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 importance and criticality of spreadsheets in the city of london"
  Abstract: Spreadsheets have been with us in their present form for over a quarter of a century. We have become so used to them that we forget that we are using them at all. It may serve us well to stand back for a moment to review where, when and how we use spreadsheets in the financial markets and elsewhere in order to inform research that may guide their future development. In this article I bring together the experiences of a number of senior practitioners who have spent much of their careers working with large spreadsheets that have been and continue to be used to support major financial transactions and manage large institutions in the City of London. The author suggests that the City of London is presently exposed to significant reputational risk through the continued uncontrolled use of critical spreadsheets in the financial markets and elsewhere.

Connected through hyperedge HE-1 (induced by source paper "bientropy trientropy and primality"):
  with members:
    - "edu edition spreadsheet competency framework"
    - "problem solving in sprego"
    - "a primer on spreadsheet analytics"
    - "spreadsheet engineering a research framework"

Connected through hyperedge HE-2 (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"
    - "a paradigm for spreadsheet engineering methodologies"
    - "considering functional spreadsheet operator usage suggests the value of example driven modelling for decision support systems"
    - "recommended practices for spreadsheet testing"

Connected through hyperedge HE-3 (induced by source paper "bientropy the approximate entropy of a finite binary string"):
  with members:
    - "user defined spreadsheet functions in excel"
    - "spreadsheets and the financial collapse"
    - "building financial accuracy into spreadsheets"

Connected through hyperedge HE-4 (induced by source paper "effect of range naming conventions on reliability and development time for simple spreadsheet formulas"):
  with members:
    - "an exploratory analysis of the impact of named ranges on the debugging performance of novice users"
    - "the lookup technique to replace nested if formulas in spreadsheet programming"
    - "does an awareness of differing types of spreadsheet errors aid end users in identifying spreadsheets errors"
    - "reducing overconfidence in spreadsheet development"
    - "spreadsheet end user behaviour analysis"

Connected through hyperedge HE-5 (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 paradigm for spreadsheet engineering methodologies"
    - "a primer on spreadsheet analytics"
    - "source code protection for applications written in microsoft excel and google spreadsheet"

Connected through hyperedge HE-6 (induced by source paper "defending the future an msc module in end user computing risk management"):
  with members:
    - "milestones for teaching the spreadsheet program"
    - "eusprig team work tools education audit management"
    - "reducing overconfidence in spreadsheet development"
    - "controlling end user computing applications a case study"
    - "when why and how to test spreadsheets"
    - "investigating the potential of test driven development for spreadsheet engineering"
    - "recommended practices for spreadsheet testing"
    - "spreadsheet engineering a research framework"

Connected through hyperedge HE-7 (induced by source paper "error estimation in large spreadsheets using bayesian statistics"):
  with members:
    - "thinking is bad implications of human error research for spreadsheet research and practice"
    - "a typical model audit approach spreadsheet audit methodologies in the city of london"

Connected through hyperedge HE-8 (induced by source paper "the lookup technique to replace nested if formulas in spreadsheet programming"):
  with members:
    - "regulation and the integrity of spreadsheets in the information supply chain"
    - "new guidelines for spreadsheets"

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.CY(Computers and Society)