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: "evocation and elaboration of solutions different types of problem solving actions an empirical study on the design of an aerospace artifact"
  Abstract: An observational study was conducted on a professional designer working on a design project in aerospace industry. The protocol data were analyzed in order to gain insight into the actions the designer used for the development of a solution to the corresponding problem. Different processes are described: from the "simple" evocation of a solution existing in memory, to the elaboration of a "new" solution out of mnesic entities without any clear link to the current problem. Control is addressed in so far as it concerns the priority among the different types of development processes: the progression from evocation of a "standard" solution to elaboration of a "new" solution is supposed to correspond to the resulting order, that is, the one in which the designer's activity proceeds. Short discussions of * the double status of "problem" and "solution," * the problem/solution knowledge units in memory and their access, and * the different abstraction levels on which problem and solution representations are developed, are illustrated by the results.

Connected through hyperedge HE-1 (induced by source paper "design one but in different forms"):
  with members:
    - "designing as construction of representations a dynamic viewpoint in cognitive design research"
    - "changing our view on design evaluation meetings methodology a study of software technical review meetings"
    - "reuse of designs desperately seeking an interdisciplinary cognitive approach"
    - "mental representations constructed by experts and novices in object oriented program comprehension"
    - "analysing viewpoints in design through the argumentation process"
    - "both generic design and different forms of designing"
    - "dynamic aspects of individual design activities a cognitive ergonomics viewpoint"

Connected through hyperedge HE-2 (induced by source paper "designing as construction of representations a dynamic viewpoint in cognitive design research"):
  with members:
    - "negotiation in collaborative assessment of design solutions an empirical study on a concurrent engineering process"
    - "an empirical study of software reuse by experts in object oriented design"
    - "changing our view on design evaluation meetings methodology a study of software technical review meetings"
    - "reuse of designs desperately seeking an interdisciplinary cognitive approach"
    - "cognitive effort in collective software design methodological perspectives in cognitive ergonomics"
    - "analysing viewpoints in design through the argumentation process"

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)