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: "on product codes with probabilistic amplitude shaping for high throughput fiber optic systems"
  Abstract: We consider probabilistic amplitude shaping (PAS) as a means of flexibly varying the spectral efficiency of fiber-optic communication systems. Recently, the PAS architecture originally proposed for a coded modulation (CM) scheme with soft decision decoding has been applied to bit-wise hard decision decoding (HDD) of staircase code. In this paper, we apply the PAS to bit-wise HDD based on the product codes (PCs). We show that the PAS with PCs yields significant gains up to approximately 1 bit/channel use with respect to the baseline scheme using PC with uniform signaling. We also show that the performance of PAS with PC is close to that of PAS with staircase codes. Furthermore, we show that by combining our recently proposed soft-assisted decoder for PCs with the PAS architecture, one can achieve even better operating point than that of PAS with staircase codes decoded using conventional bounded distance decoding.

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)