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 "the elusive internet flattening 10 years of ixp growth"):
  Abstract: Over the past decade, Internet eXchange Points (IXPs) have been playing a key role in enabling interdomain connectivity. Their traffic volumes have quickly become similar to those of Tier-1 ASes and their physical presence has spread across the world. While the relevance of IXPs is undeniable, their contribution to the shaping of the current Internet is not fully understood yet, especially on the so-called "flattening" phenomenon. In this paper, we disentangle "flattening" from "path-shortening": we show that the impact of IXPs on path length is limited. Surprisingly, Internet path-lengths have globally barely decreased over the last decade, regardless of whether they cross IXPs or not. Instead of a "path-shortening", we observe a diversion of the routes away from the central Tier-1 ASes, supported by IXPs. This diversion has however not fundamentally changed the existence of a hierarchy, but rather replaced the central Tier-1s with a new set of players.

Includes members:
  Member "open connect everywhere a glimpse at the internet ecosystem through the lens of the netflix cdn":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "popnetcod a popularity based caching policy for network coding enabled named data networking")
  Member "traixroute detecting ixps in traceroute paths":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "shaping the internet 10 years of ixp growth")

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.NI(Networking and Internet Architecture)