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: "distributed space time interference alignment with moderately delayed csit"
  Abstract: This paper proposes an interference alignment method with distributed and delayed channel state information at the transmitter (CSIT) for a class of interference networks. The core idea of the proposed method is to align interference signals over time at the unintended receivers in a distributed manner. With the proposed method, achievable tradeoffs between the sum of degrees of freedom (sum-DoF) and feedback delay of CSI are characterized in both the X-channel and three-user interference channel to reveal the impact on how the CSI feedback delay affects the sum-DoF of the interference networks. A major implication of derived results is that distributed and moderately delayed CSIT is useful to strictly improve the sum-DoF over the case of no CSI at the transmitter in a certain class of interference networks. For a class of X-channels, the results show how to optimally use distributed and moderately delayed CSIT to yield the same sum-DoF as instantaneous and global CSIT. Furthermore, leveraging the proposed transmission method and the known outer bound results, the sum-capacity of the two-user X-channel with a particular set of channel coefficients is characterized within a constant number of bits.

Connected through hyperedge HE-1 (induced by source paper "joint user selection power allocation and precoding design with imperfect csit for multi cell mu mimo downlink systems"):
  with members:
    - "optimal pilot and payload power control in single cell massive mimo systems"
    - "on the capacity of cloud radio access networks with oblivious relaying"
    - "on the ergodic rate lower bounds with applications to massive mimo"
    - "massive mimo with imperfect channel covariance information"
    - "sum rate maximization for linearly precoded downlink multiuser miso systems with partial csit a rate splitting approach"
    - "robust transmission in downlink multiuser miso systems a rate splitting approach"
    - "cell free massive mimo versus small cells"
    - "a rate splitting strategy for massive mimo with imperfect csit"

Connected through hyperedge HE-2 (induced by source paper "dof analysis of the mimo broadcast channel with alternating hybrid csit"):
  with members:
    - "miso broadcast channel with hybrid csit beyond two users"
    - "aligned image sets under channel uncertainty settling a conjecture by lapidoth shamai and wigger on the collapse of degrees of freedom under finite precision csit"
    - "on the degrees of freedom of the 3 user miso broadcast channel with hybrid csit"
    - "the degrees of freedom region of temporally correlated mimo networks with delayed csit"
    - "on the degrees of freedom of the k user time correlated broadcast channel with delayed csit"
    - "imperfect and unmatched csit is still useful for the frequency correlated miso broadcast channel"
    - "on the dof region of the k user miso broadcast channel with hybrid csit"
    - "miso broadcast channel with imperfect and un matched csit in the frequency domain dof region and transmission strategies"

Connected through hyperedge HE-3 (induced by source paper "network mimo transmitters with no csi can still be very useful"):
  with members:
    - "degrees of freedom of the k user miso interference channel with delayed local csit"
    - "aligned image sets under channel uncertainty settling a conjecture by lapidoth shamai and wigger on the collapse of degrees of freedom under finite precision csit"
    - "robust precoding for network mimo with hierarchical csit"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "csi feedback reduction for mimo interference alignment"
    - "fundamental limits of caching"
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"
    - "interference alignment with incomplete csit sharing"

Connected through hyperedge HE-4 (induced by source paper "on the degrees of freedom of mimo x networks with non cooperation transmitters"):
  with members:
    - "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"
    - "linear degrees of freedom of the mimo x channel with delayed csit"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "on x channels with feedback and delayed csi"
    - "degrees of freedom region of the mimo x channel with an arbitrary number of antennas"
    - "subspace alignment chains and the degrees of freedom of the three user mimo interference channel"
    - "the degrees of freedom region of the mimo interference channel with shannon feedback"

Connected through hyperedge HE-5 (induced by source paper "dof robust strategies for the k user distributed broadcast channel with weak csi"):
  with members:
    - "degrees of freedom of the k user miso interference channel with delayed local csit"
    - "robust precoding for network mimo with hierarchical csit"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "csi feedback reduction for mimo interference alignment"
    - "fundamental limits of caching"
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"
    - "interference alignment with incomplete csit sharing"
    - "completely stale transmitter channel state information is still very useful"

Connected through hyperedge HE-6 (induced by source paper "space time physical layer network coding"):
  with members:
    - "topological interference management through index coding"
    - "degrees of freedom for the mimo multi way relay channel"
    - "guiding blind transmitters degrees of freedom optimal interference alignment using relays"
    - "the degrees of freedom of the mimo y channel"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "two way interference channels"
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"
    - "divide and conquer approaching the capacity of the two pair bidirectional gaussian relay network"

Connected through hyperedge HE-7 (induced by source paper "advanced interference management technique potentials and limitations"):
  with members:
    - "space time physical layer network coding"
    - "feasibility of interference alignment for the mimo interference channel"
    - "topological interference management through index coding"
    - "guiding blind transmitters degrees of freedom optimal interference alignment using relays"
    - "interference alignment with incomplete csit sharing"
    - "on the synergistic benefits of alternating csit for the miso bc"
    - "a tractable approach to coverage and rate in cellular networks"
    - "completely stale transmitter channel state information is still very useful"

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)