human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "non singular assembly mode changing motions for 3 rpr parallel manipulators"):
  Abstract: When moving from one arbitrary location at another, a parallel manipulator may change its assembly-mode without crossing a singularity. Because the non-singular change of assembly-mode cannot be simply detected, the actual assembly-mode during motion is difficult to track. This paper proposes a global explanatory approach to help better understand non-singular assembly-mode changing motions for 3-RPR planar parallel manipulators. The approach consists in fixing one of the actuated joints and analyzing the configuration-space as a surface in a 3-dimensional space. Such a global description makes it possible to display all possible non-singular assembly-mode changing trajectories.

Includes members:
  Member "architecture optimization of a 3 dof translational parallel mechanism for machining applications the orthoglide":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a translational three degrees of freedom parallel mechanism with partial motion decoupling and analytic direct kinematics")
  Member "definition sets for the direct kinematics of parallel manipulators":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "non singular assembly mode changing trajectories in the workspace for the 3 rps parallel robot")
  Member "an algorithm for computing cusp points in the joint space of 3 rpr parallel manipulators":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "a study of the singularity locus in the joint space of planar parallel manipulators special focus on cusps and nodes")
  Member "degeneracy study of the forward kinematics of planar 3 rpr parallel manipulators":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "cusp points in the parameter space of degenerate 3 rpr planar parallel manipulators")
  Member "singular curves and cusp points in the joint space of 3 rpr parallel manipulators":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "singular surfaces and cusps in symmetric planar 3 rpr manipulators")
  Member "the kinematic analysis of a symmetrical three degree of freedom planar parallel manipulator":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "kinetostatic performance of a planar parallel mechanism with variable actuation")
  Member "workspace and assembly modes in fully parallel manipulators a descriptive study":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "singular surfaces and cusps in symmetric planar 3 rpr manipulators")

Question: Please tell me which class the source paper 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)