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: "relaying in diffusion based molecular communication"
  Abstract: Molecular communication between biological entities is a new paradigm in communications. Recently, we studied molecular communication between two nodes formed from synthetic bacteria. Due to high randomness in behavior of bacteria, we used a population of them in each node. The reliability of such communication systems depends on both the maximum concentration of molecules that a transmitter node is able to produce at the receiver node as well as the number of bacteria in each nodes. This maximum concentration of molecules falls with distance which makes the communication to the far nodes nearly impossible. In order to alleviate this problem, in this paper, we propose to use a molecular relaying node. The relay node can resend the message either by the different or the same type of molecules as the original signal from the transmitter. We study two scenarios of relaying. In the first scenario, the relay node simply senses the received concentration and forwards it to the receiver. We show that this sense and forward scenario, depending on the type of molecules used for relaying, results in either increasing the range of concentration of molecules at the receiver or increasing the effective number of bacteria in the receiver node. For both cases of sense and forward relaying, we obtain the resulting improvement in channel capacity. We conclude that multi-type molecular relaying outperforms the single-type relaying. In the second scenario, we study the decode and forward relaying for the M-ary signaling scheme. We show that this relaying strategy increases the reliability of M-ary communication significantly.

Connected through hyperedge HE-1 (induced by source paper "end to end performance optimization in hybrid molecular and electromagnetic communications"):
  with members:
    - "applications of molecular communications to medicine a survey"
    - "active versus passive receiver model transforms for diffusive molecular communication"
    - "a comprehensive survey of recent advancements in molecular communication"
    - "analysis and design of multi hop diffusion based molecular communication networks"
    - "molecular communication in fluid media the additive inverse gaussian noise channel"

Connected through hyperedge HE-2 (induced by source paper "impact of cooperation in flow induced diffusive mobile molecular communication"):
  with members:
    - "on flow induced diffusive mobile molecular communication first hitting time and performance analysis"
    - "amplify and forward relaying in two hop diffusion based molecular communication networks"
    - "arrival modeling and error analysis for molecular communication via diffusion with drift"

Connected through hyperedge HE-3 (induced by source paper "diffusion based molecular communication principle key technologies and challenges"):
  with members:
    - "physical layer network coding in molecular two way relay networks"
    - "capacity limits of diffusion based molecular timing channels"
    - "on the capacity of level and type modulation in molecular communication with ligand receptors"
    - "amplify and forward relaying in two hop diffusion based molecular communication networks"
    - "a unifying model for external noise sources and isi in diffusive molecular communication"
    - "extended master equation models for molecular communication networks"
    - "diffusion based nanonetworking a new modulation technique and performance analysis"
    - "capacity of diffusion based molecular communication with ligand receptors"

Connected through hyperedge HE-4 (induced by source paper "information theory of molecular communication directions and challenges"):
  with members:
    - "shannon capacity of signal transduction for multiple independent receptors"
    - "capacity limits of diffusion based molecular timing channels"
    - "comprehensive reactive receiver modeling for diffusive molecular communication systems reversible binding molecule degradation and finite number of receptors"
    - "type based sign modulation for molecular communication"
    - "a comprehensive survey of recent advancements in molecular communication"
    - "information friction and its implications on minimum energy required for communication"
    - "a perspective on future research directions in information theory"
    - "upper bound on the capacity of a cascade of nonlinear and noisy channels"

Connected through hyperedge HE-5 (induced by source paper "a comprehensive survey of recent advancements in molecular communication"):
  with members:
    - "molecular mimo from theory to prototype"
    - "molecular communications channel model and physical layer techniques"
    - "a universal channel model for molecular communication systems with metal oxide detectors"
    - "design and optimizing of on chip kinesin substrates for molecular communication"
    - "improving receiver performance of diffusive molecular communication with enzymes"
    - "a molecular communication link for monitoring in confined environments"
    - "effect of receptor density and size on signal reception in molecular communication via diffusion with an absorbing receiver"
    - "optimal receiver design for diffusive molecular communication with flow and additive noise"

Connected through hyperedge HE-6 (induced by source paper "on medium chemical reaction in diffusion based molecular communication a two way relaying example"):
  with members:
    - "effective enzyme deployment for degradation of interference molecules in molecular communication"
    - "diffusive molecular communications with reactive signaling"
    - "physical layer network coding in molecular two way relay networks"
    - "information theory of molecular communication directions and challenges"
    - "over the air function computation in sensor networks"
    - "a comprehensive survey of recent advancements in molecular communication"
    - "analysis and design of multi hop diffusion based molecular communication networks"
    - "on the capacity of point to point and multiple access molecular communications with ligand receptors"

Connected through hyperedge HE-7 (induced by source paper "inscribed matter communication part ii"):
  with members:
    - "on the capacity of diffusion based molecular timing channels"
    - "capacity limits of diffusion based molecular timing channels"
    - "a comprehensive survey of recent advancements in molecular communication"
    - "capacity of electron based communication over bacterial cables the full csi case"
    - "design and analysis of wireless communication systems using diffusion based molecular communication among bacteria"
    - "timing channels with multiple identical quanta"
    - "capacity of discrete molecular diffusion channels"
    - "nanoscale communication with brownian motion"

Connected through hyperedge HE-8 (induced by source paper "physical layer network coding in molecular two way relay networks"):
  with members:
    - "a comprehensive survey of recent advancements in molecular communication"
    - "analysis and design of multi hop diffusion based molecular communication networks"
    - "amplify and forward relaying in two hop diffusion based molecular communication networks"
    - "improving receiver performance of diffusive molecular communication with enzymes"
    - "design and analysis of wireless communication systems using diffusion based molecular communication among bacteria"
    - "physical layer network coding tutorial survey and beyond"

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)