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 piggybacking design framework for read and download efficient distributed storage codes"
  Abstract: We present a new 'piggybacking' framework for designing distributed storage codes that are efficient in data-read and download required during node-repair. We illustrate the power of this framework by constructing classes of explicit codes that entail the smallest data-read and download for repair among all existing solutions for three important settings: (a) codes meeting the constraints of being Maximum-Distance-Separable (MDS), high-rate and having a small number of substripes, arising out of practical considerations for implementation in data centers, (b) binary MDS codes for all parameters where binary MDS codes exist, (c) MDS codes with the smallest repair-locality. In addition, we employ this framework to enable efficient repair of parity nodes in existing codes that were originally constructed to address the repair of only the systematic nodes. The basic idea behind our framework is to take multiple instances of existing codes and add carefully designed functions of the data of one instance to the other. Typical savings in data-read during repair is 25% to 50% depending on the choice of the code parameters.

Connected through hyperedge HE-1 (induced by source paper "towards practical private information retrieval from mds array codes"):
  with members:
    - "a new capacity achieving private information retrieval scheme with almost optimal file length for coded servers"
    - "on the pir capacity of msr codes"
    - "breaking the mds pir capacity barrier via joint storage coding"
    - "a generic transformation to enable optimal repair in mds codes for distributed storage systems"
    - "capacity achieving private information retrieval codes with optimal message size and upload cost"
    - "private information retrieval from mds coded data in distributed storage systems"
    - "on sub packetization and access number of capacity achieving pir schemes for mds coded non colluding servers"
    - "private information retrieval schemes with regenerating codes"

Connected through hyperedge HE-2 (induced by source paper "coded data rebalancing fundamental limits and constructions"):
  with members:
    - "speeding up distributed machine learning using codes"
    - "a fundamental tradeoff between computation and communication in distributed computing"
    - "fundamental limits of caching"

Connected through hyperedge HE-3 (induced by source paper "convertible codes efficient conversion of coded data in distributed storage"):
  with members:
    - "an exponential lower bound on the sub packetization of msr codes"
    - "combinatorial alphabet dependent bounds for locally recoverable codes"
    - "capacity of locally recoverable codes"
    - "a layered architecture for erasure coded consistent distributed storage"
    - "product matrix msr codes with bandwidth adaptive exact repair"
    - "bandwidth adaptive error resilient mbr exact repair regenerating codes"
    - "the storage vs repair bandwidth trade off for multiple failures in clustered storage networks"
    - "locally recoverable codes from algebraic curves and surfaces"

Connected through hyperedge HE-4 (induced by source paper "a generic transformation to enable optimal repair in mds codes for distributed storage systems"):
  with members:
    - "a tight lower bound on the sub packetization level of optimal access msr and mds codes"
    - "minimum storage regenerating codes for all parameters"
    - "enabling all node repair in minimum storage regenerating codes"
    - "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"
    - "explicit constructions of optimal access mds codes with nearly optimal sub packetization"
    - "a high rate msr code with polynomial sub packetization level"
    - "optimal exact repair strategy for the parity nodes of the k 2 k zigzag code"

Connected through hyperedge HE-5 (induced by source paper "code constructions for distributed storage with low repair bandwidth and low repair complexity"):
  with members:
    - "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 optimal access mds codes with nearly optimal sub packetization"
    - "a family of erasure correcting codes with low repair bandwidth and low repair complexity"
    - "a framework of constructions of minimal storage regenerating codes with the optimal access update property"
    - "an alternate construction of an access optimal regenerating code with optimal sub packetization level"
    - "mdr codes a new class of raid 6 codes with optimal rebuilding and encoding"
    - "xoring elephants novel erasure codes for big data"

Connected through hyperedge HE-6 (induced by source paper "a new design of binary mds array codes with asymptotically weak optimal repair"):
  with members:
    - "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"
    - "explicit constructions of high rate mds array codes with optimal repair bandwidth"
    - "explicit constructions of optimal access mds codes with nearly optimal sub packetization"
    - "a framework of constructions of minimal storage regenerating codes with the optimal access update property"
    - "mdr codes a new class of raid 6 codes with optimal rebuilding and encoding"
    - "repair optimal mds array codes over gf 2"
    - "zigzag codes mds array codes with optimal rebuilding"

Connected through hyperedge HE-7 (induced by source paper "an explicit construction of systematic mds codes with small sub packetization for all node repair"):
  with members:
    - "general sub packetized access optimal regenerating codes"
    - "hashtag erasure codes from theory to practice"

Connected through hyperedge HE-8 (induced by source paper "improved schemes for asymptotically optimal repair of mds codes"):
  with members:
    - "optimal repair of reed solomon codes achieving the cut set bound"
    - "repairing reed solomon codes with two erasures"
    - "optimal repair schemes for some families of full length reed solomon codes"
    - "repairing multiple failures for scalar mds codes"
    - "progress on high rate msr codes enabling arbitrary number of helper nodes"
    - "repairing reed solomon codes with multiple erasures"
    - "minimum storage regenerating codes for all parameters"
    - "general sub packetized access optimal regenerating codes"

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)