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: "improve the sustainability of internet of things through trading based value creation"
  Abstract: Internet of Things (IoT) has been widely discussed over the past few years in technology point of view. However, the social aspects of IoT are seldom studied to date. In this paper, we discuss the IoT in social point of view. Specifically, we examine the strategies to increase the adoption of IoT in a sustainable manner. Such discussion is essential in today's context where adoption of IoT solutions by non-technical community is slow. Specially, large number of IoT solutions making their way into the market every day. We propose an trading-based value creation model based on sensing as a service paradigm in order to fuel the adoption of IoT. We discuss the value creation and its impact towards the society especially to households and their occupants. We also present results of two different surveys we conducted in order to examine the potential acceptance of the proposed model among the general public.

Connected through hyperedge HE-1 (induced by source paper "a taxonomy and future directions for sustainable cloud computing 360 degree view"):
  with members:
    - "sustainable cloud computing foundations and future directions"
    - "multi objective dynamic virtual machine consolidation in the cloud using ant colony system"
    - "energy throughput tradeoff in sustainable cloud ran with energy harvesting"
    - "software platforms for smart cities concepts requirements challenges and a unified reference architecture"
    - "optimized thermal aware job scheduling and control of data centers"
    - "energy efficient scheduling of cloud application components with brownout"
    - "sustainability aware cloud computing using virtual carbon tax"
    - "energy efficient and thermal aware resource management for heterogeneous datacenters"

Connected through hyperedge HE-2 (induced by source paper "valorising the iot databox creating value for everyone"):
  with members:
    - "end to end privacy for open big data markets"
    - "big data privacy in the internet of things era"
    - "the emerging internet of things marketplace from an industrial perspective a survey"
    - "a survey on internet of things from industrial market perspective"
    - "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-3 (induced by source paper "analytics as a service in a multi cloud environment through semantically enabled hierarchical data processing"):
  with members:
    - "context aware computing for the internet of things a survey"
    - "sensing as a service model for smart cities supported by internet of things"
    - "malstone towards a benchmark for analytics on large data clouds"

Connected through hyperedge HE-4 (induced by source paper "big data privacy in the internet of things era"):
  with members:
    - "context aware computing for the internet of things a survey"
    - "sensing as a service and big data"
    - "sensing as a service model for smart cities supported by internet of things"

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)