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: "on the sum of squares algorithm for bin packing"
  Abstract: In this paper we present a theoretical analysis of the deterministic on-line {\em Sum of Squares} algorithm ($SS$) for bin packing introduced and studied experimentally in \cite{CJK99}, along with several new variants. $SS$ is applicable to any instance of bin packing in which the bin capacity $B$ and item sizes $s(a)$ are integral (or can be scaled to be so), and runs in time $O(nB)$. It performs remarkably well from an average case point of view: For any discrete distribution in which the optimal expected waste is sublinear, $SS$ also has sublinear expected waste. For any discrete distribution where the optimal expected waste is bounded, $SS$ has expected waste at most $O(\log n)$. In addition, we discuss several interesting variants on $SS$, including a randomized $O(nB\log B)$-time on-line algorithm $SS^*$, based on $SS$, whose expected behavior is essentially optimal for all discrete distributions. Algorithm $SS^*$ also depends on a new linear-programming-based pseudopolynomial-time algorithm for solving the NP-hard problem of determining, given a discrete distribution $F$, just what is the growth rate for the optimal expected waste. This article is a greatly expanded version of the conference paper \cite{sumsq2000}.

Connected through hyperedge HE-1 (induced by source paper "orl reinforcement learning benchmarks for online stochastic optimization problems"):
  with members:
    - "learning dexterous in hand manipulation"
    - "distributed prioritized experience replay"
    - "efficient large scale fleet management via multi agent deep reinforcement learning"
    - "rllib abstractions for distributed reinforcement learning"
    - "learning combinatorial optimization algorithms over graphs"
    - "a deep q network for the beer game a deep reinforcement learning algorithm to solve inventory optimization problems"
    - "proximal policy optimization algorithms"
    - "neural combinatorial optimization with reinforcement learning"

Connected through hyperedge HE-2 (induced by source paper "an all around near optimal solution for the classic bin packing problem"):
  with members:
    - "on the worst case performance of the sum of squares algorithm for bin packing"

Connected through hyperedge HE-3 (induced by source paper "first come first served for online slot allocation and huffman coding"):
  with members:
    - "online stochastic bin packing"
    - "huffman coding with letter costs a linear time approximation scheme"
    - "on line paging against adversarially biased random inputs"

Connected through hyperedge HE-4 (induced by source paper "inducing the lcp array"):
  with members:
    - "optimal succinctness for range minimum queries"

Connected through hyperedge HE-5 (induced by source paper "a dense hierarchy of sublinear time approximation schemes for bin packing"):
  with members:
    - "on the closest string and substring problems"

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)