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: "explicit optimal length locally repairable codes of distance 5"
  Abstract: Locally repairable codes (LRCs) have received significant recent attention as a method of designing data storage systems robust to server failure. Optimal LRCs offer the ideal trade-off between minimum distance and locality, a measure of the cost of repairing a single codeword symbol. For optimal LRCs with minimum distance greater than or equal to 5, block length is bounded by a polynomial function of alphabet size. In this paper, we give explicit constructions of optimal-length (in terms of alphabet size), optimal LRCs with minimum distance equal to 5.

Connected through hyperedge HE-1 (induced by source paper "on optimal locally repairable codes and generalized sector disk codes"):
  with members:
    - "array codes with local properties"
    - "universal and dynamic locally repairable codes with maximal recoverability via sum rank codes"
    - "how long can optimal locally repairable codes be"
    - "explicit construction of optimal locally recoverable codes of distance 5 and 6 via binary constant weight codes"
    - "on optimal locally repairable codes with super linear length"
    - "locality and availability of array codes constructed from subspaces"
    - "optimal locally repairable codes via elliptic curves"
    - "bounds and constructions of codes with multiple localities"

Connected through hyperedge HE-2 (induced by source paper "on optimal locally repairable codes with super linear length"):
  with members:
    - "combinatorial alphabet dependent bounds for locally recoverable codes"
    - "how long can optimal locally repairable codes be"
    - "explicit construction of optimal locally recoverable codes of distance 5 and 6 via binary constant weight codes"
    - "optimal lrc codes for all lenghts n q"
    - "optimal locally repairable codes of distance 3 and 4 via cyclic codes"
    - "irregular recovery and unequal locality for locally recoverable codes with availability"
    - "locality and availability of array codes constructed from subspaces"
    - "optimal locally repairable systematic codes based on packings"

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)