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: "science askscience and badscience on the coexistence of highly related communities"
  Abstract: When large social-media platforms allow users to easily form and self-organize into interest groups, highly related communities can arise. For example, the Reddit site hosts not just a group called food, but also HealthyFood, foodhacks, foodporn, and cooking, among others. Are these highly related communities created for similar classes of reasons (e.g., to focus on a subtopic, to create a place for allegedly more "high-minded" discourse, etc.)? How do users allocate attention between such close alternatives when they are available or emerge over time? Are there different types of relations between close alternatives such as sharing many users vs. a new community drawing away members of an older one vs. a splinter group failing to cohere into a viable separate community? We investigate the interactions between highly related communities using data from reddit.com consisting of 975M posts and comments spanning an 8-year period. We identify a set of typical affixes that users adopt to create highly related communities and build a taxonomy of affixes. One interesting finding regarding users' behavior is: after a newer community is created, for several types of highly-related community pairs, users that engage in a newer community tend to be more active in their original community than users that do not explore, even when controlling for previous level of engagement.

Connected through hyperedge HE-1 (induced by source paper "retrieving top weighted triangles in graphs"):
  with members:
    - "graph based semi supervised active learning for edge flows"
    - "simplicial closure and higher order link prediction"
    - "tiered sampling an efficient method for approximate counting sparse motifs in massive graph streams"
    - "edge based wedge sampling to estimate triangle counts in very large graphs"
    - "higher order organization of complex networks"
    - "a fast and provable method for estimating clique counts using tur an s theorem"
    - "approximately counting triangles in sublinear time"
    - "role discovery in networks"

Connected through hyperedge HE-2 (induced by source paper "firsthand opiates abuse on social media monitoring geospatial patterns of interest through a digital cohort"):
  with members:
    - "the anatomy of reddit an overview of academic research"
    - "caveat emptor computational social science large scale missing data in a widely published reddit corpus"
    - "twitter for sparking a movement reddit for sharing the moment metoo through the lens of social media"
    - "a web of hate tackling hateful speech in online social spaces"
    - "the impact of crowds on news engagement a reddit case study"
    - "query expansion with locally trained word embeddings"
    - "all who wander on the prevalence and characteristics of multi community engagement"
    - "navigating the massive world of reddit using backbone networks to map user interests in social media"

Connected through hyperedge HE-3 (induced by source paper "incentivized blockchain based social media platforms a case study of steemit"):
  with members:
    - "a puff of steem security analysis of decentralized content curation"
    - "the anatomy of reddit an overview of academic research"
    - "deep neural networks for bot detection"
    - "consumers and curators browsing and voting patterns on reddit"
    - "evidence of online performance deterioration in user sessions on reddit"
    - "the rise of social bots"
    - "all who wander on the prevalence and characteristics of multi community engagement"
    - "popularity and quality in social news aggregators a study of reddit and hacker news"

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 "a sampling framework for counting temporal motifs"):
  with members:
    - "a chronological edge driven approach to temporal subgraph isomorphism"
    - "motifs in temporal networks"
    - "enumerating maximal cliques in link streams with durations"
    - "when is a network a network multi order graphical model selection in pathways and temporal networks"
    - "higher order organization of complex networks"
    - "a fast and provable method for estimating clique counts using tur an s theorem"
    - "scalable motif aware graph clustering"
    - "approximately counting triangles in sublinear time"

Connected through hyperedge HE-6 (induced by source paper "caveat emptor computational social science large scale missing data in a widely published reddit corpus"):
  with members:
    - "the rise and fall of network stars analyzing 2 5 million graphs to reveal how high degree vertices emerge over time"
    - "cats and captions vs creators and the clock comparing multimodal content to context in predicting relative popularity"
    - "a web of hate tackling hateful speech in online social spaces"
    - "the impact of crowds on news engagement a reddit case study"
    - "analyzing complex network user arrival patterns and their effect on network topologies"
    - "averaging gone wrong using time aware analyses to better understand behavior"
    - "all who wander on the prevalence and characteristics of multi community engagement"
    - "what do vegans do in their spare time latent interest detection in multi community networks"

Connected through hyperedge HE-7 (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"
    - "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"
    - "evolution of reddit from the front page of the internet to a self referential community"
    - "the role of social networks in information diffusion"

Connected through hyperedge HE-8 (induced by source paper "making fetch happen the influence of social and linguistic context on nonstandard word growth and decline"):
  with members:
    - "simple models for word formation in english slang"
    - "caveat emptor computational social science large scale missing data in a widely published reddit corpus"
    - "the road to success assessing the fate of linguistic innovations in online communities"
    - "demographic dialectal variation in social media a case study of african american english"
    - "all who wander on the prevalence and characteristics of multi community engagement"
    - "niche as a determinant of word fate in online groups"

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)