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: "the lattice dimension of a graph"
  Abstract: We describe a polynomial time algorithm for, given an undirected graph G, finding the minimum dimension d such that G may be isometrically embedded into the d-dimensional integer lattice Zd.

Connected through hyperedge HE-1 (induced by source paper "steinitz theorems for simple orthogonal polyhedra"):
  with members:
    - "adjacency preserving spatial treemaps"
    - "the complexity of bendless three dimensional orthogonal graph drawing"
    - "orientation constrained rectangular layouts"
    - "area universal rectangular layouts"
    - "isometric diamond subgraphs"
    - "nonorthogonal polyhedra built from rectangles"

Connected through hyperedge HE-2 (induced by source paper "shortest path problem in rectangular complexes of global nonpositive curvature"):
  with members:
    - "computing hulls and centerpoints in positive definite space"

Connected through hyperedge HE-3 (induced by source paper "isometric diamond subgraphs"):
  with members:
    - "recognizing partial cubes in quadratic time"
    - "algorithms for drawing media"

Connected through hyperedge HE-4 (induced by source paper "recognizing partial cubes in quadratic time"):
  with members:
    - "happy endings for flip graphs"
    - "optimal angular resolution for face symmetric drawings"
    - "isometric diamond subgraphs"
    - "upright quad drawing of st planar learning spaces"
    - "algorithms for drawing media"
    - "algorithms for media"

Connected through hyperedge HE-5 (induced by source paper "upright quad drawing of st planar learning spaces"):
  with members:
    - "happy endings for flip graphs"
    - "delta confluent drawings"
    - "algorithms for drawing media"

Connected through hyperedge HE-6 (induced by source paper "algorithms for drawing media"):
  with members:
    - "algorithms for media"

Connected through hyperedge HE-7 (induced by source paper "algorithms for media"):
  with members:
    - "algorithms for drawing media"

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.DS(Data Structures and Algorithms)