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: "low degree spanning trees of small weight"
  Abstract: Given $n$ points in the plane, the degree-$K$ spanning-tree problem asks for a spanning tree of minimum weight in which the degree of each vertex is at most $K$. This paper addresses the problem of computing low-weight degree-$K$ spanning trees for $K>2$. It is shown that for an arbitrary collection of $n$ points in the plane, there exists a spanning tree of degree 3 whose weight is at most 1.5 times the weight of a minimum spanning tree. It is shown that there exists a spanning tree of degree 4 whose weight is at most 1.25 times the weight of a minimum spanning tree. These results solve open problems posed by Papadimitriou and Vazirani. Moreover, if a minimum spanning tree is given as part of the input, the trees can be computed in $O(n)$ time. #R##N#The results are generalized to points in higher dimensions. It is shown that for any $d \ge 3$, an arbitrary collection of points in $\Re^d$ contains a spanning tree of degree 3 whose weight is at most 5/3 times the weight of a minimum spanning tree. This is the first paper that achieves factors better than 2 for these problems.

Connected through hyperedge HE-1 (induced by source paper "euclidean bottleneck bounded degree spanning tree ratios"):
  with members:
    - "degree bounded bottleneck spanning trees in three dimensions"
    - "on improved bounds for bounded degree spanning trees for points in arbitrary dimension"
    - "approximating the bottleneck plane perfect matching of a point set"

Connected through hyperedge HE-2 (induced by source paper "5 4 approximation for symmetric tsp"):
  with members:
    - "13 9 approximation for graphic tsp"

Connected through hyperedge HE-3 (induced by source paper "bounded angle spanning tree modeling networks with angular constraints"):
  with members:
    - "ice creams and wedge graphs"
    - "symmetric connectivity with directional antennas"
    - "maximizing maximal angles for plane straight line graphs"

Connected through hyperedge HE-4 (induced by source paper "on improved bounds for bounded degree spanning trees for points in arbitrary dimension"):
  with members:
    - "a bound on the sum of weighted pairwise distances of points constrained to balls"
    - "a network flow technique for finding low weight bounded degree spanning trees"

Connected through hyperedge HE-5 (induced by source paper "the mst of symmetric disk graphs in arbitrary metrics is light"):
  with members:
    - "relaxed spanners for directed disk graphs"
    - "local approximation schemes for topology control"

Connected through hyperedge HE-6 (induced by source paper "a network flow technique for finding low weight bounded degree spanning trees"):
  with members:
    - "balancing minimum spanning trees and shortest path trees"

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)