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: "cooperative regenerating codes"
  Abstract: One of the design objectives in distributed storage system is the minimization of the data traffic during the repair of failed storage nodes. By repairing multiple failures simultaneously and cooperatively, further reduction of repair traffic is made possible. A closed-form expression of the optimal tradeoff between the repair traffic and the amount of storage in each node for cooperative repair is given. We show that the points on the tradeoff curve can be achieved by linear cooperative regenerating codes, with an explicit bound on the required finite field size. The proof relies on a max-flow-min-cut-type theorem for submodular flow from combinatorial optimization. Two families of explicit constructions are given.

Connected through hyperedge HE-1 (induced by source paper "explicit constructions of msr codes for clustered distributed storage the rack aware storage model"):
  with members:
    - "a generic transformation to enable optimal repair in mds codes for distributed storage systems"
    - "the storage versus repair bandwidth trade off for clustered storage systems"
    - "rack aware regenerating codes for data centers"
    - "cooperative repair constructions of optimal mds codes for all admissible parameters"
    - "a class of msr codes for clustered distributed storage"
    - "erasure coding for distributed storage an overview"
    - "optimal repair layering for erasure coded data centers from theory to practice"
    - "increasing availability in distributed storage systems via clustering"

Connected through hyperedge HE-2 (induced by source paper "new constructions of cooperative msr codes reducing node size to exp o n"):
  with members:
    - "cooperative repair constructions of optimal mds codes for all admissible parameters"
    - "on the achievability region of regenerating codes for multiple erasures"
    - "improved schemes for asymptotically optimal repair of mds codes"
    - "optimal repair of reed solomon codes achieving the cut set bound"
    - "optimal repair schemes for some families of full length reed solomon codes"
    - "repairing reed solomon codes with multiple erasures"
    - "an explicit coupled layer construction of a high rate msr code with low sub packetization level small field size and all node repair"
    - "explicit constructions of high rate mds array codes with optimal repair bandwidth"

Connected through hyperedge HE-3 (induced by source paper "on epsilon mscr codes for two erasures"):
  with members:
    - "cooperative repair constructions of optimal mds codes for all admissible parameters"
    - "scalar mscr codes via the product matrix construction"
    - "mds code constructions with small sub packetization and near optimal repair bandwidth"
    - "an explicit coupled layer construction of a high rate msr code with low sub packetization level small field size and all node repair"
    - "explicit constructions of high rate mds array codes with optimal repair bandwidth"
    - "cooperative repair of multiple node failures in distributed storage systems"
    - "explicit constructions of optimal access mds codes with nearly optimal sub packetization"
    - "zigzag codes mds array codes with optimal rebuilding"

Connected through hyperedge HE-4 (induced by source paper "practical functional regenerating codes for broadcast repair of multiple nodes"):
  with members:
    - "functional repair codes a view from projective geometry"
    - "centralized multi node repair regenerating codes"
    - "broadcast repair for wireless distributed storage systems"
    - "centralized repair of multiple node failures with applications to communication efficient secret sharing"
    - "characterizations and construction methods for linear functional repair storage codes"
    - "exact cooperative regenerating codes with minimum repair bandwidth for distributed storage"
    - "repairing multiple failures with coordinated and adaptive regenerating codes"

Connected through hyperedge HE-5 (induced by source paper "erasure codes for distributed storage tight bounds and matching constructions"):
  with members:
    - "explicit msr codes with optimal access optimal sub packetization and small field size for d k 1 k 2 k 3"
    - "a tight rate bound and a matching construction for locally recoverable codes with sequential recovery from any number of multiple erasures"
    - "optimal lrc codes for all lenghts n q"
    - "optimal locally repairable codes of distance 3 and 4 via cyclic codes"
    - "on optimal ternary locally repairable codes"
    - "liquid cloud storage"
    - "rate optimal binary linear locally repairable codes with small availability"
    - "bounds and constructions of codes with all symbol locality and availability"

Connected through hyperedge HE-6 (induced by source paper "the repair problem for reed solomon codes optimal repair of single and multiple erasures asymptotically optimal node size"):
  with members:
    - "optimal repair of reed solomon codes achieving the cut set bound"
    - "efficiently repairing algebraic geometry codes"
    - "mds code constructions with small sub packetization and near optimal repair bandwidth"
    - "a tight lower bound on the sub packetization level of optimal access msr and mds codes"
    - "optimal repair schemes for some families of full length reed solomon codes"
    - "repairing multiple failures for scalar mds codes"
    - "repairing reed solomon codes with multiple erasures"
    - "minimum storage regenerating codes for all parameters"

Connected through hyperedge HE-7 (induced by source paper "cooperative repair constructions of optimal mds codes for all admissible parameters"):
  with members:
    - "on the achievability region of regenerating codes for multiple erasures"
    - "the repair problem for reed solomon codes optimal repair of single and multiple erasures asymptotically optimal node size"
    - "improved schemes for asymptotically optimal repair of mds codes"
    - "optimal repair of reed solomon codes achieving the cut set bound"
    - "repairing reed solomon codes universally achieving the cut set bound for any number of erasures"
    - "optimal repair schemes for some families of full length reed solomon codes"
    - "repairing multiple failures for scalar mds codes"
    - "repairing reed solomon codes with multiple erasures"

Connected through hyperedge HE-8 (induced by source paper "optimal mds codes for cooperative repair"):
  with members:
    - "improved schemes for asymptotically optimal repair of mds codes"
    - "optimal repair of reed solomon codes achieving the cut set bound"
    - "repairing reed solomon codes universally achieving the cut set bound for any number of erasures"
    - "optimal repair schemes for some families of full length reed solomon codes"
    - "repairing multiple failures for scalar mds codes"
    - "repairing reed solomon codes with multiple erasures"
    - "minimum storage regenerating codes for all parameters"
    - "an explicit coupled layer construction of a high rate msr code with low sub packetization level small field size and all node repair"

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)