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: "towards mkm in the large modular representation and scalable software architecture"
  Abstract: MKM has been defined as the quest for technologies to manage mathematical knowledge. MKM "in the small" is well-studied, so the real problem is to scale up to large, highly interconnected corpora: "MKM in the large". We contend that advances in two areas are needed to reach this goal. We need representation languages that support incremental processing of all primitive MKM operations, and we need software architectures and implementations that implement these operations scalably on large knowledge bases. #R##N#We present instances of both in this paper: the MMT framework for modular theory-graphs that integrates meta-logical foundations, which forms the base of the next OMDoc version; and TNTBase, a versioned storage system for XML-based document formats. TNTBase becomes an MMT database by instantiating it with special MKM operations for MMT.

Connected through hyperedge HE-1 (induced by source paper "realms a structure for consolidating knowledge about mathematical theories"):
  with members:
    - "theory presentation combinators"
    - "a scalable module system"

Connected through hyperedge HE-2 (induced by source paper "the mmt api a generic mkm system"):
  with members:
    - "a query language for formal mathematical libraries"
    - "a scalable module system"

Connected through hyperedge HE-3 (induced by source paper "a query language for formal mathematical libraries"):
  with members:
    - "a scalable module system"

Connected through hyperedge HE-4 (induced by source paper "a scalable module system"):
  with members:
    - "a universal machine for biform theory graphs"
    - "a query language for formal mathematical libraries"
    - "a foundational view on integration problems"
    - "stexide an integrated development environment for stex collections"

Connected through hyperedge HE-5 (induced by source paper "a foundational view on integration problems"):
  with members:
    - "a scalable module system"

Connected through hyperedge HE-6 (induced by source paper "stexide an integrated development environment for stex collections"):
  with members:
    - "stex a system for flexible formalization of linked data"
    - "dimensions of formality a case study for mkm in software engineering"
    - "publishing math lecture notes as linked data"

Connected through hyperedge HE-7 (induced by source paper "editing knowledge in large mathematical corpora a case study with semantic latex stex"):
  with members:
    - "digital mathematics libraries the good the bad the ugly"
    - "publishing math lecture notes as linked data"

Connected through hyperedge HE-8 (induced by source paper "towards openmath content dictionaries as linked data"):
  with members:
    - "wiki openmath org how it works how you can participate"

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.OH(Other Computer Science)