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 role of emotions in contributors activity a case study on the gentoo community"
  Abstract: We analyze the relation between the emotions and the activity of contributors in the Open Source Software project GENTOO. Our case study builds on extensive data sets from the project's bug tracking platform BUGZILLA, to quantify the activity of contributors, and its mail archives, to quantify the emotions of contributors by means of sentiment analysis. The GENTOO project is known for a period of centralization within its bug triaging community. This was followed by considerable changes in community organization and performance after the sudden retirement of the central contributor. We analyze how this event correlates with the negative emotions, both in bilateral email discussions with the central contributor, and at the level of the whole community of contributors. We then extend our study to consider the activity patterns of GENTOO contributors in general. We find that contributors are more likely to become inactive when they express strong positive or negative emotions in the bug tracker, or when they deviate from the expected value of emotions in the mailing list. We use these insights to develop a Bayesian classifier that detects the risk of contributors leaving the project. Our analysis opens new perspectives for measuring online contributor motivation by means of sentiment analysis and for real-time predictions of contributor turnover in Open Source Software projects.

Connected through hyperedge HE-1 (induced by source paper "sentimoji an emoji powered learning approach for sentiment analysis in software engineering"):
  with members:
    - "a benchmark study on sentiment analysis for software engineering research"
    - "on the use of emoticons in open source software development"
    - "sentiment polarity detection for software development"
    - "through a gender lens learning usage patterns of emojis from large scale android users"
    - "a first look at emoji usage on github an empirical study"
    - "spice up your chat the intentions and sentiment effects of using emoji"
    - "attention is all you need"
    - "mining valence arousal and dominance possibilities for detecting burnout and productivity"

Connected through hyperedge HE-2 (induced by source paper "analysing time stamped co editing networks in software development teams using git2net"):
  with members:
    - "when is a network a network multi order graphical model selection in pathways and temporal networks"
    - "how do oss projects change in number and size a large scale analysis to test a model of project growth"
    - "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 "how to ask for technical help evidence based guidelines for writing questions on stack overflow"):
  with members:
    - "semeval 2016 task 4 sentiment analysis in twitter"
    - "bootstrapping a lexicon for emotional arousal in software engineering"
    - "emotxt a toolkit for emotion recognition from text"
    - "recommending insightful comments for source code using crowdsourced knowledge"
    - "do feelings matter on the correlation of affects and the self assessed productivity in software engineering"
    - "how to ask for a favor a case study on the success of altruistic requests"

Connected through hyperedge HE-4 (induced by source paper "a first look at emoji usage on github an empirical study"):
  with members:
    - "through a gender lens learning usage patterns of emojis from large scale android users"
    - "twitter sentiment analysis via bi sense emoji embedding and attention based lstm"
    - "spice up your chat the intentions and sentiment effects of using emoji"
    - "modelling politics in requirements engineering adding emoji to existing notations"
    - "emoticons vs emojis on twitter a causal inference approach"
    - "sentiment of emojis"

Connected through hyperedge HE-5 (induced by source paper "analysing developers affectiveness through markov chain models"):
  with members:
    - "easier contagion and weaker ties make anger spread faster than joy in social media"
    - "mining valence arousal and dominance possibilities for detecting burnout and productivity"
    - "understanding the affect of developers theoretical background and guidelines for psychoempirical software engineering"
    - "happy software developers solve problems better psychological measurements in empirical software engineering"
    - "a computational approach to politeness with application to social factors"

Connected through hyperedge HE-6 (induced by source paper "expressions of sentiments during code reviews male vs female"):
  with members:
    - "sentiment polarity detection for software development"

Connected through hyperedge HE-7 (induced by source paper "towards a theory of affect and software developers performance"):
  with members:
    - "understanding the affect of developers theoretical background and guidelines for psychoempirical software engineering"
    - "in need of creative mobile service ideas forget adults and ask young children"
    - "software developers moods emotions and performance"
    - "a framework for systematic analysis of open access journals and its application in software engineering and information systems"
    - "happy software developers solve problems better psychological measurements in empirical software engineering"
    - "are happy developers more productive"
    - "commitment nets in software process improvement"

Connected through hyperedge HE-8 (induced by source paper "sentiment cascades in the 15m movement"):
  with members:
    - "social resilience in online communities the autopsy of friendster"
    - "happiness is assortative in online social 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)