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: "distributed storage codes with repair by transfer and nonachievability of interior points on the storage bandwidth tradeoff"
  Abstract: Regenerating codes are a class of recently developed codes for distributed storage that, like Reed-Solomon codes, permit data recovery from any subset of nodes within the -node network. However, regenerating codes possess in addition, the ability to repair a failed node by connecting to an arbitrary subset of nodes. It has been shown that for the case of functional repair, there is a tradeoff between the amount of data stored per node and the bandwidth required to repair a failed node. A special case of functional repair is exact repair where the replacement node is required to store data identical to that in the failed node. Exact repair is of interest as it greatly simplifies system implementation. The first result of this paper is an explicit, exact-repair code for the point on the storage-bandwidth tradeoff corresponding to the minimum possible repair bandwidth, for the case when . This code has a particularly simple graphical description, and most interestingly has the ability to carry out exact repair without any need to perform arithmetic operations. We term this ability of the code to perform repair through mere transfer of data as repair by transfer. The second result of this paper shows that the interior points on the storage-bandwidth tradeoff cannot be achieved under exact repair, thus pointing to the existence of a separate tradeoff under exact repair. Specifically, we identify a set of scenarios which we term as “helper node pooling,” and show that it is the necessity to satisfy such scenarios that overconstrains the system.

Connected through hyperedge HE-1 (induced by source paper "enabling optimal access and error correction for the repair of reed solomon codes"):
  with members:
    - "explicit constructions of msr codes for clustered distributed storage the rack aware storage model"
    - "optimal repairing schemes for reed solomon codes with alphabet sizes linear in lengths under the rack aware model"
    - "on the i o costs of some repair schemes for full length reed solomon codes"
    - "the repair problem for reed solomon codes optimal repair of single and multiple erasures asymptotically optimal node size"
    - "a tight lower bound on the sub packetization level of optimal access msr and mds codes"
    - "repairing reed solomon codes with multiple erasures"
    - "minimum storage regenerating codes for all parameters"
    - "explicit constructions of high rate mds array codes with optimal repair bandwidth"

Connected through hyperedge HE-2 (induced by source paper "cascade codes for distributed storage systems"):
  with members:
    - "a generic transformation to enable optimal repair in mds codes for distributed storage systems"
    - "determinant codes with helper independent repair for single and multiple failures"
    - "a class of msr codes for clustered distributed storage"
    - "product matrix msr codes with bandwidth adaptive exact repair"
    - "bandwidth adaptive error resilient mbr exact repair regenerating codes"
    - "a tight lower bound on the sub packetization level of optimal access msr and mds codes"
    - "capacity of clustered distributed storage"
    - "progress on high rate msr codes enabling arbitrary number of helper nodes"

Connected through hyperedge HE-3 (induced by source paper "a systematic construction of mds codes with small sub packetization level and near optimal repair bandwidth"):
  with members:
    - "a generic transformation to enable optimal repair in mds codes for distributed storage systems"
    - "minimum storage regenerating codes for all parameters"
    - "explicit constructions of high rate mds array codes with optimal repair bandwidth"
    - "explicit constructions of optimal access mds codes with nearly optimal sub packetization"
    - "optimal exact repair strategy for the parity nodes of the k 2 k zigzag code"
    - "a framework of constructions of minimal storage regenerating codes with the optimal access update property"
    - "zigzag codes mds array codes with optimal rebuilding"
    - "an improved sub packetization bound for minimum storage regenerating codes"

Connected through hyperedge HE-4 (induced by source paper "multi layer transformed mds codes with optimal repair access and low sub packetization"):
  with members:
    - "a unified form of evenodd and rdp codes and their efficient decoding"
    - "a generic transformation to enable optimal repair in mds codes for distributed storage systems"
    - "binary mds array codes with optimal repair"
    - "a tight lower bound on the sub packetization level of optimal access msr and mds codes"
    - "minimum storage regenerating codes for all parameters"
    - "explicit constructions of high rate mds array codes with optimal repair bandwidth"
    - "explicit constructions of optimal access mds codes with nearly optimal sub packetization"
    - "repair optimal mds array codes over gf 2"

Connected through hyperedge HE-5 (induced by source paper "achieving secrecy capacity of minimum storage regenerating codes for all feasible n k d parameter values"):
  with members:
    - "minimum storage regenerating codes for all parameters"
    - "explicit constructions of high rate mds array codes with optimal repair bandwidth"
    - "on secrecy capacity of minimum storage regenerating codes"
    - "optimal locally repairable and secure codes for distributed storage systems"
    - "data secrecy in distributed storage systems under exact repair"
    - "optimal exact regenerating codes for distributed storage at the msr and mbr points via a product matrix construction"
    - "information theoretically secure regenerating codes for distributed storage"
    - "on secure distributed data storage under repair dynamics"

Connected through hyperedge HE-6 (induced by source paper "optimal fraction repetition codes for access balancing in distributed storage"):
  with members:
    - "access balancing in storage systems by labeling partial steiner systems"
    - "optimal fractional repetition codes based on graphs and designs"
    - "fractional repetition codes with flexible repair from combinatorial designs"
    - "repairable replication based storage systems using resolvable designs"
    - "fractional repetition codes for repair in distributed storage systems"
    - "explicit construction of optimal exact regenerating codes for distributed storage"

Connected through hyperedge HE-7 (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-8 (induced by source paper "explicit construction of mbr codes for clustered distributed storage"):
  with members:
    - "explicit constructions of msr codes for clustered distributed storage the rack aware storage model"
    - "the storage versus repair bandwidth trade off for clustered storage systems"
    - "a class of msr codes for clustered distributed storage"
    - "secure clustered distributed storage against eavesdroppers"
    - "optimal repair layering for erasure coded data centers from theory to practice"
    - "increasing availability in distributed storage systems via clustering"
    - "locality and availability of array codes constructed from subspaces"
    - "capacity of clustered distributed storage"

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)