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: "cooperative slotted aloha for multi base station systems"
  Abstract: We introduce a framework to study slotted Aloha with cooperative base stations. Assuming a geographic-proximity communication model, we propose several decoding algorithmswith different degrees of base stations' cooperation (non-cooperative, spatial, temporal, and spatio-temporal). With spatial cooperation, neighboring base stations inform each other whenever they collect a user within their coverage overlap; temporal cooperation corresponds to (temporal) successive interference cancellation done locally at each station. We analyze the four decoding algorithms and establish several fundamental results. With all algorithms, the peak throughput (average number of decoded users per slot, across all base stations) increases linearly with the number of base stations. Further, temporal and spatio-temporal cooperations exhibit a threshold behavior with respect to the normalized load (number of users per station, per slot). There exists a positive load $G^\star$, such that, below $G^\star$, the decoding probability is asymptotically maximal possible, equal the probability that a user is heard by at least one base station; with non-cooperative decoding and spatial cooperation, we show that $G^\star$ is zero. Finally, with spatio-temporal cooperation, we optimize the degree distribution according to which users transmit their packet replicas; the optimum is in general very different from the corresponding optimal distribution of the single-base station system.

Connected through hyperedge HE-1 (induced by source paper "reliability latency performance of frameless aloha with and without feedback"):
  with members:
    - "finite length analysis of irregular repetition slotted aloha in the waterfall region"
    - "on the modeling and performance assessment of random access with sic"
    - "optimized frameless aloha for cooperative base stations with overlapped coverage areas"
    - "frameless aloha with reliability latency guarantees"
    - "inactivation decoding of lt and raptor codes analysis and code design"
    - "finite length analysis of frameless aloha"
    - "on frame asynchronous coded slotted aloha asymptotic finite length and delay analysis"
    - "error floor analysis of coded slotted aloha over packet erasure channels"

Connected through hyperedge HE-2 (induced by source paper "space diversity based grant free random access for critical and non critical iot services"):
  with members:
    - "multiple relay slotted aloha performance analysis and bounds"
    - "modern random access for beyond 5g systems a multiple relay aloha perspective"
    - "information centric grant free access for iot fog networks edge vs cloud detection and learning"
    - "non orthogonal multiplexing of ultra reliable and broadband services in fog radio architectures"
    - "5g wireless network slicing for embb urllc and mmtc a communication theoretic view"
    - "grant free radio access for short packet communications over 5g networks"
    - "grant free radio access iot networks scalability analysis in coexistence scenarios"
    - "two user erasure interference channels with local delayed csit"

Connected through hyperedge HE-3 (induced by source paper "multiple relay slotted aloha performance analysis and bounds"):
  with members:
    - "enhancing contention resolution aloha using combining techniques"
    - "cooperative slotted aloha for massive m2m random access using directional antennas"
    - "coded slotted aloha a graph based method for uncoordinated multiple access"
    - "aloha random access that operates as a rateless code"

Connected through hyperedge HE-4 (induced by source paper "modern random access for beyond 5g systems a multiple relay aloha perspective"):
  with members:
    - "multiple relay slotted aloha performance analysis and bounds"
    - "coded random access applying codes on graphs to design random access protocols"

Connected through hyperedge HE-5 (induced by source paper "enhancing contention resolution aloha using combining techniques"):
  with members:
    - "error floor analysis of coded slotted aloha over packet erasure channels"
    - "all to all broadcast for vehicular networks based on coded slotted aloha"
    - "coded slotted aloha a graph based method for uncoordinated multiple access"
    - "the throughput of slotted aloha with diversity"
    - "aloha random access that operates as a rateless code"
    - "optimum header positioning in successive interference cancellation sic based aloha"
    - "sliding window based contention resolution diversity slotted aloha"
    - "enhanced contention resolution aloha ecra"

Connected through hyperedge HE-6 (induced by source paper "interference aware opportunistic random access in dense iot networks"):
  with members:
    - "opportunistic downlink interference alignment for multi cell mimo networks"
    - "mu mimo mac protocols for wireless local area networks a survey"
    - "massive machine type communications in 5g physical and mac layer solutions"
    - "opportunistic interference alignment for random access networks"
    - "maximum sum rate of slotted aloha with capture"
    - "coded slotted aloha a graph based method for uncoordinated multiple access"
    - "scalable synchronization and reciprocity calibration for distributed multiuser mimo"
    - "can one achieve multiuser diversity in uplink multi cell networks"

Connected through hyperedge HE-7 (induced by source paper "multi cell aware opportunistic random access for machine type communications"):
  with members:
    - "opportunistic downlink interference alignment for multi cell mimo networks"
    - "massive machine type communications in 5g physical and mac layer solutions"
    - "opportunistic interference alignment for random access networks"
    - "maximum sum rate of slotted aloha with capture"
    - "coded slotted aloha a graph based method for uncoordinated multiple access"
    - "scalable synchronization and reciprocity calibration for distributed multiuser mimo"
    - "can one achieve multiuser diversity in uplink multi cell networks"
    - "opportunistic interference mitigation achieves optimal degrees of freedom in wireless multi cell uplink networks"

Connected through hyperedge HE-8 (induced by source paper "optimized frameless aloha for cooperative base stations with overlapped coverage areas"):
  with members:
    - "finite length analysis of frameless aloha"
    - "non orthogonal multiple access in multi cell networks theory performance and practical challenges"
    - "exploiting capture effect in frameless aloha for massive wireless random access"
    - "aloha random access that operates as a rateless code"
    - "pseudo random aloha for enhanced collision recovery in rfid"
    - "frameless aloha protocol for wireless networks"

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)