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: "grid architecture through a public cluster"
  Abstract: An architecture to enable some blocks consisting of several nodes in a public cluster connected to different grid collaborations is introduced. It is realized by inserting a web-service in addition to the standard Globus Toolkit. The new web-service performs two main tasks : authenticate the digital certificate contained in an incoming requests and forward it to the designated block. The appropriate block is mapped with the user name of the blockpsilas owner contained in the digital certificate. It is argued that this algorithm opens an opportunity for any blocks in a public cluster to join various global grids.

Connected through hyperedge HE-1 (induced by source paper "public infrastructure for monte carlo simulation publicmc batan"):
  with members:
    - "multi and independent block approach in public cluster"
    - "open and free cluster for public"
    - "web based interface in public cluster"
    - "gridscape a tool for the creation of interactive and dynamic grid testbed web portals"

Connected through hyperedge HE-2 (induced by source paper "openpc a toolkit for public cluster with full ownership"):
  with members:
    - "resource allocation in public cluster with extended optimization algorithm"
    - "multi and independent block approach in public cluster"
    - "open and free cluster for public"
    - "gridscape a tool for the creation of interactive and dynamic grid testbed web portals"

Connected through hyperedge HE-3 (induced by source paper "microcontroller based distributed and networked control system for public cluster"):
  with members:
    - "resource allocation in public cluster with extended optimization algorithm"
    - "open and free cluster for public"
    - "web based interface in public cluster"

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)