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: "data access for ligo on the osg"
  Abstract: During 2015 and 2016, the Laser Interferometer Gravitational-Wave Observatory (LIGO) conducted a three-month observing campaign. These observations delivered the first direct detection of gravitational waves from binary black hole mergers. To search for these signals, the LIGO Scientific Collaboration uses the PyCBC search pipeline. To deliver science results in a timely manner, LIGO collaborated with the Open Science Grid (OSG) to distribute the required computation across a series of dedicated, opportunistic, and allocated resources. To deliver the petabytes necessary for such a large-scale computation, our team deployed a distributed data access infrastructure based on the XRootD server suite and the CernVM File System (CVMFS). This data access strategy grew from simply accessing remote storage to a POSIX-based interface underpinned by distributed, secure caches across the OSG.

Connected through hyperedge HE-1 (induced by source paper "supporting high performance and high throughput computing for experimental science"):
  with members:
    - "container solutions for hpc systems a case study of using shifter on blue waters"
    - "real time regression analysis with deep convolutional neural networks"
    - "boss ldg a novel computational framework that brings together blue waters open science grid shifter and the ligo data grid to accelerate gravitational wave discovery"
    - "workload analysis of blue waters"

Connected through hyperedge HE-2 (induced by source paper "scitokens capability based secure access to remote scientific data"):
  with members:
    - "flexible session management in a distributed environment"
    - "security for grid services"

Connected through hyperedge HE-3 (induced by source paper "container solutions for hpc systems a case study of using shifter on blue waters"):
  with members:
    - "boss ldg a novel computational framework that brings together blue waters open science grid shifter and the ligo data grid to accelerate gravitational wave discovery"

Connected through hyperedge HE-4 (induced by source paper "boss ldg a novel computational framework that brings together blue waters open science grid shifter and the ligo data grid to accelerate gravitational wave discovery"):
  with members:
    - "workload analysis of blue waters"

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)