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: "a coalgebraic treatment of conditional transition systems with upgrades"
  Abstract: We consider conditional transition systems, that model software product lines#N#with upgrades, in a coalgebraic setting. By using Birkhoff's duality for#N#distributive lattices, we derive two equivalent Kleisli categories in which#N#these coalgebras live: Kleisli categories based on the reader and on the#N#so-called lattice monad over $\mathsf{Poset}$. We study two different functors#N#describing the branching type of the coalgebra and investigate the resulting#N#behavioural equivalence. Furthermore we show how an existing algorithm for#N#coalgebra minimisation can be instantiated to derive behavioural equivalences#N#in this setting.

Connected through hyperedge HE-1 (induced by source paper "conditional transition systems with upgrades"):
  with members:
    - "paws a tool for the analysis of weighted systems"
    - "probabilistic model checking for energy analysis in software product lines"

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)