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: "boundary knot method for laplace and biharmonic problems"
  Abstract: The boundary knot method (BKM) [1] is a meshless boundary-type radial basis function (RBF) collocation scheme, where the nonsingular general solution is used instead of fundamental solution to evaluate the homogeneous solution, while the dual reciprocity method (DRM) is employed to approximation of particular solution. Despite the fact that there are not nonsingular RBF general solutions available for Laplace and biharmonic problems, this study shows that the method can be successfully applied to these problems. The high-order general and fundamental solutions of Burger and Winkler equations are also first presented here.

Connected through hyperedge HE-1 (induced by source paper "new rbf collocation methods and kernel rbf with applications"):
  with members:
    - "rbf based meshless boundary knot method and boundary particle method"
    - "relationship between boundary integral equation and radial basis function"
    - "new insights in boundary only and domain type rbf methods"
    - "several new domain type and boundary type numerical discretization schemes with radial basis function"

Connected through hyperedge HE-2 (induced by source paper "distance function wavelets part iii exotic transforms and series"):
  with members:
    - "orthonormal rbf wavelet and ridgelet like series and transforms for high dimensional problems"
    - "high order fundamental and general solutions of convection diffusion equation and their applications with boundary particle method"
    - "distance function wavelets part ii extended results and conjectures"
    - "definitions of distance function in radial basis function approach"

Connected through hyperedge HE-3 (induced by source paper "distance function wavelets part ii extended results and conjectures"):
  with members:
    - "high order fundamental and general solutions of convection diffusion equation and their applications with boundary particle method"
    - "definitions of distance function in radial basis function approach"

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.CE(Computational Engineering, Finance, and Science)