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: "leader election and shape formation with self organizing programmable matter"
  Abstract: We consider programmable matter consisting of simple computational elements, called particles, that can establish and release bonds and can actively move in a self-organized way, and we investigate the feasibility of solving fundamental problems relevant for programmable matter. As a suitable model for such self-organizing particle systems, we will use a generalization of the geometric amoebot model first proposed in SPAA 2014. Based on the geometric model, we present efficient local-control algorithms for leader election and line formation requiring only particles with constant size memory, and we also discuss the limitations of solving these problems within the general amoebot model.

Connected through hyperedge HE-1 (induced by source paper "mobile ram and shape formation by programmable particles"):
  with members:
    - "a stochastic approach to shortcut bridging in programmable matter"
    - "on the runtime of universal coating for programmable matter"
    - "on the transformation capability of feasible mechanisms for programmable matter"
    - "turingmobile a turing machine of oblivious mobile robots with limited visibility and its applications"
    - "line recovery by programmable particles"
    - "shape formation by programmable particles"
    - "universal coating for programmable matter"
    - "terminating distributed construction of shapes and patterns in a fair solution of automata"

Connected through hyperedge HE-2 (induced by source paper "connected assembly and reconfiguration by finite automata"):
  with members:
    - "on the runtime of universal coating for programmable matter"
    - "cadbots algorithmic aspects of manipulating programmable matter with finite automata"
    - "shape formation by programmable particles"
    - "improved leader election for self organizing programmable matter"
    - "universal coating for programmable matter"
    - "new geometric algorithms for fully connected staged self assembly"
    - "an algorithmic framework for shape formation problems in self organizing particle systems"
    - "universal computation with arbitrary polyomino tiles in non cooperative self assembly"

Connected through hyperedge HE-3 (induced by source paper "deterministic leader election in programmable matter"):
  with members:
    - "distributed leader election and computation of local identifiers for programmable matter"
    - "a stochastic approach to shortcut bridging in programmable matter"
    - "on the runtime of universal coating for programmable matter"
    - "convex hull formation for programmable matter"
    - "line recovery by programmable particles"
    - "shape formation by programmable particles"
    - "improved leader election for self organizing programmable matter"
    - "universal coating for programmable matter"

Connected through hyperedge HE-4 (induced by source paper "on the runtime of universal coating for programmable matter"):
  with members:
    - "improved leader election for self organizing programmable matter"
    - "universal coating for programmable matter"
    - "an algorithmic framework for shape formation problems in self organizing particle systems"
    - "parallel computation using active self assembly"
    - "simple and efficient local codes for distributed stable network construction"
    - "active self assembly of algorithmic shapes and patterns in polylogarithmic time"
    - "intrinsic universality and the computational power of self assembly"
    - "physarum can compute shortest paths"

Connected through hyperedge HE-5 (induced by source paper "distributed leader election and computation of local identifiers for programmable matter"):
  with members:
    - "on the runtime of universal coating for programmable matter"
    - "line recovery by programmable particles"
    - "shape formation by programmable particles"
    - "improved leader election for self organizing programmable matter"
    - "universal coating for programmable matter"
    - "an algorithmic framework for shape formation problems in self organizing particle systems"

Connected through hyperedge HE-6 (induced by source paper "a stochastic approach to shortcut bridging in programmable matter"):
  with members:
    - "improved leader election for self organizing programmable matter"
    - "universal coating for programmable matter"
    - "a markov chain algorithm for compression in self organizing particle systems"
    - "parallel computation using active self assembly"
    - "active self assembly of algorithmic shapes and patterns in polylogarithmic time"
    - "intrinsic universality and the computational power of self assembly"

Connected through hyperedge HE-7 (induced by source paper "shape formation by programmable particles"):
  with members:
    - "on the runtime of universal coating for programmable matter"
    - "on the transformation capability of feasible mechanisms for programmable matter"
    - "line recovery by programmable particles"
    - "improved leader election for self organizing programmable matter"
    - "universal coating for programmable matter"
    - "a markov chain algorithm for compression in self organizing particle systems"
    - "terminating distributed construction of shapes and patterns in a fair solution of automata"
    - "an algorithmic framework for shape formation problems in self organizing particle systems"

Connected through hyperedge HE-8 (induced by source paper "improved leader election for self organizing programmable matter"):
  with members:
    - "on the runtime of universal coating for programmable matter"
    - "a markov chain algorithm for compression in self organizing particle systems"
    - "an algorithmic framework for shape formation problems in self organizing particle systems"
    - "parallel computation using active self assembly"
    - "fast algorithmic self assembly of simple shapes using random agitation"
    - "active self assembly of algorithmic shapes and patterns in polylogarithmic time"
    - "intrinsic universality and the computational power of self assembly"
    - "a distributed algorithm for gathering many fat mobile robots in the plane"

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.ET(Emerging Technologies)