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: "workspace analysis of the orthoglide using interval analysis"
  Abstract: This paper addresses the workspace analysis of the orthoglide, a 3-DOF parallel mechanism designed for machining applications. This machine features three fixed parallel linear joints which are mounted orthogonally and a mobile platform which moves in the Cartesian x-y-z space with fixed orientation. The workspace analysis is conducted on the bases of prescribed kinetostatic performances. The interesting features of the orthoglide are a regular Cartesian workspace shape, uniform performances in all directions and good compactness. Interval analysis based methods for computing the dextrous workspace and the largest cube enclosed in this workspace are presented.

Connected through hyperedge HE-1 (induced by source paper "a translational three degrees of freedom parallel mechanism with partial motion decoupling and analytic direct kinematics"):
  with members:
    - "architecture optimization of a 3 dof translational parallel mechanism for machining applications the orthoglide"
    - "design of a 3 axis parallel machine tool for high speed machining the orthoglide"
    - "a comparative study of parallel kinematic architectures for machining applications"

Connected through hyperedge HE-2 (induced by source paper "design strategies for the geometric synthesis of orthoglide type mechanisms"):
  with members:
    - "architecture optimization of a 3 dof translational parallel mechanism for machining applications the orthoglide"
    - "kinematics and workspace analysis of a three axis parallel manipulator the orthoglide"
    - "a comparative study of parallel kinematic architectures for machining applications"
    - "kinematic analysis of a new parallel machine tool the orthoglide"
    - "the orthoglide kinematics and workspace analysis"

Connected through hyperedge HE-3 (induced by source paper "architecture optimization of a 3 dof translational parallel mechanism for machining applications the orthoglide"):
  with members:
    - "design of a 3 axis parallel machine tool for high speed machining the orthoglide"
    - "a comparative study of parallel kinematic architectures for machining applications"
    - "kinematic analysis of a new parallel machine tool the orthoglide"

Connected through hyperedge HE-4 (induced by source paper "an interval analysis based study for the design and the comparison of 3 dof parallel kinematic machines"):
  with members:
    - "architecture optimization of a 3 dof translational parallel mechanism for machining applications the orthoglide"
    - "definition sets for the direct kinematics of parallel manipulators"
    - "a comparative study of parallel kinematic architectures for machining applications"

Connected through hyperedge HE-5 (induced by source paper "the kinematic analysis of a symmetrical three degree of freedom planar parallel manipulator"):
  with members:
    - "uniqueness domains in the workspace of parallel manipulators"

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.RO(Robotics)