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: "evolution of reddit from the front page of the internet to a self referential community"
  Abstract: In the past few years, Reddit -- a community-driven platform for submitting, commenting and rating links and text posts -- has grown exponentially, from a small community of users into one of the largest online communities on the Web. To the best of our knowledge, this work represents the most comprehensive longitudinal study of Reddit's evolution to date, studying both (i) how user submissions have evolved over time and (ii) how the community's allocation of attention and its perception of submissions have changed over 5 years based on an analysis of almost 60 million submissions. Our work reveals an ever-increasing diversification of topics accompanied by a simultaneous concentration towards a few selected domains both in terms of posted submissions as well as perception and attention. By and large, our investigations suggest that Reddit has transformed itself from a dedicated gateway to the Web to an increasingly self-referential community that focuses on and reinforces its own user-generated image- and textual content over external sources.

Connected through hyperedge HE-1 (induced by source paper "characterizing behavioral trends in a community driven discussion platform"):
  with members:
    - "analyzing behavioral trends in community driven discussion platforms like reddit"
    - "caveat emptor computational social science large scale missing data in a widely published reddit corpus"
    - "consumers and curators browsing and voting patterns on reddit"
    - "predicting user interactions on reddit"
    - "rating effects on social news posts and comments"
    - "popularity and quality in social news aggregators a study of reddit and hacker news"
    - "controversy and sentiment in online news"

Connected through hyperedge HE-2 (induced by source paper "temporal analysis of reddit networks via role embeddings"):
  with members:
    - "struc2vec learning node representations from structural identity"
    - "offline bilingual word vectors orthogonal transformations and the inverted softmax"
    - "a comprehensive survey of graph embedding problems techniques and applications"
    - "loyalty in online communities"
    - "node2vec scalable feature learning for networks"
    - "learning convolutional neural networks for graphs"
    - "diachronic word embeddings reveal statistical laws of semantic change"
    - "man is to computer programmer as woman is to homemaker debiasing word embeddings"

Connected through hyperedge HE-3 (induced by source paper "drifts and shifts characterizing the evolution of users interests on reddit"):
  with members:
    - "poprank ranking pages impact and users engagement on facebook"
    - "the anatomy of reddit an overview of academic research"
    - "debunking in a world of tribes"
    - "all who wander on the prevalence and characteristics of multi community engagement"
    - "novelty and collective attention"

Connected through hyperedge HE-4 (induced by source paper "the anatomy of reddit an overview of academic research"):
  with members:
    - "modelling structure and predicting dynamics of discussion threads in online boards"
    - "the aftermath of disbanding an online hateful community"
    - "tracing community genealogy how new communities emerge from the old"
    - "community interaction and conflict on the web"
    - "caveat emptor computational social science large scale missing data in a widely published reddit corpus"
    - "on the origins of memes by means of fringe web communities"
    - "conversation modeling on reddit using a graph structured lstm"
    - "identifying the social signals that drive online discussions a case study of reddit communities"

Connected through hyperedge HE-5 (induced by source paper "tracing community genealogy how new communities emerge from the old"):
  with members:
    - "caveat emptor computational social science large scale missing data in a widely published reddit corpus"
    - "community identity and user engagement in a multi community landscape"
    - "loyalty in online communities"
    - "science askscience and badscience on the coexistence of highly related communities"
    - "averaging gone wrong using time aware analyses to better understand behavior"
    - "all who wander on the prevalence and characteristics of multi community engagement"
    - "can cascades be predicted"
    - "the role of social networks in information diffusion"

Connected through hyperedge HE-6 (induced by source paper "mobilizing the trump train understanding collective action in a political trolling community"):
  with members:
    - "an army of me sockpuppets in online discussion communities"
    - "kek cucks and god emperor trump a measurement study of 4chan s politically incorrect forum and its effects on the web"
    - "botivist calling volunteers to action using online bots"
    - "antisocial behavior in online discussion communities"
    - "participatory militias an analysis of an armed movement s online audience"
    - "how to ask for a favor a case study on the success of altruistic requests"

Connected through hyperedge HE-7 (induced by source paper "geocoding without geotags a text based approach for reddit"):
  with members:
    - "a neural model for user geolocation and lexical dialectology"
    - "multiview deep learning for predicting twitter users location"
    - "exploiting text and network context for geolocation of social media users"
    - "a survey of location inference techniques on twitter"

Connected through hyperedge HE-8 (induced by source paper "analyzing behavioral trends in community driven discussion platforms like reddit"):
  with members:
    - "consumers and curators browsing and voting patterns on reddit"
    - "predicting user interactions on reddit"
    - "rating effects on social news posts and comments"
    - "popularity and quality in social news aggregators a study of reddit and hacker news"

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.SI(Social and Information Networks)