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: "divide and conquer approaching the capacity of the two pair bidirectional gaussian relay network"
  Abstract: The capacity region of multi-pair bidirectional relay networks, in which a relay node facilitates the communication between multiple pairs of users, is studied. This problem is first examined in the context of the linear shift deterministic channel model. The capacity region of this network when the relay is operating at either full-duplex mode or half-duplex mode for arbitrary number of pairs is characterized. It is shown that the cut-set upper-bound is tight and the capacity region is achieved by a so called divide-and-conquer relaying strategy. The insights gained from the deterministic network are then used for the Gaussian bidirectional relay network. The strategy in the deterministic channel translates to a specific superposition of lattice codes and random Gaussian codes at the source nodes and successive interference cancelation at the receiving nodes for the Gaussian network. The achievable rate of this scheme with two pairs is analyzed and it is shown that for all channel gains it achieves to within 3 bits/sec/Hz per user of the cut-set upper-bound. Hence, the capacity region of the two-pair bidirectional Gaussian relay network to within 3 bits/sec/Hz per user is characterized.

Connected through hyperedge HE-1 (induced by source paper "degrees of freedom of the mimo three way channel with node intermittency"):
  with members:
    - "on the degrees of freedom of the mimo three way channel with intermittent connectivity"
    - "adaptation is useless for two discrete additive noise two way channels"
    - "degrees of freedom of the bursty mimo x channel without feedback"
    - "three way channels with multiple unicast sessions capacity approximation via network transformation"
    - "resource allocation for energy efficient 3 way relay channels"
    - "gaussian interference channel with intermittent feedback"
    - "a survey on device to device communication in cellular networks"
    - "beyond one way communication degrees of freedom of multi way relay mimo interference networks"

Connected through hyperedge HE-2 (induced by source paper "optimal dof region for the asymmetric two pair mimo two way relay channel"):
  with members:
    - "optimal degrees of freedom region for the asymmetric mimo y channel"
    - "generalized signal alignment on the achievable dof for multi user mimo two way relay channels"
    - "cyclic communication and the inseparability of mimo multi way relay channels"
    - "mimo multiway relaying with clustered full data exchange signal space alignment and degrees of freedom"
    - "mimo multiway relaying with pairwise data exchange a degrees of freedom perspective"
    - "generalized signal alignment for arbitrary mimo two way relay channels"
    - "approximate sum capacity of the y channel"
    - "degrees of freedom for the mimo multi way relay channel"

Connected through hyperedge HE-3 (induced by source paper "capacity of the gaussian two pair two way relay channel to within 1 2 bit"):
  with members:
    - "optimal dof region for the asymmetric two pair mimo two way relay channel"
    - "expanding the compute and forward framework unequal powers signal levels and multiple linear combinations"
    - "cyclic communication and the inseparability of mimo multi way relay channels"
    - "mimo multiway relaying with clustered full data exchange signal space alignment and degrees of freedom"
    - "degrees of freedom for the mimo multi way relay channel"
    - "the degrees of freedom of the mimo y channel"
    - "on the equal rate capacity of the awgn multiway relay channel"
    - "reliable physical layer network coding"

Connected through hyperedge HE-4 (induced by source paper "three way channels with multiple unicast sessions capacity approximation via network transformation"):
  with members:
    - "device relaying in cellular d2d networks a fairness perspective"
    - "a survey on device to device communication in cellular networks"
    - "mimo multiway relaying with pairwise data exchange a degrees of freedom perspective"
    - "the degrees of freedom of multi way device to device communications is limited by 2"
    - "approximate sum capacity of the y channel"
    - "degrees of freedom for the mimo multi way relay channel"
    - "the deterministic multicast capacity of 4 node relay networks"
    - "in band full duplex wireless challenges and opportunities"

Connected through hyperedge HE-5 (induced by source paper "on the capacity regions of two way diamond channels"):
  with members:
    - "on the symmetric k user interference channels with limited feedback"
    - "on the capacity and degrees of freedom regions of two user mimo interference channels with limited receiver cooperation"
    - "design and characterization of a full duplex multiantenna system for wifi networks"
    - "nested lattice codes for gaussian two way relay channels"
    - "lattice coding for the two way two relay channel"
    - "the gaussian two way diamond channel"
    - "on the capacity region and the generalized degrees of freedom region for the mimo interference channel with feedback"
    - "outer bounds for the capacity region of a gaussian two way relay channel"

Connected through hyperedge HE-6 (induced by source paper "cyclic communication and the inseparability of mimo multi way relay channels"):
  with members:
    - "spectral and energy efficiency in 3 way relay channels with circular message exchanges"
    - "simultaneous diagonalization on the dof region of the k user mimo multi way relay channel"
    - "beyond one way communication degrees of freedom of multi way relay mimo interference networks"
    - "approximate sum capacity of the y channel"
    - "degrees of freedom for the mimo multi way relay channel"
    - "the deterministic multicast capacity of 4 node relay networks"
    - "the degrees of freedom of the mimo y channel"
    - "optimal transmit power allocation for mimo two way cognitive relay networks with multiple relays"

Connected through hyperedge HE-7 (induced by source paper "on two pair two way relay channel with an intermittently available relay"):
  with members:
    - "capacity results for binary fading interference channels with delayed csit"
    - "approximate capacity region of the two user miso broadcast channels with delayed csit"
    - "topological interference management with alternating connectivity"
    - "random access an information theoretic perspective"
    - "wireless network information flow a deterministic approach"
    - "compute and forward harnessing interference through structured codes"

Connected through hyperedge HE-8 (induced by source paper "capacity results for binary fading interference channels with delayed csit"):
  with members:
    - "two hop interference channels impact of linear schemes"
    - "binary fading interference channel with no csit"
    - "communication through collisions opportunistic utilization of past receptions"
    - "approximate capacity region of the two user miso broadcast channels with delayed csit"
    - "two hop interference channels impact of linear time varying schemes"
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "degrees of freedom region of the mimo interference channel with output feedback and delayed csit"
    - "degrees of freedom of two hop wireless networks everyone gets the entire cake"

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)