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: "big data privacy in the internet of things era"
  Abstract: Over the last few years, we've seen a plethora of Internet of Things (IoT) solutions, products, and services make their way into the industry's marketplace. All such solutions will capture large amounts of data pertaining to the environment as well as their users. The IoT's objective is to learn more and better serve system users. Some IoT solutions might store data locally on devices ("things"), whereas others might store it in the cloud. The real value of collecting data comes through data processing and aggregation on a large scale, where new knowledge can be extracted. However, such procedures can lead to user privacy issues. This article discusses some of the main challenges of privacy in the IoT as well as opportunities for research and innovation. The authors also introduce some of the ongoing research efforts that address IoT privacy issues.

Connected through hyperedge HE-1 (induced by source paper "security privacy and trust for smart mobile internet of things m iot a survey"):
  with members:
    - "a framework for mitigating zero day attacks in iot"
    - "nhad neuro fuzzy based horizontal anomaly detection in online social networks"
    - "mobile edge computing fog et al a survey and analysis of security threats and challenges"
    - "advertising in the iot era vision and challenges"
    - "managing service heterogeneity using osmotic computing"
    - "extension of mih to support fpmipv6 for optimized heterogeneous handover"
    - "securing wireless communications of the internet of things from the physical layer an overview"
    - "traffic aware patching for cyber security in mobile iot"

Connected through hyperedge HE-2 (induced by source paper "decentralized detection with robust information privacy protection"):
  with members:
    - "solving linear programs in the current matrix multiplication time"
    - "robust privacy utility tradeoffs under differential privacy and hamming distortion"
    - "multilayer nonlinear processing for information privacy in sensor networks"
    - "hypothesis testing under mutual information privacy constraints in the high privacy regime"
    - "hypothesis testing under maximal leakage privacy constraints"
    - "robust decentralized detection and social learning in tandem networks"
    - "whose opinion to follow in multihypothesis social learning a large deviations perspective"
    - "information extraction under privacy constraints"

Connected through hyperedge HE-3 (induced by source paper "challenges of internet of things and big data integration"):
  with members:
    - "evaluation of iot based computational intelligence tools for dna sequence analysis in bioinformatics"
    - "load balancing with preemptive and non preemptive task scheduling in cloud computing"
    - "challenges bridge between cloud and iot"
    - "the rise of internet of things iot in big healthcare data review and open research issues"
    - "treatment of reactive routing protocols using second chance based on malicious behavior of nodes in manets"
    - "multilingual website usability analysis based on an international user survey"
    - "a review on internet of things iot internet of everything ioe and internet of nano things iont"

Connected through hyperedge HE-4 (induced by source paper "achieving data dissemination with security using fiware and intel software guard extensions sgx"):
  with members:
    - "security and privacy preserving data aggregation in cloud computing"
    - "trustshadow secure execution of unmodified applications with arm trustzone"
    - "secure content based routing using intel software guard extensions"
    - "oscar object security architecture for the internet of things"

Connected through hyperedge HE-5 (induced by source paper "fog computing for sustainable smart cities a survey"):
  with members:
    - "fog networking an overview on research opportunities"
    - "a survey of systems for massive stream analytics"
    - "cloudrone micro clouds in the sky"
    - "applying seamful design in location based mobile museum applications"
    - "fog data enhancing telehealth big data through fog computing"
    - "energy efficient location and activity aware on demand mobile distributed sensing platform for sensing as a service in iot clouds"
    - "the emerging internet of things marketplace from an industrial perspective a survey"
    - "a survey on internet of things from industrial market perspective"

Connected through hyperedge HE-6 (induced by source paper "valorising the iot databox creating value for everyone"):
  with members:
    - "end to end privacy for open big data markets"
    - "the emerging internet of things marketplace from an industrial perspective a survey"
    - "a survey on internet of things from industrial market perspective"
    - "improve the sustainability of internet of things through trading based value creation"
    - "human data interaction the human face of the data driven society"
    - "sensing as a service model for smart cities supported by internet of things"
    - "a market for unbiased private data paying individuals according to their privacy attitudes"
    - "your browsing behavior for a big mac economics of personal information online"

Connected through hyperedge HE-7 (induced by source paper "privacy by design framework for assessing internet of things applications and platforms"):
  with members:
    - "analytics as a service in a multi cloud environment through semantically enabled hierarchical data processing"
    - "energy efficient location and activity aware on demand mobile distributed sensing platform for sensing as a service in iot clouds"
    - "the emerging internet of things marketplace from an industrial perspective a survey"
    - "iprivacy a distributed approach to privacy on the cloud"
    - "context aware computing for the internet of things a survey"
    - "privacy design strategies"

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.CY(Computers and Society)