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: "bin packing with general cost structures"
  Abstract: Following the work of Anily et al., we consider a variant of bin packing, called "bin packing with general cost structures" (GCBP) and design an asymptotic fully polynomial time approximation scheme (AFPTAS) for this problem. In the classic bin packing problem, a set of one-dimensional items is to be assigned to subsets of total size at most 1, that is, to be packed into unit sized bins. However, in GCBP, the cost of a bin is not 1 as in classic bin packing, but it is a non-decreasing and concave function of the number of items packed in it, where the cost of an empty bin is zero. The construction of the AFPTAS requires novel techniques for dealing with small items, which are developed in this work. In addition, we develop a fast approximation algorithm which acts identically for all non-decreasing and concave functions, and has an asymptotic approximation ratio of 1.5 for all functions simultaneously.

Connected through hyperedge HE-1 (induced by source paper "multitype integer monoid optimization and applications"):
  with members:
    - "a parameterized strongly polynomial algorithm for block structured integer programs"
    - "faster algorithms for integer programs with block structure"
    - "empowering the configuration ip new ptas results for scheduling with setups times"
    - "near linear time algorithm for n fold ilps via color coding"
    - "on integer programming and convolution"
    - "on the graver basis of block structured integer programming"
    - "scheduling meets n fold integer programming"
    - "proximity results and faster algorithms for integer programming using the steinitz lemma"

Connected through hyperedge HE-2 (induced by source paper "a faster fptas for knapsack problem with cardinality constraint"):
  with members:
    - "a faster fptas for the unbounded knapsack problem"
    - "curvature and optimal algorithms for learning and minimizing submodular functions"
    - "optimal source based filtering of malicious traffic"
    - "submodular approximation sampling based algorithms and lower bounds"
    - "hybrid rounding techniques for knapsack problems"

Connected through hyperedge HE-3 (induced by source paper "sequential resource allocation with positional costs"):
  with members:
    - "polynomiality for bin packing with a constant number of item types"

Connected through hyperedge HE-4 (induced by source paper "set covering with ordered replacement additive and multiplicative gaps"):
  with members:
    - "afptas results for common variants of bin packing a new method for handling the small items"
    - "bin packing via discrepancy of permutations"

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)