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: "achievable rates for the fading half duplex single relay selection network using buffer aided relaying"
  Abstract: In the half-duplex single relay selection network, comprised of a source,    $M$   half-duplex relays, and a destination, only one relay is active at any given time, i.e., only one relay receives or transmits, and the other relays are inactive, i.e., they do not receive nor transmit. The capacity of this network, when all links are affected by independent slow time-continuous fading and additive white Gaussian noise (AWGN) , is still unknown, and only achievable average rates have been reported in the literature so far. In this paper, we present new achievable average rates for this network, which are larger than the best known average rates. These new average rates are achieved with a buffer-aided relaying protocol. Since the developed buffer-aided protocol introduces unbounded delay, we also devise a buffer-aided protocol which limits the delay at the expense of a decrease in rate. Moreover, we discuss the practical implementation of the proposed buffer-aided relaying protocols and show that they do not require more resources for channel state information acquisition than the existing relay selection protocols.

Connected through hyperedge HE-1 (induced by source paper "efficient resource allocation for relay assisted computation offloading in mobile edge computing"):
  with members:
    - "minimum symbol error rate based constant envelope precoding for multiuser massive miso downlink"
    - "joint cooperative computation and interactive communication for relay assisted mobile edge computing"
    - "joint task offloading scheduling and transmit power allocation for mobile edge computing systems"
    - "inexact block coordinate descent methods for symmetric nonnegative matrix factorization"
    - "joint computation and communication cooperation for mobile edge computing"
    - "delay optimal computation task scheduling for mobile edge computing systems"
    - "energy efficient resource allocation for mobile edge computation offloading"
    - "joint optimization of radio and computational resources for multicell mobile edge computing"

Connected through hyperedge HE-2 (induced by source paper "spatially random relay selection for full half duplex cooperative noma networks"):
  with members:
    - "performance analysis of noma with fixed gain relaying over nakagami m fading channels"
    - "non orthogonal multiple access in large scale heterogeneous networks"
    - "modulation and multiple access for 5g networks"
    - "noma assisted wireless caching strategies and performance analysis"
    - "nonorthogonal multiple access in large scale underlay cognitive radio networks"
    - "relay selection for cooperative noma"
    - "optimal joint power and subcarrier allocation for full duplex multicarrier non orthogonal multiple access systems"
    - "enhancing the physical layer security of non orthogonal multiple access in large scale networks"

Connected through hyperedge HE-3 (induced by source paper "buffer aided relaying for the two hop full duplex relay channel with self interference"):
  with members:
    - "virtual full duplex buffer aided relaying in the presence of inter relay interference"
    - "all digital self interference cancellation technique for full duplex systems"
    - "on the capacity of the two hop half duplex relay channel"
    - "a buffer aided successive opportunistic relay selection scheme with power adaptation and inter relay interference cancellation for cooperative diversity systems"
    - "effective capacity of buffer aided full duplex relay systems with selection relaying"
    - "capacity of the gaussian two hop full duplex relay channel with residual self interference"
    - "statistical delay tradeoffs in buffer aided two hop wireless communication systems"
    - "buffer aided relaying with adaptive link selection"

Connected through hyperedge HE-4 (induced by source paper "decoupled uplink and downlink in a wireless system with buffer aided relaying"):
  with members:
    - "why to decouple the uplink and downlink in cellular networks and how to do it"
    - "analysis of the decoupled access for downlink and uplink in wireless heterogeneous networks"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "load backhaul aware decoupled downlink uplink access in 5g systems"
    - "buffer aided relaying with adaptive link selection"
    - "five disruptive technology directions for 5g"
    - "physical network coding in two way wireless relay channels"

Connected through hyperedge HE-5 (induced by source paper "outage effective capacity of buffer aided diamond relay systems using harq with incremental redundancy"):
  with members:
    - "effective capacity of retransmission schemes a recurrence relation approach"
    - "backlog and delay reasoning in harq systems"
    - "statistical delay tradeoffs in buffer aided two hop wireless communication systems"
    - "using superposition codebooks and partial decode and forward in low snr parallel relay networks"
    - "buffer aided relaying with adaptive link selection fixed and mixed rate transmission"
    - "broadcast approaches to the diamond channel"

Connected through hyperedge HE-6 (induced by source paper "optimal relay selection for the parallel hybrid rf fso relay channel non buffer aided and buffer aided designs"):
  with members:
    - "optical communication in space challenges and mitigation techniques"
    - "hybrid radio free space optical design for next generation backhaul systems"
    - "achievable rate region of the bidirectional buffer aided relay channel with block fading"
    - "statistical delay tradeoffs in buffer aided two hop wireless communication systems"
    - "experiment driven characterization of full duplex wireless systems"
    - "a simple cooperative diversity method based on network path selection"

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.IT(Information Theory)