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 combinatorial model of interference in frequency hopping schemes"
  Abstract: In a frequency hopping multiple access (FHMA) system a set of users communicate simultaneously using frequency hopping sequences defined on the same set of frequency channels. A frequency hopping sequence specifies which channels to use as communication progresses. A set of frequency hopping sequences used in an FHMA is called a frequency hopping scheme (FHS). Much of the research on the performance of FHS is based on either pairwise mutual interference or adversarial interference but not both. In this paper, we evaluate the performance of an FHS with respect to both group-wise mutual interference and adversarial interference (jamming), bearing in mind that more than two users may be transmitting simultaneously in the presence of an adversary. We point out a correspondence between a cover-free code and a frequency hopping scheme. Cover-free codes give a lower bound on the transmission capacity of the FHS. Furthermore, we specify a jammer model and consider what additional properties a cover-free code should have to resist the jammer. We show that a purely combinatorial approach is inadequate against such a jammer, but that with the use of pseudorandomness, we can have a system that has high throughput as well as secure against jamming.

Connected through hyperedge HE-1 (induced by source paper "disjoint difference families and their applications"):
  with members:
    - "non overlapping codes"
    - "new families of optimal frequency hopping sequence sets"
    - "high rate self synchronizing codes"
    - "information theoretic authentication and secrecy codes in the splitting model"
    - "combinatorial bounds and characterizations of splitting authentication codes"
    - "strong secrecy and reliable byzantine detection in the presence of an untrusted relay"
    - "optimal rate code constructions for computationally simple channels"
    - "authentication and secrecy codes for equiprobable source probability distributions"

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)