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: "placement delivery array design through strong edge coloring of bipartite graphs"
  Abstract: The technique of coded caching proposed by Madddah-Ali and Niesen is a promising approach to alleviate the load of networks during peak-traffic times. Recently, placement delivery array (PDA) was presented to characterize both the placement and delivery phase in a single array for the centralized coded caching algorithm. In this letter, we reinterpret PDA from a new perspective, i.e., the strong edge coloring of bipartite graph (bigraph). We prove that, a PDA is equivalent to a strong edge colored bigraph. Thus, we can construct a class of PDAs from existing structures in bigraphs. The class subsumes the scheme proposed by Maddah-Ali  et al.  and a more general class of PDAs proposed by Shangguan  et al.  as special cases.

Connected through hyperedge HE-1 (induced by source paper "subexponential and linear subpacketization coded caching via line graphs and projective geometry"):
  with members:
    - "some new constructions of coded caching schemes with reduced subpacketization"
    - "a multi antenna coded caching scheme with linear subpacketization"
    - "decentralized coded caching without file splitting"
    - "subpacketization rate trade off in multi antenna coded caching"
    - "coded caching based on combinatorial designs"
    - "a unified framework for constructing centralized coded caching schemes"
    - "low subpacketization coded caching via projective geometry for broadcast and d2d networks"
    - "coded caching via projective geometry a new low subpacketization scheme"

Connected through hyperedge HE-2 (induced by source paper "symmetric uncoded caching schemes with low subpacketization levels"):
  with members:
    - "low subpacketization coded caching via projective geometry for broadcast and d2d networks"
    - "the exact rate memory tradeoff for caching with uncoded prefetching"
    - "coded caching with low subpacketization levels"
    - "centralized coded caching schemes a hypergraph theoretical approach"
    - "caching and delivery via interference elimination"
    - "on the optimality of uncoded cache placement"
    - "finite length analysis of caching aided coded multicasting"
    - "coded caching with nonuniform demands"

Connected through hyperedge HE-3 (induced by source paper "a unified framework for constructing centralized coded caching schemes"):
  with members:
    - "coded caching based on combinatorial designs"
    - "the exact rate memory tradeoff for caching with uncoded prefetching"
    - "coded caching via line graphs of bipartite graphs"
    - "adding transmitters dramatically boosts coded caching gains for finite file sizes"
    - "optimal placement delivery arrays with minimum number of rows"
    - "on the placement delivery array design for centralized coded caching scheme"
    - "coded caching with linear subpacketization is possible using ruzsa szem eredi graphs"
    - "coded caching schemes with reduced subpacketization from linear block codes"

Connected through hyperedge HE-4 (induced by source paper "subpacketization in coded caching with demand privacy"):
  with members:
    - "on coded caching with private demands"
    - "demand private coded caching"
    - "the exact rate memory tradeoff for caching with uncoded prefetching"
    - "optimal placement delivery arrays with minimum number of rows"
    - "on the placement delivery array design for centralized coded caching scheme"
    - "coded caching schemes with reduced subpacketization from linear block codes"
    - "private broadcasting an index coding approach"
    - "centralized coded caching schemes a hypergraph theoretical approach"

Connected through hyperedge HE-5 (induced by source paper "a fundamental storage communication tradeoff in distributed computing with straggling nodes"):
  with members:
    - "speeding up distributed machine learning using codes"
    - "storage computation and communication a fundamental tradeoff in distributed computing"
    - "speeding up distributed gradient descent by utilizing non persistent stragglers"
    - "hierarchical coding for distributed computing"
    - "a storage computation communication tradeoff for distributed computing"
    - "coded distributed computing with node cooperation substantially increases speedup factors"
    - "straggler mitigation in distributed matrix multiplication fundamental limits and optimal coding"
    - "improved latency communication trade off for map shuffle reduce systems with stragglers"

Connected through hyperedge HE-6 (induced by source paper "improved constructions of coded caching schemes for combination networks"):
  with members:
    - "caching in combination networks a novel delivery by leveraging the network topology"
    - "placement delivery array design for combination networks with edge caching"
    - "on combination networks with cache aided relays and users"
    - "a novel asymmetric coded placement in combination networks with end user caches"
    - "optimal placement delivery arrays with minimum number of rows"
    - "on the placement delivery array design for centralized coded caching scheme"
    - "caching in combination networks novel multicast message generation and delivery by leveraging the network topology"
    - "combination networks with or without secrecy constraints the impact of caching relays"

Connected through hyperedge HE-7 (induced by source paper "some new constructions of coded caching schemes with reduced subpacketization"):
  with members:
    - "coded caching based on combinatorial designs"
    - "the exact rate memory tradeoff for caching with uncoded prefetching"
    - "coded caching via line graphs of bipartite graphs"
    - "on the placement delivery array design for centralized coded caching scheme"
    - "coded caching schemes with reduced subpacketization from linear block codes"
    - "constructions of coded caching schemes with flexible memory size"
    - "centralized coded caching schemes a hypergraph theoretical approach"
    - "caching and delivery via interference elimination"

Connected through hyperedge HE-8 (induced by source paper "on the dynamic centralized coded caching design"):
  with members:
    - "the exact rate memory tradeoff for caching with uncoded prefetching"
    - "optimization of heterogeneous coded caching"
    - "on the placement delivery array design for centralized coded caching scheme"
    - "uncoded placement optimization for coded delivery"
    - "coded caching with low subpacketization levels"
    - "centralized coded caching schemes a hypergraph theoretical approach"
    - "caching and delivery via interference elimination"
    - "on the optimality of uncoded cache placement"

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)