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: "nested lattice codes for gaussian two way relay channels"
  Abstract: In this paper, we consider a Gaussian two-way relay channel (GTRC), where two sources exchange messages with each other through a relay. We assume that there is no direct link between sources, and all nodes operate in full-duplex mode. By utilizing nested lattice codes for the uplink (i.e., MAC phase), and structured binning for the downlink (i.e., broadcast phase), we propose two achievable schemes. Scheme 1 is based on compute and forward scheme of [1] while scheme 2 utilizes two different lattices for source nodes based on a three-stage lattice partition chain. We show that scheme 2 can achieve capacity region at the high signal-to-noise ratio (SNR). Regardless all channel parameters, the achievable rate of scheme 2 is within 0.2654 bit from the cut-set outer bound for user 1. For user 2, the proposed scheme achieves within 0.167 bit from the outer bound if channel coefficient is larger than one, and achieves within 0.2658 bit from the outer bound if channel coefficient is smaller than one. Moreover, sum rate of the proposed scheme is within 0.334 bits from the sum capacity. These gaps for GTRC are the best gap-to-capacity results to date.

Connected through hyperedge HE-1 (induced by source paper "on the dof of two way 2 2 2 relay networks with or without relay caching"):
  with members:
    - "fundamental limits of cache aided interference management"
    - "on the capacity regions of two way diamond channels"
    - "beyond one way communication degrees of freedom of multi way relay mimo interference networks"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "caching eliminates the wireless bottleneck in video aware wireless networks"
    - "design and characterization of a full duplex multiantenna system for wifi networks"
    - "lattice coding for the two way two relay channel"
    - "two unicast two hop interference network finite field model"

Connected through hyperedge HE-2 (induced by source paper "the dof of two way butterfly networks"):
  with members:
    - "sprout a functional caching approach to minimize service latency in erasure coded storage"
    - "on the capacity regions of two way diamond channels"
    - "beyond one way communication degrees of freedom of multi way relay mimo interference networks"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "caching eliminates the wireless bottleneck in video aware wireless networks"
    - "design and characterization of a full duplex multiantenna system for wifi networks"
    - "lattice coding for the two way two relay channel"
    - "two unicast two hop interference network finite field model"

Connected through hyperedge HE-3 (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"
    - "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"
    - "divide and conquer approaching the capacity of the two pair bidirectional gaussian relay network"
    - "outer bounds for the capacity region of a gaussian two way relay channel"

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)