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: "towards an interdisciplinary socio technical analysis of software ecosystem health"
  Abstract: This extended abstract presents the research goals and preliminary research results of the interdisciplinary research project SECOHealth, an ongoing collaboration between research teams of Polytechnique Montreal (Canada), the University of Mons (Belgium) and Laval University (Canada). SECOHealth aims to contribute to research and practice in software engineering by delivering a validated interdisciplinary scientific methodology and a catalog of guidelines and recommendation tools for improving software ecosystem health.

Connected through hyperedge HE-1 (induced by source paper "why we engage in floss answers from core developers"):
  with members:
    - "why and how java developers break apis"
    - "why modern open source projects fail"
    - "a novel approach for estimating truck factors"
    - "classifying developers into core and peripheral an empirical study on count and network metrics"
    - "understanding the factors that impact the popularity of github repositories"
    - "why we refactor confessions of github contributors"

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)