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: "lifting private information retrieval from two to any number of messages"
  Abstract: We study private information retrieval (PIR) on coded data with possibly colluding servers. Devising PIR schemes with optimal download rate in the case of collusion and coded data is still open in general. We provide a lifting operation that can transform what we call one-shot PIR schemes for two messages into schemes for any number of messages. We apply this lifting operation on existing PIR schemes and describe two immediate implications. First, we obtain novel PIR schemes with improved download rate in the case of MDS coded data and server collusion. Second, we provide a simplified description of existing optimal PIR schemes on replicated data as lifted secret sharing based PIR.

Connected through hyperedge HE-1 (induced by source paper "the capacity of single server weakly private information retrieval"):
  with members:
    - "x secure t private information retrieval from mds coded storage with byzantine and unresponsive servers"
    - "on the information leakage in private information retrieval systems"
    - "weakly private information retrieval"
    - "on the capacity of private information retrieval from coded colluding and adversarial servers"
    - "asymmetry helps improved private information retrieval protocols for distributed storage"
    - "an operational approach to information leakage"
    - "capacity achieving private information retrieval codes with optimal message size and upload cost"
    - "on the access complexity of pir schemes"

Connected through hyperedge HE-2 (induced by source paper "towards the capacity of private information retrieval from coded and colluding servers"):
  with members:
    - "on the capacity of private information retrieval from coded colluding and adversarial servers"
    - "private information retrieval from coded storage systems with colluding byzantine and unresponsive servers"
    - "on the capacity of single server multi message private information retrieval with side information"
    - "capacity of single server single message private information retrieval with coded side information"
    - "the capacity of private information retrieval from byzantine and colluding databases"
    - "private information retrieval from mds coded data with colluding servers settling a conjecture by freij hollanti et al"
    - "secure symmetric private information retrieval from colluding databases with adversaries"
    - "t private information retrieval schemes using transitive codes"

Connected through hyperedge HE-3 (induced by source paper "the capacity of multi round private information retrieval from byzantine databases"):
  with members:
    - "staircase pir universally robust private information retrieval"
    - "robust private information retrieval from coded systems with byzantine and colluding servers"
    - "noisy private information retrieval on separability of channel coding and information retrieval"
    - "asymmetry helps improved private information retrieval protocols for distributed storage"
    - "private information retrieval from a cellular network with caching at the edge"
    - "an mds pir capacity achieving protocol for distributed storage using non mds linear codes"
    - "cross subspace alignment and the asymptotic capacity of x secure t private information retrieval"
    - "capacity achieving private information retrieval codes with optimal message size and upload cost"

Connected through hyperedge HE-4 (induced by source paper "private polynomial computation for noncolluding coded databases"):
  with members:
    - "achievable rate of private function retrieval from mds coded databases"
    - "capacity of private linear computation for coded databases"
    - "lagrange coded computing optimal design for resiliency security and privacy"
    - "private information retrieval from mds coded data in distributed storage systems"
    - "the asymptotic capacity of private search"
    - "private computation of systematically encoded data with colluding servers"
    - "private polynomial computation from lagrange encoding"
    - "private function retrieval"

Connected through hyperedge HE-5 (induced by source paper "the capacity of private information retrieval with private side information under storage constraints"):
  with members:
    - "the capacity of private information retrieval with eavesdroppers"
    - "private information retrieval through wiretap channel ii privacy meets security"
    - "asymmetry hurts private information retrieval under asymmetric traffic constraints"
    - "the asymptotic capacity of private search"
    - "a general private information retrieval scheme for mds coded databases with colluding servers"
    - "multi file private information retrieval from mds coded databases with colluding servers"
    - "the capacity of private information retrieval with partially known private side information"
    - "fundamental limits of cache aided private information retrieval with unknown and uncoded prefetching"

Connected through hyperedge HE-6 (induced by source paper "staircase pir universally robust private information retrieval"):
  with members:
    - "analyzing the download time of availability codes"
    - "robust private information retrieval from coded systems with byzantine and colluding servers"
    - "speeding up distributed machine learning using codes"
    - "polynomially coded regression optimal straggler mitigation via data encoding"
    - "minimizing latency for secure coded computing using secret sharing via staircase codes"
    - "polynomial codes an optimal design for high dimensional coded matrix multiplication"
    - "the capacity of private information retrieval from byzantine and colluding databases"
    - "coded convolution for parallel and distributed computing within a deadline"

Connected through hyperedge HE-7 (induced by source paper "achieving maximum distance separable private information retrieval capacity with linear codes"):
  with members:
    - "private information retrieval from mds coded data in distributed storage systems"
    - "a general private information retrieval scheme for mds coded databases with colluding servers"
    - "optimal repair of reed solomon codes achieving the cut set bound"
    - "private information retrieval from mds coded data with colluding servers settling a conjecture by freij hollanti et al"
    - "t private information retrieval schemes using transitive codes"
    - "linear symmetric private information retrieval for mds coded distributed storage with colluding servers"
    - "private information retrieval in distributed storage systems using an arbitrary linear code"
    - "the capacity of robust private information retrieval with colluding databases"

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)