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: "improved leader election for self organizing programmable matter"
  Abstract: We consider programmable matter that consists of computationally limited devices (which we call particles) that are able to self-organize in order to achieve some collective goal without the need for central control or external intervention. We use the geometric amoebot model to describe such self-organizing particle systems, which defines how particles can actively move and establish or release bonds with one another. Under this model, we investigate the feasibility of solving fundamental problems relevant to programmable matter. In this paper, we present an efficient local-control algorithm which solves the leader election problem in O(n) asynchronous rounds with high probability, where n is the number of particles in the system. Our algorithm relies only on local information (e.g., particles do not have unique identifiers, any knowledge of n, or any sort of global coordinate system), and requires only constant memory per particle.

Connected through hyperedge HE-1 (induced by source paper "simulation of programmable matter systems using active tile based self assembly"):
  with members:
    - "a stochastic approach to shortcut bridging in programmable matter"
    - "the non cooperative tile assembly model is not intrinsically universal or capable of bounded turing machine simulation"
    - "universal coating for programmable matter"
    - "a markov chain algorithm for compression in self organizing particle systems"
    - "computing in continuous space with self assembling polygonal tiles"
    - "universal computation with arbitrary polyomino tiles in non cooperative self assembly"
    - "the power of duples in self assembly it s not so hip to be square"
    - "the two handed tile assembly model is not intrinsically universal"

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"
    - "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"
    - "leader election and shape formation with self organizing programmable matter"
    - "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"
    - "universal coating for programmable matter"
    - "a markov chain algorithm for compression in self organizing particle systems"

Connected through hyperedge HE-4 (induced by source paper "on the runtime of universal coating for programmable matter"):
  with members:
    - "universal coating for programmable matter"
    - "an algorithmic framework for shape formation problems in self organizing particle systems"
    - "leader election and shape formation with self organizing programmable matter"
    - "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"
    - "universal coating for programmable matter"
    - "an algorithmic framework for shape formation problems in self organizing particle systems"
    - "leader election and shape formation with self organizing programmable matter"

Connected through hyperedge HE-6 (induced by source paper "a stochastic approach to shortcut bridging in programmable matter"):
  with members:
    - "universal coating for programmable matter"
    - "a markov chain algorithm for compression in self organizing particle systems"
    - "leader election and shape formation with self organizing programmable matter"
    - "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 "convex hull formation for programmable matter"):
  with members:
    - "on the runtime of universal coating for programmable matter"
    - "collaborative computation in self organizing particle systems"
    - "universal coating for programmable matter"
    - "active self assembly of algorithmic shapes and patterns in polylogarithmic time"

Connected through hyperedge HE-8 (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"
    - "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"
    - "leader election and shape formation with self organizing programmable matter"

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)