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 new method to compute the 2 adic complexity of binary sequences"
  Abstract: In this paper, a new method is presented to compute the 2-adic complexity of pseudo-random sequences. With this method, the 2-adic complexities of all the known sequences with ideal 2-level autocorrelation are uniformly determined. Results show that their 2-adic complexities equal their periods. In other words, their 2-adic complexities attain the maximum. Moreover, 2-adic complexities of two classes of optimal autocorrelation sequences with period $N\equiv1\mod4$, namely Legendre sequences and Ding-Helleseth-Lam sequences, are investigated. Besides, this method also can be used to compute the linear complexity of binary sequences regarded as sequences over other finite fields.

Connected through hyperedge HE-1 (induced by source paper "the 2 adic complexity of yu gong sequences with interleaved structure and optimal autocorrelation magnitude"):
  with members:
    - "on the 2 adic complexity of a class of binary sequences of period 4p with optimal autocorrelation magnitude"
    - "new optimal binary sequences with period 4p via interleaving ding helleseth lam sequences"
    - "the linear complexity of a class of binary sequences with optimal autocorrelation"
    - "comments on a new method to compute the 2 adic complexity of binary sequences"

Connected through hyperedge HE-2 (induced by source paper "autocorrelation and lower bound on the 2 adic complexity of lsb sequence of p ary m sequence"):
  with members:
    - "comments on a new method to compute the 2 adic complexity of binary sequences"

Connected through hyperedge HE-3 (induced by source paper "a lower bound on the 2 adic complexity of modified jacobi sequence"):
  with members:
    - "cyclotomic constructions of cyclic codes with length being the product of two primes"

Connected through hyperedge HE-4 (induced by source paper "the 2 adic complexity of a class of binary sequences with almost optimal autocorrelation"):
  with members:
    - "comments on a new method to compute the 2 adic complexity of binary sequences"

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.CR(Cryptography and Security)