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: "tsfc a structure preserving form compiler"
  Abstract: A form compiler takes a high-level description of the weak form of partial differential equations and produces low-level code that carries out the finite element assembly. In this paper we present the Two-Stage Form Compiler (TSFC), a new form compiler with the main motivation to maintain the structure of the input expression as long as possible. This facilitates the application of optimizations at the highest possible level of abstraction. TSFC features a novel, structure-preserving method for separating the contributions of a form to the subblocks of the local tensor in discontinuous Galerkin problems. This enables us to preserve the tensor structure of expressions longer through the compilation process than other form compilers. This is also achieved in part by a two-stage approach that cleanly separates the lowering of finite element constructs to tensor algebra in the first stage, from the scheduling of those tensor operations in the second stage. TSFC also efficiently traverses complicated expressions, and experimental evaluation demonstrates good compile-time performance even for highly complex forms.

Connected through hyperedge HE-1 (induced by source paper "slate extending firedrake s domain specific abstraction to hybridized solvers for geoscience and beyond"):
  with members:
    - "solver composition across the pde linear algebra barrier"
    - "firedrake automating the finite element method by composing abstractions"
    - "high level implementation of geometric multigrid solvers for finite element problems applications in atmospheric modelling"
    - "dolfin automated finite element computing"

Connected through hyperedge HE-2 (induced by source paper "a study of vectorization for matrix free finite element methods"):
  with members:
    - "solver composition across the pde linear algebra barrier"
    - "fast matrix free evaluation of discontinuous galerkin finite element operators"
    - "loo py transformation based code generation for gpus and cpus"
    - "finite element integration on gpus"

Connected through hyperedge HE-3 (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"
    - "a domain specific language for the hybridization and static condensation of finite element methods"
    - "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"
    - "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-4 (induced by source paper "code generation for generally mapped finite elements"):
  with members:
    - "a domain specific language for the hybridization and static condensation of finite element methods"
    - "solver composition across the pde linear algebra barrier"
    - "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"

Connected through hyperedge HE-5 (induced by source paper "a domain specific language for the hybridization and static condensation of finite element methods"):
  with members:
    - "solver composition across the pde linear algebra barrier"
    - "firedrake automating the finite element method by composing abstractions"
    - "high level implementation of geometric multigrid solvers for finite element problems applications in atmospheric modelling"

Connected through hyperedge HE-6 (induced by source paper "compiling diderot from tensor calculus to c"):
  with members:
    - "scalar and tensor parameters for importing tensor index notation including einstein summation notation"

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)