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: "do linguistic style and readability of scientific abstracts affect their virality"
  Abstract: Reactions to textual content posted in an online social network show different dynamics depending on the linguistic style and readability of the submitted content. Do similar dynamics exist for responses to scientific articles? Our intuition, supported by previous research, suggests that the success of a scientific article depends on its content, rather than on its linguistic style. In this article, we examine a corpus of scientific abstracts and three forms of associated reactions: article downloads, citations, and bookmarks. Through a class-based psycholinguistic analysis and readability indices tests, we show that certain stylistic and readability features of abstracts clearly concur in determining the success and viral capability of a scientific article.

Connected through hyperedge HE-1 (induced by source paper "why do urban legends go viral"):
  with members:
    - "exploring text virality in social networks"
    - "assessing sentiment strength in words prior polarities"
    - "you had me at hello how phrasing affects memorability"
    - "finding deceptive opinion spam by any stretch of the imagination"
    - "information contagion an empirical study of the spread of news on digg and twitter social networks"
    - "analysis of social voting patterns on digg"
    - "more accurate tests for the statistical significance of result differences"

Connected through hyperedge HE-2 (induced by source paper "natural language processing for mental health large scale discourse analysis of counseling conversations"):
  with members:
    - "how to ask for a favor a case study on the success of altruistic requests"
    - "distributed representations of words and phrases and their compositionality"
    - "echoes of power language effects and power differences in social interaction"
    - "catching the drift probabilistic content models with applications to generation and summarization"

Connected through hyperedge HE-3 (induced by source paper "deep feelings a massive cross lingual study on the relation between emotions and virality"):
  with members:
    - "depechemood a lexicon for emotion analysis from crowd annotated news"
    - "anger is more influential than joy sentiment correlation in weibo"
    - "the role of emotions in propagating brands in social networks"
    - "how to ask for a favor a case study on the success of altruistic requests"
    - "the effect of wording on message propagation topic and author controlled natural experiments on twitter"
    - "exploring image virality in google plus"
    - "the untold story of the clones content agnostic factors that impact youtube video popularity"
    - "exploring text virality in social networks"

Connected through hyperedge HE-4 (induced by source paper "all who wander on the prevalence and characteristics of multi community engagement"):
  with members:
    - "evolution of reddit from the front page of the internet to a self referential community"
    - "how community feedback shapes user behavior"
    - "the untold story of the clones content agnostic factors that impact youtube video popularity"
    - "exploring text virality in social networks"
    - "you had me at hello how phrasing affects memorability"
    - "good friends bad news affect and virality in twitter"
    - "on the interplay between social and topical structure"
    - "mark my words linguistic style accommodation in social media"

Connected through hyperedge HE-5 (induced by source paper "echoes of persuasion the effect of euphony in persuasive communication"):
  with members:
    - "how to ask for a favor a case study on the success of altruistic requests"
    - "the effect of wording on message propagation topic and author controlled natural experiments on twitter"
    - "the untold story of the clones content agnostic factors that impact youtube video popularity"
    - "exploring text virality in social networks"
    - "you had me at hello how phrasing affects memorability"

Connected through hyperedge HE-6 (induced by source paper "lifespan and propagation of information in on line social networks a case study"):
  with members:
    - "predicting the temporal dynamics of information diffusion in social networks"
    - "exploring text virality in social networks"
    - "the role of social networks in information diffusion"
    - "topic diffusion and emergence of virality in social networks"
    - "good friends bad news affect and virality in twitter"
    - "influence and passivity in social media"

Connected through hyperedge HE-7 (induced by source paper "the effect of wording on message propagation topic and author controlled natural experiments on twitter"):
  with members:
    - "the untold story of the clones content agnostic factors that impact youtube video popularity"
    - "exploring text virality in social networks"
    - "you had me at hello how phrasing affects memorability"
    - "good friends bad news affect and virality in twitter"
    - "on the interplay between social and topical structure"

Connected through hyperedge HE-8 (induced by source paper "exploring image virality in google plus"):
  with members:
    - "exploring text virality in social networks"
    - "you had me at hello how phrasing affects memorability"
    - "information contagion an empirical study of the spread of news on digg and twitter social networks"
    - "analysis of social voting patterns on digg"

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)