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: "open and free cluster for public"
  Abstract: We introduce the LIPI Public Cluster, the first parallel machine facility fully open for public and for free in Indonesia and surrounding countries. In this paper, we focus on explaining our globally new concept on open cluster, and how to realize and manage it to meet the users needs. We show that after 2 years trial running and several upgradings, the Public Cluster performs well and is able to fulfil all requirements as expected.

Connected through hyperedge HE-1 (induced by source paper "public infrastructure for monte carlo simulation publicmc batan"):
  with members:
    - "grid architecture through a public cluster"
    - "multi and independent block approach in public cluster"
    - "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:
    - "grid architecture through a public cluster"
    - "resource allocation in public cluster with extended optimization algorithm"
    - "multi and independent block approach in public cluster"
    - "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:
    - "grid architecture through a public cluster"
    - "resource allocation in public cluster with extended optimization algorithm"
    - "web based interface in public cluster"

Connected through hyperedge HE-4 (induced by source paper "grid architecture through a public cluster"):
  with members:
    - "real time control and monitoring system for lipi s public cluster"
    - "resource allocation in public cluster with extended optimization algorithm"
    - "public cluster parallel machine with multi block approach"
    - "web based interface in public cluster"

Connected through hyperedge HE-5 (induced by source paper "multi and independent block approach in public cluster"):
  with members:
    - "real time control and monitoring system for lipi s public cluster"
    - "resource allocation in public cluster with extended optimization algorithm"
    - "public cluster parallel machine with multi block approach"

Connected through hyperedge HE-6 (induced by source paper "web based interface in public cluster"):
  with members:
    - "resource allocation in public cluster with extended optimization algorithm"
    - "multi and independent block approach in public cluster"
    - "public cluster parallel machine with multi block approach"

Connected through hyperedge HE-7 (induced by source paper "real time control and monitoring system for lipi s public cluster"):
  with members:
    - "public cluster parallel machine with multi block approach"
    - "web based interface in public cluster"

Connected through hyperedge HE-8 (induced by source paper "resource allocation in public cluster with extended optimization algorithm"):
  with members:
    - "public cluster parallel machine with multi block approach"
    - "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)