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: "ipfs content addressed versioned p2p file system"
  Abstract: The InterPlanetary File System (IPFS) is a peer-to-peer distributed file system that seeks to connect all computing devices with the same system of files. In some ways, IPFS is similar to the Web, but IPFS could be seen as a single BitTorrent swarm, exchanging objects within one Git repository. In other words, IPFS provides a high throughput content-addressed block storage model, with content-addressed hyper links. This forms a generalized Merkle DAG, a data structure upon which one can build versioned file systems, blockchains, and even a Permanent Web. IPFS combines a distributed hashtable, an incentivized block exchange, and a self-certifying namespace. IPFS has no single point of failure, and nodes do not need to trust each other.

Connected through hyperedge HE-1 (induced by source paper "are distributed ledger technologies ready for smart transportation systems"):
  with members:
    - "likestarter a smart contract based social dao for crowdfunding"
    - "a distributed ledger based infrastructure for smart transportation system and social good"
    - "on the ethereum blockchain structure a complex networks theory perspective"
    - "orchestrating product provenance story when iota ecosystem meets the electronics supply chain space"
    - "a blockchain based flight data recorder for cloud accountability"
    - "iota feasibility and perspectives for enabling vehicular applications"
    - "blackchain scalability for resource constrained accountable vehicle to x communication"
    - "multi level simulation of internet of things on smart territories"

Connected through hyperedge HE-2 (induced by source paper "trends in development of databases and blockchain"):
  with members:
    - "chainifydb how to blockchainify any data management system"
    - "blockchain meets database design and implementation of a blockchain relational database"
    - "sok of used cryptography in blockchain"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "vchain enabling verifiable boolean range queries over blockchain databases"

Connected through hyperedge HE-3 (induced by source paper "infnote a decentralized information sharing platform based on blockchain"):
  with members:
    - "network traffic obfuscation and automated internet censorship"
    - "cryptocurrencies without proof of work"
    - "dimming the internet detecting throttling as a mechanism of censorship in iran"

Connected through hyperedge HE-4 (induced by source paper "mapping the interplanetary filesystem"):
  with members:
    - "eclipsing ethereum peers with false friends"
    - "a survey on essential components of a self sovereign identity"

Connected through hyperedge HE-5 (induced by source paper "decentralization in digital societies a design paradox"):
  with members:
    - "a taxonomy and survey of energy efficient data centers and cloud computing systems"

Connected through hyperedge HE-6 (induced by source paper "blockchain technologies for the internet of things research issues and challenges"):
  with members:
    - "a survey on the security of blockchain systems"
    - "a delay tolerant payment scheme based on the ethereum blockchain"
    - "towards trusted social networks with blockchain technology"
    - "a survey on security and privacy issues of bitcoin"
    - "an empirical analysis of linkability in the monero blockchain"
    - "blockchain a distributed solution to automotive security and privacy"
    - "teechain a secure asynchronous blockchain payment network"
    - "from pretty good to great enhancing pgp using bitcoin and the blockchain"

Connected through hyperedge HE-7 (induced by source paper "privacy preserving blockchain mining sybil resistance by proof of useful work"):
  with members:
    - "secure computation for machine learning with spdz"
    - "a scalable verification solution for blockchains"
    - "dfinity technology overview series consensus system"
    - "trustless machine learning contracts evaluating and exchanging machine learning models on the ethereum blockchain"
    - "consensus in the age of blockchains"
    - "enhancing bitcoin security and performance with strong consistency via collective signing"
    - "bitcoin ng a scalable blockchain protocol"
    - "enigma decentralized computation platform with guaranteed privacy"

Connected through hyperedge HE-8 (induced by source paper "gdpr compliant personal data management a blockchain based solution"):
  with members:
    - "a survey on consensus mechanisms and mining strategy management in blockchain networks"
    - "hyperledger fabric a distributed operating system for permissioned blockchains"
    - "towards blockchain based auditable storage and sharing of iot data"
    - "a blockchain based approach for data accountability and provenance tracking"
    - "blockbench a framework for analyzing private blockchains"
    - "untangling blockchain a data processing view of blockchain systems"
    - "xft practical fault tolerance beyond crashes"

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.NI(Networking and Internet Architecture)