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: "feasibility of interference alignment for the mimo interference channel"
  Abstract: We study vector space interference alignment for the multiple-input multiple-output interference channel with no time or frequency diversity, and no symbol extensions. We prove both necessary and sufficient conditions for alignment. In particular, we characterize the feasibility of alignment for the symmetric three-user channel where all users transmit along d dimensions, all transmitters have M antennas and all receivers have N antennas, as well as feasibility of alignment for the fully symmetric (M = N) channel with an arbitrary number of users. An implication of our results is that the total degrees of freedom available in a K-user interference channel, using only spatial diversity from the multiple antennas, is at most 2. This is in sharp contrast to the K/2 degrees of freedom shown to be possible by Cadambe and Jafar with arbitrarily large time or frequency diversity. Moving beyond the question of feasibility, we additionally discuss computation of the number of solutions using Schubert calculus in cases where there are a finite number of solutions.

Connected through hyperedge HE-1 (induced by source paper "the interference channel revisited aligning interference by adjusting receive antenna separation"):
  with members:
    - "an overview of signal processing techniques for millimeter wave mimo systems"
    - "on media based modulation using rf mirrors"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "performance analysis and optimization for interference alignment over mimo interference channels with limited feedback"
    - "five disruptive technology directions for 5g"
    - "csi feedback reduction for mimo interference alignment"
    - "the approximate sum capacity of the symmetric gaussian k user interference channel"
    - "on feasibility of interference alignment in mimo interference networks"

Connected through hyperedge HE-2 (induced by source paper "generalized low rank optimization for topological cooperation in ultra dense networks"):
  with members:
    - "no spurious local minima in nonconvex low rank problems a unified geometric analysis"
    - "low rank matrix completion for topological interference management by riemannian pursuit"
    - "matrix completion has no spurious local minimum"
    - "an overview of low rank matrix recovery from incomplete observations"
    - "generalized degrees of freedom of the symmetric k user interference channel under finite precision csit"
    - "large scale convex optimization for dense wireless cooperative networks"
    - "topological interference management with transmitter cooperation"
    - "topological interference management through index coding"

Connected through hyperedge HE-3 (induced by source paper "on the feasibility of interference alignment in compounded mimo broadcast channels with antenna correlation and mixed user classes"):
  with members:
    - "error performance of wireless powered cognitive relay networks with interference alignment"
    - "on the capacity of wireless powered cognitive relay network with interference alignment"
    - "bounds on eigenvalues of a spatial correlation matrix"
    - "mimo interference alignment over correlated channels with imperfect csi"
    - "why does the kronecker model result in misleading capacity estimates"
    - "on feasibility of interference alignment in mimo interference networks"
    - "interference alignment with analog channel state feedback"
    - "on feasibility of interference alignment in mimo interference networks"

Connected through hyperedge HE-4 (induced by source paper "data shuffling in wireless distributed computing via low rank optimization"):
  with members:
    - "deep gradient compression reducing the communication bandwidth for distributed training"
    - "efficient processing of deep neural networks a tutorial and survey"
    - "a fundamental tradeoff between computation and communication in distributed computing"
    - "low rank matrix completion for topological interference management by riemannian pursuit"
    - "an overview of low rank matrix recovery from incomplete observations"
    - "a scalable framework for wireless distributed computing"
    - "deep compression compressing deep neural networks with pruning trained quantization and huffman coding"
    - "large scale convex optimization for dense wireless cooperative networks"

Connected through hyperedge HE-5 (induced by source paper "topological interference management with user admission control via riemannian optimization"):
  with members:
    - "fundamental tradeoff between storage and latency in cache aided wireless interference networks"
    - "a fundamental tradeoff between computation and communication in distributed computing"
    - "alternating minimization algorithms for hybrid precoding in millimeter wave mimo systems"
    - "low rank matrix completion for topological interference management by riemannian pursuit"
    - "low rank tensor completion a riemannian manifold preconditioning approach"
    - "an overview of low rank matrix recovery from incomplete observations"
    - "wireless communications in the era of big data"
    - "heterogeneous cellular networks using wireless backhaul fast admission control and large system analysis"

Connected through hyperedge HE-6 (induced by source paper "fundamental storage latency tradeoff in cache aided mimo interference networks"):
  with members:
    - "fog aided wireless networks for content delivery fundamental latency tradeoffs"
    - "fundamental tradeoff between storage and latency in cache aided wireless interference networks"
    - "degrees of freedom of cache aided wireless interference networks"
    - "fundamental limits of cache aided interference management"
    - "wireless caching technical misconceptions and business barriers"
    - "the three primary colors of mobile systems"
    - "cooperative tx rx caching in interference channels a storage latency tradeoff study"
    - "cloud and cache aided wireless networks fundamental latency trade offs"

Connected through hyperedge HE-7 (induced by source paper "low rank matrix completion for topological interference management by riemannian pursuit"):
  with members:
    - "alternating minimization algorithms for hybrid precoding in millimeter wave mimo systems"
    - "large scale convex optimization for dense wireless cooperative networks"
    - "large scale convex optimization for ultra dense cloud ran"
    - "when does an ensemble of matrices with randomly scaled rows lose rank"
    - "a matrix completion approach to linear index coding problem"
    - "topological interference management with transmitter cooperation"
    - "topological interference management through index coding"
    - "cellular interference alignment"

Connected through hyperedge HE-8 (induced by source paper "degrees of freedom of the two user mimo broadcast channel with private and common messages under hybrid csit models"):
  with members:
    - "miso broadcast channel with hybrid csit beyond two users"
    - "degrees of freedom of the mimo 2x2 interference network with general message sets"
    - "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 dof region of the k user miso broadcast channel with hybrid csit"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "fundamental limits of caching"

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)