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: "optimal repair layering for erasure coded data centers from theory to practice"
  Abstract: Repair performance in hierarchical data centers is often bottlenecked by cross-rack network transfer. Recent theoretical results show that the cross-rack repair traffic can be minimized through repair layering, whose idea is to partition a repair operation into inner-rack and cross-rack layers. However, how repair layering should be implemented and deployed in practice remains an open issue. In this paper, we address this issue by proposing a practical repair layering framework called DoubleR. We design two families of practical double regenerating codes (DRC), which not only minimize the cross-rack repair traffic, but also have several practical properties that improve state-of-the-art regenerating codes. We implement and deploy DoubleR atop Hadoop Distributed File System (HDFS), and show that DoubleR maintains the theoretical guarantees of DRC and improves the repair performance of regenerating codes in both node recovery and degraded read operations.

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"
    - "increasing availability in distributed storage systems via clustering"
    - "a tight lower bound on the sub packetization level of optimal access msr and mds codes"

Connected through hyperedge HE-2 (induced by source paper "capacity of distributed storage systems with clusters and separate nodes"):
  with members:
    - "storage and repair bandwidth tradeoff for distributed storage systems with clusters and separate nodes"
    - "the storage versus repair bandwidth trade off for clustered storage systems"
    - "rack aware regenerating codes for data centers"
    - "video streaming in distributed erasure coded storage systems stall duration analysis"
    - "the storage vs repair bandwidth trade off for multiple failures in clustered storage networks"
    - "capacity of clustered distributed storage"
    - "joint latency and cost optimization for erasure coded data center storage"
    - "sprout a functional caching approach to minimize service latency in erasure coded storage"

Connected through hyperedge HE-3 (induced by source paper "optimal repairing schemes for reed solomon codes with alphabet sizes linear in lengths under the rack aware model"):
  with members:
    - "explicit constructions of msr codes for clustered distributed storage the rack aware storage model"
    - "on two to one mappings over finite fields"
    - "constructions of locally recoverable codes which are optimal"
    - "rack aware regenerating codes for data centers"
    - "repairing reed solomon codes"
    - "a family of optimal locally recoverable codes"
    - "a repair framework for scalar mds codes"
    - "a survey on network codes for distributed storage"

Connected through hyperedge HE-4 (induced by source paper "repair pipelining for erasure coded storage algorithms and evaluation"):
  with members:
    - "the storage versus repair bandwidth trade off for clustered storage systems"
    - "rack aware regenerating codes for data centers"
    - "xoring elephants novel erasure codes for big data"
    - "a solution to the network challenges of data recovery in erasure coded distributed storage systems a study on the facebook warehouse cluster"

Connected through hyperedge HE-5 (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"
    - "increasing availability in distributed storage systems via clustering"
    - "locality and availability of array codes constructed from subspaces"
    - "capacity of clustered distributed storage"
    - "minimum storage regenerating codes for all parameters"

Connected through hyperedge HE-6 (induced by source paper "explicit constructions of mbr and msr 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"
    - "increasing availability in distributed storage systems via clustering"
    - "locality and availability of array codes constructed from subspaces"
    - "capacity of clustered distributed storage"
    - "minimum storage regenerating codes for all parameters"

Connected through hyperedge HE-7 (induced by source paper "the storage versus repair bandwidth trade off for clustered storage systems"):
  with members:
    - "capacity of clustered distributed storage"
    - "a note on secure minimum storage regenerating codes"
    - "architecture aware coding for distributed storage repairable block failure resilient codes"
    - "non homogeneous two rack model for distributed storage systems"
    - "capacity and security of heterogeneous distributed storage systems"
    - "a realistic distributed storage system the rack model"
    - "distributed storage codes with repair by transfer and nonachievability of interior points on the storage bandwidth tradeoff"
    - "on the locality of codeword symbols"

Connected through hyperedge HE-8 (induced by source paper "rack aware regenerating codes for data centers"):
  with members:
    - "explicit construction of mbr codes for clustered distributed storage"
    - "the storage versus repair bandwidth trade off for clustered storage systems"
    - "a class of msr codes for clustered distributed storage"
    - "capacity of clustered distributed storage"
    - "minimum storage regenerating codes for all parameters"
    - "xoring elephants novel erasure codes for big data"
    - "a realistic distributed storage system that minimizes data storage and repair bandwidth"
    - "capacity and security of heterogeneous distributed storage systems"

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.DC(Distributed, Parallel, and Cluster Computing)