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 "some bounds of separating hash families"):
  Abstract: Separating hash families were first introduced by Stinson, Trung and Wei. #R##N#In this paper, we present some new bounds of SHF with small parameter. By the small parameter, we improve previously known bound of types $\{w,w\}$ and $\{w_1,w_2\}$. we also give a construction for strong separating hash family.

Includes members:
  Member "separating hash families a johnson type bound and new constructions":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "bounds on traceability schemes")
  Member "a tight bound on the size of certain separating hash families":
    also connected through other hyperedges:
      (none)
  Member "on tight bounds for binary frameproof codes":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "new results for traitor tracing schemes")
  Member "new bounds for frameproof codes":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "on capacities of the two user union channel with complete feedback")

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.IT(Information Theory)