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: "information security plan for flight simulator applications"
  Abstract: The Department of Defense has a need for an identity management system that uses two factor authentications to ensure that only the correct individuals get access to their top secret flight simulator program. Currently the Department of Defense does not have a web interface sign in system. We will be creating a system that will allow them to access their programs, back office and administrator functions remotely. A security plan outlining our security architecture will be delivered prior to the final code roll out. The plan will include responses to encryption used and the security architecture applied in the final documentation. The code will be delivered in phases to work out any issues that may occur during the implementation.

Connected through hyperedge HE-1 (induced by source paper "complete network security protection for sme s within limited resources"):
  with members:
    - "video surveillance in the cloud"
    - "non profit organizations need to address security for effective government contracting"
    - "information security synthesis in online universities"
    - "cloud computing avoids downfall of application service providers"
    - "security risks in mechanical engineering industries"
    - "it security plan for flight simulation program"
    - "enhancing infrastructure security in real estate"
    - "it security issues within the video game industry"

Connected through hyperedge HE-2 (induced by source paper "healthcare it is your information at risk"):
  with members:
    - "video surveillance in the cloud"
    - "non profit organizations need to address security for effective government contracting"
    - "information security synthesis in online universities"
    - "cloud computing avoids downfall of application service providers"
    - "security risks in mechanical engineering industries"
    - "it security plan for flight simulation program"
    - "enhancing infrastructure security in real estate"
    - "it security issues within the video game industry"

Connected through hyperedge HE-3 (induced by source paper "non profit organizations need to address security for effective government contracting"):
  with members:
    - "information security synthesis in online universities"
    - "cloud computing avoids downfall of application service providers"
    - "security risks in mechanical engineering industries"
    - "it security plan for flight simulation program"
    - "enhancing infrastructure security in real estate"
    - "it security issues within the video game industry"
    - "an overview of the security concerns in enterprise cloud computing"
    - "convergence of corporate and information security"

Connected through hyperedge HE-4 (induced by source paper "video surveillance in the cloud"):
  with members:
    - "information security synthesis in online universities"
    - "cloud computing avoids downfall of application service providers"
    - "security risks in mechanical engineering industries"
    - "it security plan for flight simulation program"
    - "enhancing infrastructure security in real estate"
    - "it security issues within the video game industry"

Connected through hyperedge HE-5 (induced by source paper "it security plan for flight simulation program"):
  with members:
    - "cloud computing avoids downfall of application service providers"
    - "security risks in mechanical engineering industries"
    - "an overview of the security concerns in enterprise cloud computing"
    - "convergence of corporate and information security"

Connected through hyperedge HE-6 (induced by source paper "enhancing infrastructure security in real estate"):
  with members:
    - "cloud computing avoids downfall of application service providers"
    - "security risks in mechanical engineering industries"
    - "an overview of the security concerns in enterprise cloud computing"
    - "convergence of corporate and information security"

Connected through hyperedge HE-7 (induced by source paper "it security issues within the video game industry"):
  with members:
    - "security risks in mechanical engineering industries"

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.CR(Cryptography and Security)