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: "the missing ones key ingredients towards effective ambient assisted living systems"
  Abstract: The population of elderly people keeps increasing rapidly, which becomes a predominant aspect of our societies. As such, solutions both efficacious and cost-effective need to be sought. Ambient Assisted Living (AAL) is a new approach which promises to address the needs from elderly people. In this paper, we claim that human participation is a key ingredient towards effective AAL systems, which not only saves social resources, but also has positive relapses on the psychological health of the elderly people. Challenges in increasing the human participation in ambient assisted living are discussed in this paper and solutions to meet those challenges are also proposed. We use our proposed mutual assistance community, which is built with service oriented approach, as an example to demonstrate how to integrate human tasks in AAL systems. Our preliminary simulation results are presented, which support the effectiveness of human participation.

Connected through hyperedge HE-1 (induced by source paper "how resilient are our societies analyses models and preliminary results"):
  with members:
    - "on resilient behaviors in computational systems and environments"
    - "a framework for trustworthiness assessment based on fidelity in cyber and physical domains"
    - "service oriented communities visions and contributions towards social organizations"
    - "antifragility elasticity resilience machine learning models and algorithms for open system fidelity"
    - "reflections on organization emergence and control in sociotechnical systems"
    - "mutualistic relationships in service oriented communities and fractal social organizations"

Connected through hyperedge HE-2 (induced by source paper "service oriented communities visions and contributions towards social organizations"):
  with members:
    - "a design tool to reason about ambient assisted living systems"
    - "on the requirements of new software development"
    - "promises and challenges of ambient assisted living systems"
    - "a service oriented infrastructure approach for mutual assistance communities"
    - "participant a new concept for optimally assisting the elder people"

Connected through hyperedge HE-3 (induced by source paper "antifragility elasticity resilience machine learning models and algorithms for open system fidelity"):
  with members:
    - "on the constituent attributes of software and organizational resilience"
    - "application layer fault tolerance protocols"
    - "participant a new concept for optimally assisting the elder people"

Connected through hyperedge HE-4 (induced by source paper "reflections on organization emergence and control in sociotechnical systems"):
  with members:
    - "service oriented communities visions and contributions towards social organizations"
    - "behavior organization substance three gestalts of general systems theory"
    - "participant a new concept for optimally assisting the elder people"

Connected through hyperedge HE-5 (induced by source paper "mutualistic relationships in service oriented communities and fractal social organizations"):
  with members:
    - "service oriented communities visions and contributions towards social organizations"
    - "quality indicators for collective systems resilience"
    - "participant a new concept for optimally assisting the elder people"

Connected through hyperedge HE-6 (induced by source paper "quality indicators for collective systems resilience"):
  with members:
    - "service oriented communities visions and contributions towards social organizations"
    - "participant a new concept for optimally assisting the elder people"

Connected through hyperedge HE-7 (induced by source paper "on the constituent attributes of software and organizational resilience"):
  with members:
    - "a design tool to reason about ambient assisted living systems"
    - "on the requirements of new software development"
    - "a survey of linguistic structures for application level fault tolerance"
    - "service oriented communities visions and contributions towards social organizations"
    - "participant a new concept for optimally assisting the elder people"

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)