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: "towards slime mould chemical sensor mapping chemical inputs onto electrical potential dynamics of physarum polycephalum"
  Abstract: We experimentally derived a unique one-to-one mapping between a range of selected bioactive chemicals and patterns of oscillations of the slime mould's extacellular electrical potential.

Connected through hyperedge HE-1 (induced by source paper "discovering boolean gates in slime mould"):
  with members:
    - "slime mould memristors"
    - "practical circuits with physarum wires"
    - "slime mould logic gates based on frequency changes of electrical potential oscillation"
    - "slime mould electronic oscillators"
    - "towards slime mould colour sensor recognition of colours by physarum polycephalum"
    - "slime mould tactile sensor"
    - "are complex systems hard to evolve"

Connected through hyperedge HE-2 (induced by source paper "thirty eight things to do with live slime mould"):
  with members:
    - "material approximation of data smoothing and spline curves inspired by slime mould"
    - "on hybrid circuits exploiting thermistive properties of slime mould"
    - "slime mould electronic oscillators"
    - "bio imitation of mexican migration routes to the usa with slime mould on 3d terrains"
    - "towards slime mould colour sensor recognition of colours by physarum polycephalum"
    - "slime mould tactile sensor"
    - "computation of the travelling salesman problem by a shrinking blob"
    - "on creativity of slime mould"

Connected through hyperedge HE-3 (induced by source paper "quantitative transformation for implementation of adder circuits in physical systems"):
  with members:
    - "the emergence and dynamical evolution of complex transport networks from simple low level behaviours"
    - "physarum chip developments in growing computers from slime mould"
    - "sensory fusion in physarum polycephalum and implementing multi sensory functional computation"
    - "is spiking logic the route to memristor based computers"
    - "slime mould logic gates based on frequency changes of electrical potential oscillation"
    - "towards slime mould colour sensor recognition of colours by physarum polycephalum"
    - "slime mould tactile sensor"
    - "boolean logic gate design principles in unconventional computers an nmr case study"

Connected through hyperedge HE-4 (induced by source paper "practical circuits with physarum wires"):
  with members:
    - "quantitative transformation for implementation of adder circuits in physical systems"
    - "physarum chip developments in growing computers from slime mould"
    - "sensory fusion in physarum polycephalum and implementing multi sensory functional computation"
    - "slime mould logic gates based on frequency changes of electrical potential oscillation"
    - "slime mould electronic oscillators"
    - "towards plant wires"
    - "routing of physarum polycephalum signals using simple chemicals"
    - "slime mould tactile sensor"

Connected through hyperedge HE-5 (induced by source paper "slime mould memristors"):
  with members:
    - "is spiking logic the route to memristor based computers"
    - "towards slime mould colour sensor recognition of colours by physarum polycephalum"
    - "slime mould tactile sensor"
    - "evolution of plastic learning in spiking networks via memristive connections"
    - "slime mould computes planar shapes"

Connected through hyperedge HE-6 (induced by source paper "on hybrid circuits exploiting thermistive properties of slime mould"):
  with members:
    - "slime mould memristors"
    - "slime mould logic gates based on frequency changes of electrical potential oscillation"
    - "slime mould electronic oscillators"
    - "towards slime mould colour sensor recognition of colours by physarum polycephalum"
    - "slime mould tactile sensor"

Connected through hyperedge HE-7 (induced by source paper "on the role of the plasmodial cytoskeleton in facilitating intelligent behaviour in slime mould physarum polycephalum"):
  with members:
    - "slime mould inspired generalised voronoi diagrams with repulsive fields"
    - "the emergence and dynamical evolution of complex transport networks from simple low level behaviours"
    - "slime mould tactile sensor"
    - "computation of the travelling salesman problem by a shrinking blob"

Connected through hyperedge HE-8 (induced by source paper "automated guidance of collective movement in a multi agent model of physarum polycephalum"):
  with members:
    - "a morphological adaptation approach to path planning inspired by slime mould"
    - "slime mould tactile sensor"
    - "towards physarum robots computing and manipulating on water surface"

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)