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: "process ordering in a process calculus for spatially explicit ecological models"
  Abstract: In this paper we extend PALPS, a process calculus proposed for the spatially-explicit individual-based modeling of ecological systems, with the notion of a policy. A policy is an entity for specifying orderings between the different activities within a system. It is defined externally to a PALPS model as a partial order which prescribes the precedence order between the activities of the individu- als of which the model is comprised. The motivation for introducing policies is twofold: one the one hand, policies can help to reduce the state-space of a model, on the other hand, they are useful for exploring the behavior of an ecosystem under different assumptions on the ordering of events within the system. To take account of policies, we refine the semantics of PALPS via a transition relation which prunes away executions that do not respect the defined policy. Furthermore, we propose a translation of PALPS into the probabilistic model checker PRISM . We illustrate our framework by applying PRISM on PALPS models with policies for conducting simulation and reachability analysis.

Connected through hyperedge HE-1 (induced by source paper "a general overview of formal languages for individual based modelling of ecosystems"):
  with members:
    - "current trends and future research directions for interactive music"
    - "assembling sequences of dna using an on line algorithm based on debruijn graphs"
    - "probabilistic extension to the concurrent constraint factor oracle model for music improvisation"
    - "mela modelling in ecology with location attributes"
    - "mean field semantics for a process calculus for spatially explicit ecological models"
    - "a model for interactive scores with temporal constraints and conditional branching"
    - "structured interactive music scores"
    - "a spatial calculus of wrapped compartments"

Connected through hyperedge HE-2 (induced by source paper "current trends and future research directions for interactive music"):
  with members:
    - "towards a correct and efficient implementation of simulation and verification tools for probabilistic ntcc"
    - "on line assembling mitochondrial dna from de novo transcriptome"
    - "assembling sequences of dna using an on line algorithm based on debruijn graphs"
    - "mean field semantics for a process calculus for spatially explicit ecological models"
    - "a model for interactive scores with temporal constraints and conditional branching"
    - "structured interactive music scores"
    - "an extension of interactive scores for multimedia scenarios with temporal relations for micro and macro controls"

Connected through hyperedge HE-3 (induced by source paper "concurrent constraint conditional branching timed interactive scores"):
  with members:
    - "a model for interactive scores with temporal constraints and conditional branching"
    - "structured interactive music scores"
    - "an extension of interactive scores for multimedia scenarios with temporal relations for micro and macro controls"

Connected through hyperedge HE-4 (induced by source paper "modeling temporal constraints for a system of interactive scores"):
  with members:
    - "mean field semantics for a process calculus for spatially explicit ecological models"
    - "structured interactive music scores"
    - "an extension of interactive scores for multimedia scenarios with temporal relations for micro and macro controls"

Connected through hyperedge HE-5 (induced by source paper "mean field semantics for a process calculus for spatially explicit ecological models"):
  with members:
    - "modelling the dynamics of an aedes albopictus population"
    - "sabre a tool for stochastic analysis of biochemical reaction networks"

Connected through hyperedge HE-6 (induced by source paper "ntccrt a concurrent constraint framework for real time interaction extended version"):
  with members:
    - "mean field semantics for a process calculus for spatially explicit ecological models"
    - "a model for interactive scores with temporal constraints and conditional branching"
    - "structured interactive music scores"
    - "an extension of interactive scores for multimedia scenarios with temporal relations for micro and macro controls"
    - "efficient constraint propagation engines"

Connected through hyperedge HE-7 (induced by source paper "towards non threaded concurrent constraint programming for implementing multimedia interaction systems"):
  with members:
    - "mean field semantics for a process calculus for spatially explicit ecological models"
    - "a model for interactive scores with temporal constraints and conditional branching"
    - "structured interactive music scores"
    - "an extension of interactive scores for multimedia scenarios with temporal relations for micro and macro controls"
    - "efficient constraint propagation engines"

Connected through hyperedge HE-8 (induced by source paper "an extension of interactive scores for multimedia scenarios with temporal relations for micro and macro controls"):
  with members:
    - "mean field semantics for a process calculus for spatially explicit ecological models"
    - "a model for interactive scores with temporal constraints and conditional branching"
    - "structured interactive music scores"

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)