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: "analytic expressions and bounds for special functions and applications in communication theory"
  Abstract: This work is devoted to the derivation of novel analytic expressions and bounds for a family of special functions that are useful in wireless communication theory. These functions are the well-known Nuttall $Q{-}$function, the incomplete Toronto function, the Rice $Ie$-function and the incomplete Lipschitz-Hankel integrals. #R##N#Capitalizing on the offered results, useful identities are additionally derived between the above functions and the Humbert, $\Phi_{1}$, function as well as for specific cases of the Kamp${\it \acute{e}}$ de F${\it \acute{e}}$riet function. These functions can be considered useful mathematical tools that can be employed in applications relating to the analytic performance evaluation of modern wireless communication systems such as cognitive radio, cooperative and free-space optical communications as well as radar, diversity and multi-antenna systems. As an example, new closed-form expressions are derived for the outage probability over non-linear generalized fading channels, namely, $\alpha{-}\eta{-}\mu$, $\alpha{-}\lambda{-}\mu$ and $\alpha{-}\kappa{-}\mu$ as well as for specific cases of the $\eta{-}\mu$ and $\lambda{-}\mu$ fading channels. Furthermore, simple expressions are presented for the channel capacity for the truncated channel inversion with fixed rate and the corresponding optimum cut-off signal-to-noise ratio for single-and multi-antenna communication systems over Rician fading channels. The accuracy and validity of the derived expressions is justified through extensive comparisons with respective numerical results.

Connected through hyperedge HE-1 (induced by source paper "a semi linear approximation of the first order marcum q function with application to predictor antenna systems"):
  with members:
    - "integrated access backhauled networks"
    - "ultra reliable uav communication using altitude and cooperation diversity"
    - "on the performance of the relay arq networks"
    - "solutions to integrals involving the marcum q function and applications"
    - "an approximation of the first order marcum q function with application to network connectivity analysis"

Connected through hyperedge HE-2 (induced by source paper "solutions to integrals involving the marcum q function and applications"):
  with members:
    - "analytic solutions to a marcum q function based integral and application in energy detection of unknown signals over multipath fading channels"
    - "the area under a receiver operating characteristic curve over enriched multipath fading conditions"
    - "novel expressions for the rice ie function and the incomplete lipschitz hankel integrals"
    - "analytic performance evaluation of underlay relay cognitive networks with channel estimation errors"
    - "the effects of limited channel knowledge on cognitive radio system capacity"

Connected through hyperedge HE-3 (induced by source paper "secrecy capacity analysis over kappa mu fading channels theory and applications"):
  with members:
    - "on the equivalence between interference and eavesdropping in wireless communications"
    - "secrecy capacity region of fading broadcast channels"
    - "the gaussian multiple access wire tap channel"

Connected through hyperedge HE-4 (induced by source paper "entropy and channel capacity under optimum power and rate adaptation over generalized fading conditions"):
  with members:
    - "analytic solutions to a marcum q function based integral and application in energy detection of unknown signals over multipath fading channels"
    - "on the distribution of the sum of gamma gamma variates and applications in rf and optical wireless communications"

Connected through hyperedge HE-5 (induced by source paper "analytic solutions to a marcum q function based integral and application in energy detection of unknown signals over multipath fading channels"):
  with members:
    - "analytic performance evaluation of underlay relay cognitive networks with channel estimation errors"
    - "on the monotonicity of the generalized marcum and nuttall q functions"

Connected through hyperedge HE-6 (induced by source paper "energy detection of unknown signals over cascaded fading channels"):
  with members:
    - "the area under a receiver operating characteristic curve over enriched multipath fading conditions"
    - "a new formula for the ber of binary modulations with dual branch selection over generalized k"

Connected through hyperedge HE-7 (induced by source paper "bit error rate analysis of underlay relay cognitive networks with channel estimation errors"):
  with members:
    - "analytic solutions to a marcum q function based integral and application in energy detection of unknown signals over multipath fading channels"
    - "analytic performance evaluation of underlay relay cognitive networks with channel estimation errors"

Connected through hyperedge HE-8 (induced by source paper "another look in the analysis of cooperative spectrum sensing over nakagami m fading channels"):
  with members:
    - "spectrum sensing algorithms for cognitive radio based on statistical covariances"

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)