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: "application layer fault tolerance protocols"
  Abstract: In this technological era, failure to address application-layer fault-tolerance, a key ingredient to crafting truly dependable computer services, leaves the door open to unfortunate consequences in quality of service. Application-Layer Fault-Tolerance Protocols increases awareness of the need for application-layer fault-tolerance (ALFT) through introduction of problems and qualitative analysis of solutions. A necessary read for researchers, practitioners, and students in dependability engineering, this book collects emerging research to offer a systematic, critical organization of the current knowledge in ALFT.

Connected through hyperedge HE-1 (induced by source paper "systems resilience and organization analogies and points of contact with hierarchy theory"):
  with members:
    - "towards a smarter organization for a self servicing society"
    - "a framework for trustworthiness assessment based on fidelity in cyber and physical domains"
    - "on the behavioral interpretation of system environment fit and auto resilience"
    - "quality indicators for collective systems resilience"
    - "antifragility elasticity resilience machine learning models and algorithms for open system fidelity"
    - "behavior organization substance three gestalts of general systems theory"
    - "mutualistic relationships in service oriented communities and fractal social organizations"

Connected through hyperedge HE-2 (induced by source paper "antifragility elasticity resilience machine learning models and algorithms for open system fidelity"):
  with members:
    - "the missing ones key ingredients towards effective ambient assisted living systems"
    - "on the constituent attributes of software and organizational resilience"
    - "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.SE(Software Engineering)