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: "complex adaptive digital ecosystems"
  Abstract: We investigate an abstract conceptualisation of DigitalEcosystems from a computer science perspective. We then provide a conceptual framework for the cross pollination of ideas, concepts and understanding between different classes of ecosystems through the universally applicable principles of Complex Adaptive Systems (CAS) modelling. A framework to assist the cross-disciplinary collaboration of research into Digital Ecosystems, including Digital BusinessEcosystems (DBEs) and Digital Knowledge Ecosystems (DKEs). So, we have defined the key steps towards a theoretical framework for Digital Ecosystems, that is compatible with the diverse theoretical views prevalent. Therefore, a theoretical edifice that can unify the diverse efforts within Digital Ecosystems research.

Connected through hyperedge HE-1 (induced by source paper "ecosystem oriented distributed evolutionary computing"):
  with members:
    - "self organisation of evolving agent populations in digital ecosystems"
    - "stability of evolving multiagent systems"
    - "the computing of digital ecosystems"
    - "digital ecosystems ecosystem oriented architectures"
    - "the abc of digital business ecosystems"
    - "digital ecosystems self organisation of evolving agent populations"
    - "digital ecosystems stability of evolving agent populations"
    - "biology of applied digital ecosystems"

Connected through hyperedge HE-2 (induced by source paper "self organisation of evolving agent populations in digital ecosystems"):
  with members:
    - "the computing of digital ecosystems"
    - "the abc of digital business ecosystems"
    - "digital ecosystems self organisation of evolving agent populations"
    - "scalability and optimisation of a committee of agents using genetic algorithm"
    - "digital ecosystems stability of evolving agent populations"
    - "biology of applied digital ecosystems"
    - "digital ecosystems optimisation by a distributed intelligence"
    - "digital ecosystems evolving service oriented architectures"

Connected through hyperedge HE-3 (induced by source paper "the computing of digital ecosystems"):
  with members:
    - "the abc of digital business ecosystems"
    - "digital business ecosystems natural science paradigms"
    - "digital ecosystems self organisation of evolving agent populations"
    - "biology of applied digital ecosystems"
    - "digital ecosystems optimisation by a distributed intelligence"
    - "digital ecosystems evolving service oriented architectures"
    - "creating a digital ecosystem service oriented architectures with distributed evolutionary computing"

Connected through hyperedge HE-4 (induced by source paper "digital ecosystems ecosystem oriented architectures"):
  with members:
    - "the computing of digital ecosystems"
    - "the abc of digital business ecosystems"
    - "digital business ecosystems natural science paradigms"
    - "digital ecosystems self organisation of evolving agent populations"
    - "biology of applied digital ecosystems"
    - "digital ecosystems evolving service oriented architectures"
    - "avoiding the bloat with stochastic grammar based genetic programming"

Connected through hyperedge HE-5 (induced by source paper "stability of evolving multiagent systems"):
  with members:
    - "the computing of digital ecosystems"
    - "the abc of digital business ecosystems"
    - "digital ecosystems self organisation of evolving agent populations"
    - "scalability and optimisation of a committee of agents using genetic algorithm"
    - "digital ecosystems stability of evolving agent populations"
    - "biology of applied digital ecosystems"

Connected through hyperedge HE-6 (induced by source paper "auction based resource allocation in digital ecosystems"):
  with members:
    - "mobile computing in digital ecosystems design issues and challenges"
    - "auction based distributed resource allocation for cooperation transmission in wireless networks"

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.MA(Multiagent Systems)