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: "implementing adaptive ensemble biomolecular applications at scale"
  Abstract: Many scientific problems require multiple distinct computational tasks to be executed in order to achieve a desired solution. Novel approaches focus on leveraging intermediate data to adapt the application to study larger problems, longer time scales and to engineer better fidelity in the modeling of complex phenomena. In this paper, we describe types of application adaptivity in such applications, develop abstractions to specify application adaptivity, and challenges in implementing them in software tools. We describe the design and enhancement of Ensemble Toolkit to support adaptivity, characterize the adaptivity overhead, validate the implementation of two exemplar molecular dynamics algorithms: expanded ensemble and markov state modeling, and analyze the results of running the expanded ensemble algorithm at production scale. We discuss novel computational capabilities enabled by abstractions for adaptive ensemble applications and the scientific advantages arising thereof.

Connected through hyperedge HE-1 (induced by source paper "rapid concurrent and adaptive extreme scale binding free energy calculation"):
  with members:
    - "design and performance characterization of radical pilot on titan"

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.CE(Computational Engineering, Finance, and Science)