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: "slime mould memristors"
  Abstract: In laboratory experiments we demonstrate that protoplasmic tubes of acellular slime mould \emph{Physarum polycephalum} show current versus voltage profiles consistent with memristive systems and that the effect is due to the living protoplasm of the mould. This complements previous findings on memristive properties of other living systems (human skin and blood) and contributes to development of self-growing bio-electronic circuits. Distinctive asymmetric V-I curves which were occasionally observed when the internal current is on the same order as the driven current, are well-modelled by the concept of active memristors.

Connected through hyperedge HE-1 (induced by source paper "memristors for the curious outsiders"):
  with members:
    - "a neuromorphic systems approach to in memory computing with non ideal memristive devices from mitigation to exploitation"
    - "hierarchical temporal memory using memristor networks a survey"
    - "thermodynamic ram technology stack"
    - "perspective memcomputing leveraging memory and physics to compute efficiently"
    - "the case for rejecting the memristor as a fundamental circuit element"
    - "vertex coloring of graphs via phase dynamics of coupled oscillatory networks"
    - "polynomial time solution of prime factorization and np complete problems with digital memcomputing machines"
    - "temporal correlation detection using computational phase change memory"

Connected through hyperedge HE-2 (induced by source paper "computers from plants we never made speculations"):
  with members:
    - "discovering boolean gates in slime mould"
    - "simple fluidic digital half adder"
    - "on plant roots logical gates"
    - "towards plant wires"
    - "organic memristor devices for logic elements with memory"
    - "robust soldier crab ball gate"
    - "slime mould computes planar shapes"

Connected through hyperedge HE-3 (induced by source paper "discovering boolean gates in slime mould"):
  with members:
    - "practical circuits with physarum wires"
    - "slime mould logic gates based on frequency changes of electrical potential oscillation"
    - "slime mould electronic oscillators"
    - "towards slime mould chemical sensor mapping chemical inputs onto electrical potential dynamics of physarum polycephalum"
    - "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-4 (induced by source paper "a scalable method to find the shortest path in a graph with circuits of memristors"):
  with members:
    - "an fpga based massively parallel neuromorphic cortex simulator"
    - "image edge detection based on swarm intelligence using memristive networks"
    - "self organization and solution of shortest path optimization problems with memristive networks"

Connected through hyperedge HE-5 (induced by source paper "living wires effects of size and coating of gold nanoparticles in altering the electrical properties of physarum polycephalum and lettuce seedlings"):
  with members:
    - "towards plant wires"
    - "towards slime mould colour sensor recognition of colours by physarum polycephalum"
    - "routing of physarum polycephalum signals using simple chemicals"
    - "on the internalisation intraplasmodial carriage and excretion of metallic nanoparticles in the slime mould physarum polycephalum"
    - "towards physarum robots computing and manipulating on water surface"

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

Connected through hyperedge HE-7 (induced by source paper "towards lateral inhibition and collective perception in unorganised non neural systems"):
  with members:
    - "the emergence and dynamical evolution of complex transport networks from simple low level behaviours"
    - "emergence of self organized amoeboid movement in a multi agent approximation of physarum polycephalum"
    - "towards physarum robots computing and manipulating on water surface"
    - "physarum machine implementation of a kolmogorov uspensky machine on a biological substrate"

Connected through hyperedge HE-8 (induced by source paper "slime mould electronic oscillators"):
  with members:
    - "towards slime mould chemical sensor mapping chemical inputs onto electrical potential dynamics of physarum polycephalum"
    - "towards slime mould colour sensor recognition of colours by physarum polycephalum"
    - "slime mould tactile sensor"
    - "towards hybrid artificial slime mould devices"

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)