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: "herding cats modelling simulation testing and data mining for weak memory"
  Abstract: We propose an axiomatic generic framework for modelling weak memory. We show how to instantiate this framework for SC, TSO, C++ restricted to release-acquire atomics, and Power. For Power, we compare our model to a preceding operational model in which we found a flaw. To do so, we define an operational model that we show equivalent to our axiomatic model. #R##N#We also propose a model for ARM. Our testing on this architecture revealed a behaviour later acknowledged as a bug by ARM, and more recently 33 additional anomalies. #R##N#We offer a new simulation tool, called herd, which allows the user to specify the model of his choice in a concise way. Given a specification of a model, the tool becomes a simulator for that model. The tool relies on an axiomatic description; this choice allows us to outperform all previous simulation tools. Additionally, we confirm that verification time is vastly improved, in the case of bounded model-checking. #R##N#Finally, we put our models in perspective, in the light of empirical data obtained by analysing the C and C++ code of a Debian Linux distribution. We present our new analysis tool, called mole, which explores a piece of code to find the weak memory idioms that it uses.

Connected through hyperedge HE-1 (induced by source paper "realitycheck bringing modularity hierarchy and abstraction to automated microarchitectural memory consistency verification"):
  with members:
    - "constructing a weak memory model"
    - "tricheck memory model verification at the trisection of software hardware and isa"

Connected through hyperedge HE-2 (induced by source paper "pridemm a solver for relaxed memory models"):
  with members:
    - "an achilles heel of term resolution"
    - "on the quest for an acyclic graph"
    - "on thin air reads towards an event structures model of relaxed memory"
    - "overhauling sc atomics in c11 and opencl"
    - "syntax and analytic semantics of lisa"
    - "q resolution with generalized axioms"
    - "ic3 modulo theories via implicit predicate abstraction"

Connected through hyperedge HE-3 (induced by source paper "bridging the gap between programming languages and hardware weak memory models"):
  with members:
    - "constructing a weak memory model"
    - "the semantics of transactions and weak memory in x86 power arm and c"
    - "on thin air reads towards an event structures model of relaxed memory"
    - "counterexamples and proof loophole for the c c to power and armv7 trailing sync compiler mappings"

Connected through hyperedge HE-4 (induced by source paper "reconciling event structures with modern multiprocessors"):
  with members:
    - "bridging the gap between programming languages and hardware weak memory models"
    - "on thin air reads towards an event structures model of relaxed memory"
    - "operational aspects of c c concurrency"

Connected through hyperedge HE-5 (induced by source paper "robustness against transactional causal consistency"):
  with members:
    - "causal consistency beyond memory"
    - "on verifying causal consistency"
    - "robustness against power is pspace complete"

Connected through hyperedge HE-6 (induced by source paper "instruction level abstraction ila a uniform specification for system on chip soc verification"):
  with members:
    - "tricheck memory model verification at the trisection of software hardware and isa"
    - "programming heterogeneous systems from an image processing dsl"

Connected through hyperedge HE-7 (induced by source paper "constructing a weak memory model"):
  with members:
    - "weak memory models with matching axiomatic and operational definitions"
    - "weak memory models balancing definitional simplicity and implementation flexibility"
    - "tricheck memory model verification at the trisection of software hardware and isa"
    - "overhauling sc atomics in c11 and opencl"

Connected through hyperedge HE-8 (induced by source paper "a load buffer semantics for total store ordering"):
  with members:
    - "stateless model checking for power"
    - "stateless model checking for tso and pso"
    - "robustness against power is pspace complete"

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)