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: "sharing computer network logs for security and privacy a motivation for new methodologies of anonymization"
  Abstract: Logs are one of the most fundamental resources to any security professional. It is widely recognized by the government and industry that it is both beneficial and desirable to share logs for the purpose of security research. However, the sharing is not happening or not to the degree or magnitude that is desired. Organizations are reluctant to share logs because of the risk of exposing sensitive information to potential attackers. We believe this reluctance remains high because current anonymization techniques are weak and one-size-fits-all--or better put, one size tries to fit all. We must develop standards and make anonymization available at varying levels, striking a balance between privacy and utility. Organizations have different needs and trust other organizations to different degrees. They must be able to map multiple anonymization levels with defined risks to the trust levels they share with (would-be) receivers. It is not until there are industry standards for multiple levels of anonymization that we will be able to move forward and achieve the goal of widespread sharing of logs for security researchers.

Connected through hyperedge HE-1 (induced by source paper "controlled data sharing for collaborative predictive blacklisting"):
  with members:
    - "what s the gist privacy preserving aggregation of user profiles"
    - "espresso efficient privacy preserving evaluation of sample set similarity"
    - "predictive blacklisting as an implicit recommendation system"
    - "evaluating the utility of anonymized network traces for intrusion detection"

Connected through hyperedge HE-2 (induced by source paper "security and privacy policy languages a survey categorization and gap identification"):
  with members:
    - "n3logic a logical framework for the world wide web"

Connected through hyperedge HE-3 (induced by source paper "privacy friendly collaboration for cyber threat mitigation"):
  with members:
    - "predictive blacklisting as an implicit recommendation system"
    - "evaluating the utility of anonymized network traces for intrusion detection"

Connected through hyperedge HE-4 (induced by source paper "sepia security through private information aggregation"):
  with members:
    - "on the utility of anonymized flow traces for anomaly detection"
    - "evaluating the utility of anonymized network traces for intrusion detection"

Connected through hyperedge HE-5 (induced by source paper "evaluating the utility of anonymized network traces for intrusion detection"):
  with members:
    - "how to break anonymity of the netflix prize dataset"
    - "scrub pa a multi level multi dimensional anonymization tool for process accounting"
    - "flaim a multi level anonymization framework for computer and network logs"

Connected through hyperedge HE-6 (induced by source paper "toward trusted sharing of network packet traces using anonymization single field privacy analysis tradeoffs"):
  with members:
    - "scrub pa a multi level multi dimensional anonymization tool for process accounting"

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)