human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "four accuracy bounds and one estimator for frequency estimation under local differential privacy"):
  Abstract: We present four lower bounds on the mean squared error of both frequency and distribution estimation under Local Differential Privacy (LDP). Each of these bounds is stated in a different mathematical `language', making them all interesting in their own right. Two are particularly important: First, for a given LDP protocol, we give formulas for the optimal frequency and distribution estimators for the aggregator. This theoretically `solves' the issue of postprocessing, although it may be computationally infeasible in practice. We present methods to approximate the optimal estimator, yielding an estimator that outperforms state of the art methods. Second, we give a lower bound on MSE in terms of the LDP parameter $\varepsilon$, giving a quantitative statement of the privacy-utility tradeoff in LDP. In the high privacy domain, this improves on existing results by giving tighter constants even where earlier results consider a worst-case error metric, or giving constants where up to now, no constants were known.

Includes members:
  Member "information theoretic metrics for local differential privacy protocols":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "the privacy funnel from the viewpoint of local differential privacy")
  Member "consistent and accurate frequency oracles under local differential privacy":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "secure federated submodel learning")
  Member "towards instance optimal private query release":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "a workload adaptive mechanism for linear queries under local differential privacy")
  Member "calibrate frequency estimation and heavy hitter identification with local differential privacy via incorporating prior knowledge":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "defending against machine learning based inference attacks via adversarial examples opportunities and challenges")
  Member "collecting telemetry data privately":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "locally private hypothesis selection")
  Member "rappor randomized aggregatable privacy preserving ordinal response":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "locally private hypothesis selection")
  Member "extremal mechanisms for local differential privacy":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "a workload adaptive mechanism for linear queries under local differential privacy")
  Member "what can we learn privately":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "locally private hypothesis selection")

Question: Please tell me which class the source paper 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.CR(Cryptography and Security)