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: "a paradigm for spreadsheet engineering methodologies"
  Abstract: Spreadsheet engineering methodologies are diverse and sometimes contradictory. It is difficult for spreadsheet developers to identify a spreadsheet engineering methodology that is appropriate for their class of spreadsheet, with its unique combination of goals, type of problem, and available time and resources. There is a lack of well-organized, proven methodologies with known costs and benefits for well-defined spreadsheet classes. It is difficult to compare and critically evaluate methodologies. We present a paradigm for organizing and interpreting spreadsheet engineering recommendations. It systematically addresses the myriad choices made when developing a spreadsheet, and explicitly considers resource constraints and other development parameters. This paradigm provides a framework for evaluation, comparison, and selection of methodologies, and a list of essential elements for developers or codifiers of new methodologies. This paradigm identifies gaps in our knowledge that merit further research.

Connected through hyperedge HE-1 (induced by source paper "development and experimentation of a software tool for identifying high risk spreadsheets for auditing"):
  with members:
    - "spreadsheet good practice is there any such thing"
    - "risk assessment for spreadsheet developments choosing which models to audit"
    - "controlling end user computing applications a case study"
    - "ensuring spreadsheet integrity with model master"
    - "rapid spreadsheet reshaping with excelsior multiple drastic changes to content and layout are easy when you represent enough structure"
    - "considering functional spreadsheet operator usage suggests the value of example driven modelling for decision support systems"
    - "the importance and criticality of spreadsheets in the city of london"
    - "recommended practices for spreadsheet testing"

Connected through hyperedge HE-2 (induced by source paper "spatial modelling techniques in microsoft excel"):
  with members:
    - "complexity metrics for spreadsheet models"

Connected through hyperedge HE-3 (induced by source paper "towards evaluating the quality of a spreadsheet the case of the analytical spreadsheet model"):
  with members:
    - "spreadsheets grow up three spreadsheet engineering methodologies for large financial planning models"
    - "a primer on spreadsheet analytics"
    - "source code protection for applications written in microsoft excel and google spreadsheet"
    - "the importance and criticality of spreadsheets in the city of london"

Connected through hyperedge HE-4 (induced by source paper "spreadsheets the good the bad and the downright ugly"):
  with members:
    - "spreadsheet good practice is there any such thing"
    - "automated spreadsheet development"
    - "spreadsheet engineering a research framework"

Connected through hyperedge HE-5 (induced by source paper "spreadsheets grow up three spreadsheet engineering methodologies for large financial planning models"):
  with members:
    - "new guidelines for spreadsheets"
    - "spreadsheet engineering a research framework"

Connected through hyperedge HE-6 (induced by source paper "an investigation of the incidence and effect of spreadsheet errors caused by the hard coding of input data values into formulas"):
  with members:
    - "exploring human factors in spreadsheet development"
    - "sarbanes oxley what about all the spreadsheets"
    - "spreadsheet engineering a research framework"

Connected through hyperedge HE-7 (induced by source paper "towards a spreadsheet engineering"):
  with members:
    - "when why and how to test spreadsheets"
    - "recommended practices for spreadsheet testing"
    - "spreadsheet engineering a research framework"

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.HC(Human-Computer Interaction)