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: "http mailbox asynchronous restful communication"
  Abstract: We describe HTTP Mailbox, a mechanism to enable RESTful HTTP communication in an asynchronous mode with a full range of HTTP methods otherwise unavailable to standard clients and servers. HTTP Mailbox allows for broadcast and multicast semantics via HTTP. We evaluate a reference implementation using ApacheBench (a server stress testing tool) demonstrating high throughput (on 1,000 concurrent requests) and a systemic error rate of 0.01%. Finally, we demonstrate our HTTP Mailbox implementation in a human assisted web preservation application called "Preserve Me".

Connected through hyperedge HE-1 (induced by source paper "archive assisted archival fixity verification framework"):
  with members:
    - "mementomap framework for flexible and adaptive web archive profiling"
    - "difficulties of timestamping archived web pages"
    - "making digital artifacts on the web verifiable and reliable"
    - "decentralized trusted timestamping using the crypto currency bitcoin"
    - "trusty uris verifiable immutable and permanent digital artifacts for linked data"
    - "memento time travel for the web"
    - "preserving peer replicas by rate limited sampled voting"

Connected through hyperedge HE-2 (induced by source paper "support for various http methods on the web"):
  with members:
    - "how much of the web is archived"

Connected through hyperedge HE-3 (induced by source paper "when should i make preservation copies of myself"):
  with members:
    - "resurrecting my revolution using social link neighborhood in bringing context to the disappearing web"
    - "the mellon fedora project digital library architecture meets xml and web services"
    - "analysis of graphs for digital preservation suitability"
    - "from random graph to small world by wandering"
    - "object re use exchange a resource centric approach"
    - "adore a modular standards based digital object repository"
    - "requirements for digital preservation systems a bottom up approach"

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.SE(Software Engineering)