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: "security risks in mechanical engineering industries"
  Abstract: Inherent in any organization are security risks and barriers that must be understood, analyzed, and minimized in order to prepare for and perpetuate future growth and return on investment within the business. Likewise, company leaders must determine the security health of the organization and routinely review the potential threats that are ever changing in this new global economy. Once these risks are outlined, the cost and potential damage must be weighed before action is implemented. This paper will address the modern problems of securing information technology (IT) of a mechanical engineering enterprise, which can be applied to other modern industries .

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"
    - "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"

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"
    - "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"

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"
    - "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"
    - "information security plan for flight simulator applications"
    - "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"
    - "it security plan for flight simulation program"
    - "enhancing infrastructure security in real estate"
    - "it security issues within the video game industry"
    - "information security plan for flight simulator applications"

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"
    - "an overview of the security concerns in enterprise cloud computing"
    - "information security plan for flight simulator applications"
    - "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"
    - "an overview of the security concerns in enterprise cloud computing"
    - "information security plan for flight simulator applications"
    - "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:
    - "information security plan for flight simulator applications"

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)