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: "congestion control in computer networks issues and trends"
  Abstract: Myths about congestion control are examined, and an explanation of why the trend toward cheaper memory, higher-speed links, and higher-speed processors has intensified the need to solve the congestion problem is provided. A number of proposed solutions are described, and a classification of congestion problems as well as their solutions is presented. The reasons why the problem is so difficult are identified, and the protocol design decisions that affect the design of a congestion control scheme are discussed. The author's recent proposals, namely, timeout-based congestion control, a DECbit scheme and a delay-based scheme for congestion avoidance are described, and areas for future research are suggested. >

Connected through hyperedge HE-1 (induced by source paper "vdlt a service oriented blockchain system with virtualization and decoupled management control and execution"):
  with members:
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "keeping authorities honest or bust with decentralized witness cosigning"

Connected through hyperedge HE-2 (induced by source paper "congestion control and traffic management in atm networks recent advances and a survey"):
  with members:
    - "congestion avoidance in computer networks with a connectionless network layer"
    - "myths about congestion management in high speed networks"
    - "congestion control with explicit rate indication"
    - "a delay based approach for congestion avoidance in interconnected heterogeneous computer networks"

Connected through hyperedge HE-3 (induced by source paper "a brief overview of atm protocol layers lan emulation and traffic management"):
  with members:
    - "congestion control and traffic management in atm networks recent advances and a survey"
    - "myths about congestion management in high speed networks"
    - "congestion control with explicit rate indication"

Connected through hyperedge HE-4 (induced by source paper "the osu scheme for congestion avoidance in atm networks using explicit rate indication"):
  with members:
    - "congestion control with explicit rate indication"
    - "a timeout based congestion control scheme for window flow controlled 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.NI(Networking and Internet Architecture)