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: "evolutionary trends of developer coordination a network approach"
  Abstract: Software evolution is a fundamental process that transcends the realm of technical artifacts and permeates the entire organizational structure of a software project. By means of a longitudinal empirical study of 18 large open-source projects, we examine and discuss the evolutionary principles that govern the coordination of developers. By applying a network-analytic approach, we found that the implicit and self-organizing structure of developer coordination is ubiquitously described by non-random organizational principles that defy conventional software-engineering wisdom. In particular, we found that: (a) developers form scale-free networks, in which the majority of coordination requirements arise among an extremely small number of developers, (b) developers tend to accumulate coordination requirements with more and more developers over time, presumably limited by an upper bound, and (c) initially developers are hierarchically arranged, but over time, form a hybrid structure, in which core developers are hierarchically arranged and peripheral developers are not. Our results suggest that the organizational structure of large projects is constrained to evolve towards a state that balances the costs and benefits of developer coordination, and the mechanisms used to achieve this state depend on the project's scale.

Connected through hyperedge HE-1 (induced by source paper "a systematic mapping study of developer social network research"):
  with members:
    - "developer prioritization in bug repositories"
    - "on using network science in mining developers collaboration in software engineering a systematic literature review"
    - "classifying developers into core and peripheral an empirical study on count and network metrics"
    - "lessons learned from applying social network analysis on an industrial free libre open source software ecosystem"
    - "analysis of the social community based on the network growing model in open source software community"
    - "converging work talk patterns in online task oriented communities"
    - "categorizing bugs with social networks a case study on four open source software communities"
    - "a quantitative study of social organisation in open source software communities"

Connected through hyperedge HE-2 (induced by source paper "characterizing and understanding software developer networks in security development"):
  with members:
    - "a manually curated dataset of fixes to vulnerabilities of open source software"
    - "why software projects need heroes lessons learned from 1100 projects"
    - "we don t need another hero the impact of heroes on software development"
    - "developer prioritization in bug repositories"
    - "classifying developers into core and peripheral an empirical study on count and network metrics"
    - "categorizing bugs with social networks a case study on four open source software communities"
    - "the rise and fall of a central contributor dynamics of social organization and performance in the gentoo community"

Connected through hyperedge HE-3 (induced by source paper "activity based analysis of open source software contributors roles and dynamics"):
  with members:
    - "how do the open source communities address usability and ux issues an exploratory study"
    - "classifying developers into core and peripheral an empirical study on count and network metrics"

Connected through hyperedge HE-4 (induced by source paper "classifying developers into core and peripheral an empirical study on count and network metrics"):
  with members:
    - "identification of core periphery structure in 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.SE(Software Engineering)