human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "hierarchical self assembly of fractals with signal passing tiles"):
  Abstract: In this paper, we present high-level overviews of tile-based self-assembling systems capable of producing complex, infinite, aperiodic structures known as discrete self-similar fractals. Fractals have a variety of interesting mathematical and structural properties, and by utilizing the bottom-up growth paradigm of self-assembly to create them we not only learn important techniques for building such complex structures, we also gain insight into how similar structural complexity arises in natural self-assembling systems. Our results fundamentally leverage hierarchical assembly processes, and use as our building blocks square "tile" components which are capable of activating and deactivating their binding "glues" a constant number of times each, based only on local interactions. We provide the first constructions capable of building arbitrary discrete self-similar fractals at scale factor 1, and many at temperature 1 (i.e. "non-cooperatively"), including the Sierpinski triangle.

Includes members:
  Member "self assembly of 4 sided fractals in the two handed tile assembly model":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "hierarchical growth is necessary and sometimes sufficient to self assemble discrete self similar fractals")
  Member "hierarchical self assembly of fractals with signal passing tiles extended abstract":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "hierarchical growth is necessary and sometimes sufficient to self assemble discrete self similar fractals")
  Member "replication of arbitrary hole free shapes via self assembly with signal passing tiles extended abstract":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "leader election and shape formation with self organizing programmable matter")
  Member "scaled tree fractals do not strictly self assemble":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "hierarchical growth is necessary and sometimes sufficient to self assemble discrete self similar fractals")
  Member "strict self assembly of fractals using multiple hands":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "hierarchical growth is necessary and sometimes sufficient to self assemble discrete self similar fractals")
  Member "signal transmission across tile assemblies 3d static tiles simulate active self assembly by 2d signal passing tiles":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "simulation of programmable matter systems using active tile based self assembly")
  Member "asynchronous signal passing for tile self assembly fuel efficient computation and efficient assembly of shapes":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "the program size complexity of self assembled paths")
  Member "two hands are better than one up to constant factors":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "the program size complexity of self assembled paths")

Question: Please tell me which class the source paper 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)