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: "euclidean greedy drawings of trees"
  Abstract: Greedy embedding (or drawing) is a simple and efficient strategy to route messages in wireless sensor networks. For each source-destination pair of nodes s, t in a greedy embedding there is always a neighbor u of s that is closer to t according to some distance metric. The existence of greedy embeddings in the Euclidean plane R^2 is known for certain graph classes such as 3-connected planar graphs. We completely characterize the trees that admit a greedy embedding in R^2. This answers a question by Angelini et al. (Graph Drawing 2009) and is a further step in characterizing the graphs that admit Euclidean greedy embeddings.

Connected through hyperedge HE-1 (induced by source paper "drawing graphs as spanners"):
  with members:
    - "on plane constrained bounded degree spanners"
    - "optimal monotone drawings of trees"
    - "strongly monotone drawings of planar graphs"
    - "on planar greedy drawings of 3 connected planar graphs"
    - "on monotone drawings of trees"
    - "lower bounds on the dilation of plane spanners"
    - "recognition and complexity of point visibility graphs"
    - "on self approaching and increasing chord drawings of 3 connected planar graphs"

Connected through hyperedge HE-2 (induced by source paper "on the area requirements of planar greedy drawings of triconnected planar graphs"):
  with members:
    - "angle monotone paths in non obtuse triangulations"
    - "gabriel triangulations and angle monotone graphs local routing and recognition"
    - "on planar greedy drawings of 3 connected planar graphs"
    - "on self approaching and increasing chord drawings of 3 connected planar graphs"
    - "increasing chord graphs on point sets"
    - "self approaching graphs"
    - "succinct greedy geometric routing in the euclidean plane"

Connected through hyperedge HE-3 (induced by source paper "greedy rectilinear drawings"):
  with members:
    - "solving linear programs in the current matrix multiplication time"
    - "on planar greedy drawings of 3 connected planar graphs"
    - "on self approaching and increasing chord drawings of 3 connected planar graphs"
    - "self approaching graphs"
    - "succinct greedy geometric routing in the euclidean plane"

Connected through hyperedge HE-4 (induced by source paper "on planar greedy drawings of 3 connected planar graphs"):
  with members:
    - "strongly monotone drawings of planar graphs"
    - "drawing planar graphs with many collinear vertices"
    - "gabriel triangulations and angle monotone graphs local routing and recognition"
    - "on monotone drawings of trees"
    - "on self approaching and increasing chord drawings of 3 connected planar graphs"
    - "increasing chord graphs on point sets"
    - "self approaching graphs"
    - "succinct greedy geometric routing in the euclidean plane"

Connected through hyperedge HE-5 (induced by source paper "strongly monotone drawings of planar graphs"):
  with members:
    - "on monotone drawings of trees"
    - "on self approaching and increasing chord drawings of 3 connected planar graphs"
    - "increasing chord graphs on point sets"
    - "monotone grid drawings of planar graphs"

Connected through hyperedge HE-6 (induced by source paper "on monotone drawings of trees"):
  with members:
    - "strongly monotone drawings of planar graphs"
    - "on self approaching and increasing chord drawings of 3 connected planar graphs"
    - "self approaching graphs"
    - "monotone grid drawings of planar graphs"
    - "trees with convex faces and optimal angles"

Connected through hyperedge HE-7 (induced by source paper "on self approaching and increasing chord drawings of 3 connected planar graphs"):
  with members:
    - "on monotone drawings of trees"
    - "increasing chord graphs on point sets"
    - "self approaching graphs"
    - "succinct greedy geometric routing in the euclidean plane"

Connected through hyperedge HE-8 (induced by source paper "self approaching graphs"):
  with members:
    - "succinct greedy geometric routing in the euclidean plane"
    - "sparse geometric graphs with small dilation"

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.CG(Computational Geometry)