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: "simulation of quantum many body systems on amazon cloud"
  Abstract: Quantum many-body systems (QMBs) are some of the most challenging physical systems to simulate numerically. Methods involving tensor networks (TNs) have proven to be viable alternatives to algorithms such as quantum Monte Carlo or simulated annealing, but have been applicable only for systems of either small size or simple geometry due to the NP-hardness of TN contraction. In this paper, we present a heuristic improvement of TN contraction that reduces the computing time, the amount of memory, and the communication time. We demonstrate our heuristic with the Ising model on powerful memory optimized Amazon Web Services (AWS) x1.32x large EC2 instances, showing the viability of cloud computing for scientific applications.

Connected through hyperedge HE-1 (induced by source paper "carving width and contraction trees for tensor networks"):
  with members:
    - "benchmarking treewidth as a practical component of tensor network simulations"
    - "on the satisfiability of quantum circuits of small treewidth"
    - "designing multi commodity flow 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.DC(Distributed, Parallel, and Cluster Computing)