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: "polyshard coded sharding achieves linearly scaling efficiency and security simultaneously"
  Abstract: Today's blockchains do not scale in a meaningful sense. As more nodes join the system, the efficiency of the system (computation, communication, and storage) degrades, or at best stays constant. A leading idea for enabling blockchains to scale efficiency is the notion of sharding: different subsets of nodes handle different portions of the blockchain, thereby reducing the load for each individual node. However, existing sharding proposals achieve efficiency scaling by compromising on trust - corrupting the nodes in a given shard will lead to the permanent loss of the corresponding portion of data. We observe that sharding is similar to replication coding, which is known to be inefficient and fragile in the coding theory community. In this paper, we demonstrate a new protocol for coded storage and computation in blockchains. In particular, we propose PolyShard: "polynomially coded sharding" scheme that achieves information-theoretic upper bounds on the efficiency of the storage, system throughput, as well as on trust, thus enabling a truly scalable system. We provide simulation results that numerically demonstrate the performance improvement over state of the arts, and the scalability of the PolyShard system. Finally, we discuss potential enhancements, and highlight practical considerations in building such a system.

Connected through hyperedge HE-1 (induced by source paper "on the feasibility of sybil attacks in shard based permissionless blockchains"):
  with members:
    - "chain of trust can trusted hardware help scaling blockchains"
    - "towards scaling blockchain systems via sharding"
    - "a survey on security and privacy issues of bitcoin"
    - "lagrange coded computing optimal design for resiliency security and privacy"
    - "blockchain mining games"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "solida a blockchain protocol based on reconfigurable byzantine consensus"
    - "centrally banked cryptocurrencies"

Connected through hyperedge HE-2 (induced by source paper "infocommit information theoretic polynomial commitment and verification"):
  with members:
    - "interpol information theoretically verifiable polynomial evaluation"

Connected through hyperedge HE-3 (induced by source paper "coded merkle tree solving data availability attacks in blockchains"):
  with members:
    - "fraud and data availability proofs maximising light client security and scaling blockchains with dishonest majorities"
    - "erasure code based low storage blockchain node"
    - "lsb a lightweight scalable blockchain for iot security and privacy"
    - "dynamic distributed storage for scaling blockchains"
    - "bitcoin ng a scalable blockchain protocol"
    - "optimal exact regenerating codes for distributed storage at the msr and mbr points via a product matrix construction"
    - "a survey on network codes for distributed storage"

Connected through hyperedge HE-4 (induced by source paper "metaanalysis of methods for scaling blockchain technology for automotive uses"):
  with members:
    - "a roadmap toward the resilient internet of things for cyber physical systems"
    - "spectre attacks exploiting speculative execution"
    - "a survey on the security of blockchain systems"
    - "on the feasibility of integrating mmwave and ieee 802 11p for v2v communications"
    - "millimeter wave vehicular communication to support massive automotive sensing"
    - "pushing the limits of lte a survey on research enhancing the standard"

Connected through hyperedge HE-5 (induced by source paper "sef a secure fountain architecture for slashing storage costs in blockchains"):
  with members:
    - "erasure code based low storage blockchain node"
    - "consensus in the age of blockchains"
    - "dynamic distributed storage for scaling blockchains"
    - "solida a blockchain protocol based on reconfigurable byzantine consensus"
    - "a survey on network codes for distributed storage"
    - "efficient erasure decoding of reed solomon codes"

Connected through hyperedge HE-6 (induced by source paper "interactive verifiable polynomial evaluation"):
  with members:
    - "interpol information theoretically verifiable polynomial evaluation"

Connected through hyperedge HE-7 (induced by source paper "straggler mitigation in distributed matrix multiplication fundamental limits and optimal coding"):
  with members:
    - "codedprivateml a fast and privacy preserving framework for distributed machine learning"
    - "distributed and private coded matrix computation with flexible communication load"
    - "secure coded multi party computation for massive matrix operations"
    - "private and secure distributed matrix multiplication with flexible communication load"
    - "private secure coded computation"
    - "uplink downlink tradeoff in secure distributed matrix multiplication"
    - "on the upload versus download cost for secure and private matrix multiplication"
    - "speeding up distributed machine learning using codes"

Connected through hyperedge HE-8 (induced by source paper "lagrange coded computing optimal design for resiliency security and privacy"):
  with members:
    - "codedprivateml a fast and privacy preserving framework for distributed machine learning"
    - "leveraging coding techniques for speeding up distributed computing"
    - "speeding up distributed machine learning using codes"
    - "coded computing for distributed graph analytics"
    - "fundamental limits of coded linear transform"
    - "straggler mitigation in distributed matrix multiplication fundamental limits and optimal coding"
    - "minimizing latency for secure coded computing using secret sharing via staircase codes"
    - "on the optimal recovery threshold of coded matrix multiplication"

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.CR(Cryptography and Security)