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: "a utility proportional fairness radio resource block allocation in cellular networks"
  Abstract: This paper presents a radio resource block allocation optimization problem for cellular communications systems with users running delay-tolerant and real-time applications, generating elastic and inelastic traffic on the network and being modelled as logarithmic and sigmoidal utilities respectively. The optimization is cast under a utility proportional fairness framework aiming at maximizing the cellular systems utility whilst allocating users the resource blocks with an eye on application quality of service requirements and on the procedural temporal and computational efficiency. Ultimately, the sensitivity of the proposed modus operandi to the resource variations is investigated.

Connected through hyperedge HE-1 (induced by source paper "resource allocation in cellular systems for applications with random parameters"):
  with members:
    - "optimal context aware resource allocation in cellular networks"
    - "an optimal resource allocation with joint carrier aggregation in 4g lte"
    - "multi application resource allocation with users discrimination in cellular networks"
    - "rate adaptation and admission control for video transmission with subjective quality constraints"

Connected through hyperedge HE-2 (induced by source paper "an efficient multi carrier resource allocation with user discrimination framework for 5g wireless systems"):
  with members:
    - "a price selective centralized algorithm for resource allocation with carrier aggregation in lte cellular networks"
    - "robust resource allocation with joint carrier aggregation for multi carrier cellular networks"
    - "an optimal application aware resource block scheduling in lte"
    - "multi application resource allocation with users discrimination in cellular networks"

Connected through hyperedge HE-3 (induced by source paper "robust resource allocation with joint carrier aggregation for multi carrier cellular networks"):
  with members:
    - "an optimal resource allocation with joint carrier aggregation in 4g lte"
    - "a price selective centralized algorithm for resource allocation with carrier aggregation in lte cellular networks"
    - "an optimal application aware resource block scheduling in lte"

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)