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: "there is no deadline time evolution of wikipedia discussions"
  Abstract: Wikipedia articles are by definition never finished: at any moment their content can be edited, or discussed in the associated talk pages. In this study we analyse the evolution of these discussions to unveil patterns of collective participation along the temporal dimension, and to shed light on the process of content creation on different topics. At a micro-scale, we investigate peaks in the discussion activity and we observe a non-trivial relationship with edit activity. At a larger scale, we introduce a measure to account for how fast discussions grow in complexity, and we find speeds that span three orders of magnitude for different articles. Our analysis should help the community in tasks such as early detection of controversies and assessment of discussion maturity.

Connected through hyperedge HE-1 (induced by source paper "happening happen predict infer event series completion in a knowledge graph"):
  with members:
    - "eventkg the hub of event knowledge on the web and biographical timeline generation"
    - "inferring missing categorical information in noisy and sparse web markup"
    - "towards better understanding researcher strategies in cross lingual event analytics"
    - "eventkg tl creating cross lingual timelines from an event centric knowledge graph"
    - "eventkg a multilingual event centric temporal knowledge graph"
    - "stranse a novel embedding model of entities and relationships in knowledge bases"
    - "proje embedding projection for knowledge graph completion"

Connected through hyperedge HE-2 (induced by source paper "highlighting entanglement of cultures via ranking of multilingual wikipedia articles"):
  with members:
    - "spectral properties of google matrix of wikipedia and other networks"
    - "toward two dimensional search engines"
    - "biographical social networks on wikipedia a cross cultural study of links that made history"
    - "a practical approach to language complexity a wikipedia case study"
    - "towards physical laws for software architecture"
    - "two dimensional ranking of wikipedia articles"

Connected through hyperedge HE-3 (induced by source paper "modelling page view dynamics on wikipedia"):
  with members:
    - "from user comments to on line conversations"
    - "dynamical classes of collective attention in twitter"
    - "predicting the popularity of online content"
    - "novelty and collective attention"

Connected through hyperedge HE-4 (induced by source paper "jointly they edit examining the impact of community identification on political interaction in wikipedia"):
  with members:
    - "measuring the happiness of large scale written expression songs blogs and presidents"

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)