynamic spectrum management of lte u and wi fi networks"
    - "asymptotic deployment gain a simple approach to characterize the sinr distribution in general cellular networks"
    - "statistical modeling and probabilistic analysis of cellular networks with determinantal point processes"
    - "downlink mimo hetnets modeling ordering results and performance analysis"
    - "load aware modeling and analysis of heterogeneous cellular networks"
    - "modeling heterogeneous network interference using poisson point processes"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-4 (induced by source paper "optimizing user association and spectrum allocation in hetnets a utility perspective"):
  with members:
    - "on stochastic geometry modeling of cellular uplink transmission with truncated channel inversion power control"
    - "distributed pricing based user association for downlink heterogeneous cellular networks"
    - "tier association probability and spectrum partitioning for maximum rate coverage in multi tier heterogeneous networks"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "analysis of a proportionally fair and locally adaptive spatial aloha in poisson networks"
    - "joint access point selection and power allocation for uplink wireless networks"
    - "downlink mimo hetnets modeling ordering results and performance analysis"
    - "joint resource partitioning and offloading in heterogeneous cellular networks"

Connected through hyperedge HE-5 (induced by source paper "learning based frequency and time domain inter cell interference coordination in hetnets"):
  with members:
    - "capacity analysis of lte advanced hetnets with reduced power subframes and range expansion"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "enhanced intercell interference coordination challenges in heterogeneous networks"

Connected through hyperedge HE-6 (induced by source paper "distributed virtual resource allocation in small cell networks with full duplex self backhauls and virtualization"):
  with members:
    - "millimeter wave beamforming for wireless backhaul and access in small cell networks"
    - "in band full duplex wireless challenges and opportunities"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "user association for load balancing in heterogeneous cellular networks"

Connected through hyperedge HE-7 (induced by source paper "analysis of heterogeneous cellular networks under frequency diversity and interference correlation"):
  with members:
    - "what will 5g be"
    - "offloading in heterogeneous networks modeling analysis and design insights"

Connected through hyperedge HE-8 (induced by source paper "spectrum sharing for device to device communication in cellular networks"):
  with members:
    - "modeling analysis and optimization of multicast device to device transmissions"
    - "resource optimization in device to device cellular systems using time frequency hopping"
    - "spectrum sharing scheme between cellular users and ad hoc device to device users"
    - "an overview on 3gpp device to device proximity services"
    - "analytical modeling of uplink cellular networks"
    - "towards understanding the fundamentals of mobility in cellular networks"
    - "transmission capacity of wireless networks"
    - "a tractable approach to coverage and rate in 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)