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: "simultaneous editing of json objects via operational transformation"
  Abstract: Real-time collaboration among geographically distributed users is becoming increasingly important in our private and professional lives. Operational Transformation (OT) is a well established technique for consistency maintenance in the domain of collaborative text editing. In this paper we expand the scope of OT to support simultaneous editing of shared JSON objects. The presented approach can be used in almost any modern web framework to implement collaboration tools that are, in contrast to popular real-time collaboration tools like Google Docs, no longer restricted to text documents. Alongside with a detailed presentation of the underlying data structures and mechanics we discuss how web applications can be designed to use our extension.

Connected through hyperedge HE-1 (induced by source paper "opsets sequential specifications for replicated datatypes extended version"):
  with members:
    - "verifying strong eventual consistency in distributed systems"

Connected through hyperedge HE-2 (induced by source paper "verifying strong eventual consistency in distributed systems"):
  with members:
    - "a conflict free replicated json datatype"
    - "efficient state based crdts by delta mutation"

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.LO(Logic in Computer Science)