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: "a new trusted and collaborative agent based approach for ensuring cloud security"
  Abstract: In order to determine the user's trust is a growing concern for ensuring privacy and security in a cloud computing environment. In cloud, user's data is stored in one or more remote server(s) which poses more security challenges for the system. One of the most important concerns is to protect user's sensitive information from other users and hackers that may cause data leakage in cloud storage. Having this security challenge in mind, this paper focuses on the development of a more secure cloud environment, to determine the trust of the service requesting authorities by using a novel VM (Virtual Machine) monitoring system. Moreover, this research aims towards proposing a new trusted and collaborative agent-based two-tier framework, titled WAY (Who Are You?), to protect cloud resources. The framework can be used to provide security in network, infrastructure, as well as data storage in a heterogeneous cloud platform. If the trust updating policy is based on network activities, then the framework can provide network security. Similarly, it provides storage security by monitoring unauthorized access activities by the Cloud Service Users (CSU). Infrastructure security can be provided by monitoring the use of privileged instructions within the isolated VMs. The uniqueness of the proposed security solution lies in the fact that it ensures security and privacy both at the service provider level as well as at the user level in a cloud environment.

Connected through hyperedge HE-1 (induced by source paper "a security framework for cloud data storage cds based on agent"):
  with members:
    - "a cloud security framework based on trust model and mobile agent"

Connected through hyperedge HE-2 (induced by source paper "survey on security issues in file management in cloud computing environment"):
  with members:
    - "sleep deprivation attack detection in wireless sensor network"
    - "survey on security issues in cloud computing and associated mitigation techniques"

Connected through hyperedge HE-3 (induced by source paper "securing cloud from cloud drain"):
  with members:
    - "rism reputation based intrusion detection system for mobile ad hoc networks"
    - "inter cloud data security strategies"
    - "cloud computing an approach with modern cryptography"
    - "survey on security issues in cloud computing and associated mitigation techniques"
    - "a survey on security issues in cloud computing"
    - "a novel multipath approach to security in mobile ad hoc networks manets"

Connected through hyperedge HE-4 (induced by source paper "increasing security in cloud environment"):
  with members:
    - "rism reputation based intrusion detection system for mobile ad hoc networks"
    - "detection and prevention of botnets and malware in an enterprise network"
    - "a paxos based state machine replication system for anomaly detection"
    - "a multi dimensional approach towards intrusion detection system"
    - "a hybrid approach towards intrusion detection based on artificial immune system and soft computing"
    - "a survey on security issues in cloud computing"
    - "grid security and integration with minimal performance degradation"
    - "embedding secret data in html web page"

Connected through hyperedge HE-5 (induced by source paper "inter cloud data security strategies"):
  with members:
    - "rism reputation based intrusion detection system for mobile ad hoc networks"
    - "increasing security in cloud environment"
    - "a survey on security issues in cloud computing"
    - "grid security and integration with minimal performance degradation"
    - "security scheme for distributed dos in mobile ad hoc networks"
    - "implementation of a cloud data server cds for providing secure service in e business"
    - "a semi distributed reputation based intrusion detection system for mobile adhoc networks"
    - "a brief history of the internet"

Connected through hyperedge HE-6 (induced by source paper "study of encryption and decryption of wave file in image formats"):
  with members:
    - "rism reputation based intrusion detection system for mobile ad hoc networks"
    - "ant colony based routing for mobile ad hoc networks towards improved quality of services"
    - "steganography and steganalysis different approaches"
    - "data hiding techniques using prime and natural numbers"
    - "a semi distributed reputation based intrusion detection system for mobile adhoc networks"
    - "an lsb data hiding technique using natural number decomposition"

Connected through hyperedge HE-7 (induced by source paper "machine translation systems in india"):
  with members:
    - "rism reputation based intrusion detection system for mobile ad hoc networks"
    - "a survey on security issues in cloud computing"

Connected through hyperedge HE-8 (induced by source paper "a heuristic reputation based system to detect spam activities in a social networking platform hrsssnp"):
  with members:
    - "rism reputation based intrusion detection system for mobile ad hoc networks"
    - "survey on security issues in cloud computing and associated mitigation techniques"
    - "security scheme for distributed dos in mobile ad hoc networks"
    - "a semi distributed reputation based intrusion detection system for mobile adhoc networks"
    - "compchall addressing password guessing attacks"

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)