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: "socialdtn a dtn implementation for digital and social inclusion"
  Abstract: Despite of the importance of access to computers and to the Internet for the development of people and their inclusion in society, there are people that still suffer with digital divide and social exclusion. Delay/Disruption-Tolerant Networking (DTN) can provide the technical support for the digital/social inclusion of these people as it allows opportunistic and asynchronous communication, which does not depend upon networking infrastructure. We introduce SocialDTN, an implementation of the DTN architecture for Android devices that operates over Bluetooth and aims to take advantages of users' social daily routines to improve data forwarding. As we want to exploit the social proximity and interactions existing among users, SocialDTN considers a social-aware opportunistic routing proposal,dLife, instead of the well-known (but social-oblivious) PROPHET. Some preliminary field experimentations are explained based on the direct delivery of content.

Connected through hyperedge HE-1 (induced by source paper "impact of human behavior on social opportunistic forwarding"):
  with members:
    - "assessment model for opportunistic routing"
    - "improving the delivery rate of digital inclusion applications for amazon riverside communities by using an integrated bluetooth dtn architecture"
    - "social aware opportunistic routing the new trend"
    - "social aware opportunistic routing protocol based on user s interactions and interests"
    - "opportunistic routing based on daily routines"
    - "assessment model for opportunistic routing"

Connected through hyperedge HE-2 (induced by source paper "improving the delivery rate of digital inclusion applications for amazon riverside communities by using an integrated bluetooth dtn architecture"):
  with members:
    - "opportunistic routing based on daily routines"

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)