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: "mechanism design for base station association and resource allocation in downlink ofdma network"
  Abstract: We consider a resource management problem in a multi-cell downlink OFDMA network, whereby the goal is to find the optimal per base station resource allocation and user-base station assignment. The users are assumed to be strategic/selfish who have private information on downlink channel states and noise levels. To induce truthfulness among the users as well as to enhance the spectrum efficiency, the resource management strategy needs to be both incentive compatible and efficient. However, due to the mixed (discrete and continuous) nature of resource management in this context, the implementation of any incentive compatible mechanism that maximizes the system throughput is NP-hard. We consider the dominant strategy implementation of an approximately optimal resource management scheme via a computationally tractable mechanism. The proposed mechanism is decentralized and dynamic. More importantly, it ensures the truthfulness of the users and it implements a resource allocation solution that yields at least 1/2 of the optimal throughput. Simulations are provided to illustrate the effectiveness of the performance of the proposed mechanism.

Connected through hyperedge HE-1 (induced by source paper "robust radio resource allocation in miso scma assisted c ran in 5g networks"):
  with members:
    - "a survey on non orthogonal multiple access for 5g networks research challenges and future trends"
    - "iterative receivers for downlink mimo scma message passing and distributed cooperative detection"
    - "a minorization maximization method for optimizing sum rate in the downlink of non orthogonal multiple access systems"
    - "scma for downlink multiple access of 5g wireless networks"
    - "robust monotonic optimization framework for multicell miso systems"

Connected through hyperedge HE-2 (induced by source paper "load optimization with user association in cooperative and load coupled lte networks"):
  with members:
    - "load balancing via joint transmission in heterogeneous lte modeling and computation"
    - "joint downlink base station association and power control for max min fairness computation and complexity"
    - "a stochastic geometry framework for analyzing pairwise cooperative cellular networks"
    - "optimal user association for massive mimo empowered ultra dense wireless networks"
    - "a tractable model for noncoherent joint transmission base station cooperation"
    - "what will 5g be"
    - "on association cells in random heterogeneous networks"
    - "analysis of cell load coupling for lte network planning and optimization"

Connected through hyperedge HE-3 (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"
    - "modeling analysis and design for carrier aggregation in heterogeneous cellular 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"

Connected through hyperedge HE-4 (induced by source paper "distributed discovery clients for spectrum allocation"):
  with members:
    - "large scale distributed internet based discovery mechanism for dynamic spectrum allocation"
    - "a potential game for power and frequency allocation in large scale wireless networks"

Connected through hyperedge HE-5 (induced by source paper "distributed pricing based user association for downlink heterogeneous cellular networks"):
  with members:
    - "joint interference and user association optimization in cellular wireless networks"
    - "user association for load balancing in heterogeneous cellular networks"

Connected through hyperedge HE-6 (induced by source paper "structured spectrum allocation and user association in heterogeneous cellular networks"):
  with members:
    - "joint resource partitioning and offloading in heterogeneous cellular networks"
    - "understanding the benefits of open access in femtocell networks stochastic geometric analysis in the uplink"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "open closed and shared access femtocells in the downlink"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "user association for load balancing in heterogeneous cellular networks"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-7 (induced by source paper "joint access point selection and power allocation for uplink wireless networks"):
  with members:
    - "signal processing and optimal resource allocation for the interference channel"
    - "averaged iterative water filling algorithm robustness and convergence"
    - "dynamic power allocation games in parallel multiple access channels"
    - "game theory and the frequency selective interference channel"
    - "optimal linear precoding strategies for wideband noncooperative systems based on game theory part i nash equilibria"
    - "optimal linear precoding strategies for wideband non cooperative systems based on game theory part ii algorithms"

Connected through hyperedge HE-8 (induced by source paper "epidemic like proximity based traffic offloading"):
  with members:
    - "non cooperative game for capacity offload"
    - "greedy gossip with eavesdropping"
    - "the impact of mobility on gossip algorithms"
    - "femtocell networks a survey"

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)