human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "truffle tests for free replaying ethereum smart contracts for transparency"):
  Abstract: The Ethereum blockchain is essentially a globally replicated public database. Programs called smart contracts can access this database. Over 10 million smart contracts have been deployed on the Ethereum blockchain. Executing a method of a smart contract generates a transaction that is also stored on the blockchain. There are over 1 billion Ethereum transactions to date. Smart contracts that are transparent about their function are more successful than opaque contracts. We have therefore developed a tool (ContractVis) to explore the transparency of smart contracts. The tool generates a replay script for the historic transactions of a smart contract. The script executes the transactions with the same arguments as recorded on the blockchain, but in a minimal test environment. Running a replay script provides insights into the contract, and insights into the blockchain explorer that was used to retrieve the contract and its history. We provide five concrete recommendations for blockchain explorers like Etherscan to improve the transparency of smart contracts.

Includes members:
  Member "probabilistic smart contracts secure randomness on the blockchain":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "testing smart contracts gets smarter")
  Member "finding the greedy prodigal and suicidal contracts at scale":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "an overview on smart contracts challenges advances and platforms")
  Member "detecting token systems on ethereum":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "a true concurrent model of smart contracts executions")
  Member "contractfuzzer fuzzing smart contracts for vulnerability detection":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "smart contract development from the perspective of developers topics and issues discussed on social media")
  Member "rethinking blockchain security position paper":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "a survey on ethereum systems security vulnerabilities attacks and defenses")
  Member "securify practical security analysis of smart contracts":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "an overview on smart contracts challenges advances and platforms")
  Member "new kids on the block an analysis of modern blockchains":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "exploring the attack surface of blockchain a systematic overview")

Question: Please tell me which class the source paper 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.SE(Software Engineering)