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 domain specific language for the hybridization and static condensation of finite element methods"
  Abstract: In this paper, we introduce a domain-specific language (DSL) for concisely expressing localized linear algebra on finite element tensors, and its integration within a code-generation framework. This DSL is general enough to facilitate the automatic generation of cell-local linear algebra kernels necessary for the implementation of static condensation methods and local solvers for a variety of problems. We demonstrate its use for the static condensation of continuous Galerkin problems, and systems arising from hybridizing a finite element discretization. Additionally, we demonstrate how this DSL can be used to implement local post-processing techniques to achieve superconvergent approximation to mixed problems. Finally, we show that these hybridization and static condensation procedures can act as effective preconditioners for mixed problems. We use the DSL in this paper to implement high-level preconditioning interfaces for the hybridization of mixed problems, as well generic static condensation. Our implementation builds on the solver composability of the PETSc library by providing reduced operators, which are obtained from locally assembled expressions, with the necessary context to specify full solver configurations on the resulting linear systems. We present some examples for model second-order elliptic problems, including a new hybridization preconditioner for the linearized system in a nonlinear method for a simplified atmospheric model.

Connected through hyperedge HE-1 (induced by source paper "composable block solvers for the four field double porosity permeability model"):
  with members:
    - "a stabilized mixed discontinuous galerkin formulation for double porosity permeability model"
    - "a scalable variational inequality approach for flow through porous media models with pressure dependent viscosity"
    - "comparative study of finite element methods using the time accuracy size tas spectrum analysis"
    - "modeling flow in porous media with double porosity permeability a stabilized mixed formulation error analysis and numerical solutions"
    - "a performance spectrum for parallel computational frameworks that solve pdes"
    - "tsfc a structure preserving form compiler"
    - "firedrake automating the finite element method by composing abstractions"
    - "large scale optimization based non negative computational framework for diffusion equations parallel implementation and performance studies"

Connected through hyperedge HE-2 (induced by source paper "code generation for generally mapped finite elements"):
  with members:
    - "solver composition across the pde linear algebra barrier"
    - "tsfc a structure preserving form compiler"
    - "firedrake automating the finite element method by composing abstractions"
    - "exposing and exploiting structure optimal code generation for high order finite element methods"
    - "an algorithm for the optimization of finite element integration loops"
    - "unified form language a domain specific language for weak formulations of partial differential equations"

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.MS(Mathematical Software)