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 "building and querying semantic layers for web archives extended version"):
  Abstract: Web archiving is the process of collecting portions of the Web to ensure that the information is preserved for future exploitation. However, despite the increasing number of web archives worldwide, the absence of efficient and meaningful exploration methods still remains a major hurdle in the way of turning them into a usable and useful information source. In this paper, we focus on this problem and propose an RDF/S model and a distributed framework for building semantic profiles (“layers”) that describe semantic information about the contents of web archives. A semantic layer allows describing metadata information about the archived documents, annotating them with useful semantic information (like entities, concepts, and events), and publishing all these data on the Web as Linked Data. Such structured repositories offer advanced query and integration capabilities, and make web archives directly exploitable by other systems and tools. To demonstrate their query capabilities, we build and query semantic layers for three different types of web archives. An experimental evaluation showed that a semantic layer can answer information needs that existing keyword-based systems are not able to sufficiently satisfy.

Includes members:
  Member "towards a ranking model for semantic layers over digital archives":
    also connected through other hyperedges:
      (none)
  Member "extracting event centric document collections from large scale web archives":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "data4urbanmobility towards holistic data analytics for mobility applications in urban regions")
  Member "tempas temporal archive search based on tags":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "ranking archived documents for structured queries on semantic layers")
  Member "can we find documents in web archives without knowing their contents":
    also connected through other hyperedges:
      (none)
  Member "how to search the internet archive without indexing it":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "making recommendations from web archives for lost web pages")
  Member "expedition a time aware exploratory search system designed for scholars":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "ranking archived documents for structured queries on semantic layers")
  Member "history by diversity helping historians search news archives":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "eventkg the hub of event knowledge on the web and biographical timeline generation")
  Member "archivespark efficient web archive access extraction and derivation":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "the archives unleashed project technology process and community to improve scholarly access to web archives")

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.DL(Digital Libraries)