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: "an analysis on the influence of network topologies on local and global dynamics of metapopulation systems"
  Abstract: Metapopulations are models of ecological systems, describing the interactions and the behavior of populations that live in fragmented habitats. In this paper, we present a model of metapopulations based on the multivolume simulation algorithm tau-DPP, a stochastic class of membrane systems, that we utilize to investigate the influence that different habitat topologies can have on the local and global dynamics of metapopulations. In particular, we focus our analysis on the migration rate of individuals among adjacent patches, and on their capability of colonizing the empty patches in the habitat. We compare the simulation results obtained for each habitat topology, and conclude the paper with some proposals for other research issues concerning metapopulations.

Connected through hyperedge HE-1 (induced by source paper "a general overview of formal languages for individual based modelling of ecosystems"):
  with members:
    - "process ordering in a process calculus for spatially explicit ecological models"
    - "current trends and future research directions for interactive music"
    - "assembling sequences of dna using an on line algorithm based on debruijn graphs"
    - "probabilistic extension to the concurrent constraint factor oracle model for music improvisation"
    - "mela modelling in ecology with location attributes"
    - "mean field semantics for a process calculus for spatially explicit ecological models"
    - "a model for interactive scores with temporal constraints and conditional branching"
    - "structured interactive music scores"

Connected through hyperedge HE-2 (induced by source paper "process ordering in a process calculus for spatially explicit ecological models"):
  with members:
    - "a spatial calculus of wrapped compartments"

Connected through hyperedge HE-3 (induced by source paper "a process calculus for spatially explicit ecological models"):
  with members:
    - "a spatial calculus of wrapped compartments"

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.CE(Computational Engineering, Finance, and Science)