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: "myadchoices bringing transparency and control to online advertising"
  Abstract: The intrusiveness and the increasing invasiveness of online advertising have, in the last few years, raised serious concerns regarding user privacy and Web usability. As a reaction to these concerns, we have witnessed the emergence of a myriad of ad-blocking and anti-tracking tools, whose aim is to return control to users over advertising. The problem with these technologies, however, is that they are extremely limited and radical in their approach: users can only choose either to block or allow all ads. With around 200 million people regularly using these tools, the economic model of the Web ---in which users get content free in return for allowing advertisers to show them ads--- is at serious peril. In this paper, we propose a smart Web technology that aims at bringing transparency to online advertising, so that users can make an informed and equitable decision regarding ad blocking. The proposed technology is implemented as a Web-browser extension and enables users to exert fine-grained control over advertising, thus providing them with certain guarantees in terms of privacy and browsing experience, while preserving the Internet economic model. Experimental results in a real environment demonstrate the suitability and feasibility of our approach, and provide preliminary findings on behavioral targeting from real user browsing profiles.

Connected through hyperedge HE-1 (induced by source paper "discrimination through optimization how facebook s ad delivery can lead to biased outcomes"):
  with members:
    - "quantifying the impact of user attention on fair group representation in ranked lists"
    - "preference informed fairness"
    - "facebook s advertising platform new attack vectors and the need for interventions"
    - "fairness under composition"
    - "quantifying search bias investigating sources of bias for political searches in social media"
    - "man is to computer programmer as woman is to homemaker debiasing word embeddings"
    - "automated experiments on ad privacy settings a tale of opacity choice and discrimination"
    - "xray enhancing the web s transparency with differential correlation"

Connected through hyperedge HE-2 (induced by source paper "beyond content analysis detecting targeted ads via distributed counting"):
  with members:
    - "on microtargeting socially divisive ads a case study of russia linked ad campaigns on facebook"
    - "tracing information flows between ad exchanges using retargeted ads"
    - "building a rappor with the unknown privacy preserving learning of associations and data dictionaries"
    - "efficient private statistics with succinct sketches"
    - "i always feel like somebody s watching me measuring online behavioural advertising"
    - "adscape harvesting and analyzing online display ads"
    - "automated experiments on ad privacy settings a tale of opacity choice and discrimination"
    - "xray enhancing the web s transparency with differential correlation"

Connected through hyperedge HE-3 (induced by source paper "fairy a framework for understanding relationships between users actions and their social feeds"):
  with members:
    - "xray enhancing the web s transparency with differential correlation"
    - "rex explaining relationships between entity pairs"
    - "query chains learning to rank from implicit feedback"

Connected through hyperedge HE-4 (induced by source paper "talon an automated framework for cross device tracking detection"):
  with members:
    - "cookie synchronization everything you always wanted to know but were afraid to ask"
    - "no more chasing waterfalls a measurement study of the header bidding ad ecosystem"
    - "tracing information flows between ad exchanges using retargeted ads"
    - "cross device tracking matching devices and cookies"
    - "i always feel like somebody s watching me measuring online behavioural advertising"

Connected through hyperedge HE-5 (induced by source paper "large scale analysis of user exposure to online advertising in facebook"):
  with members:
    - "i always feel like somebody s watching me measuring online behavioural advertising"
    - "adscape harvesting and analyzing online display ads"
    - "real time bidding for online advertising measurement and analysis"
    - "a quantitative measure of fairness and discrimination for resource allocation in shared computer systems"

Connected through hyperedge HE-6 (induced by source paper "optimized direct sale of privacy in personal data marketplaces"):
  with members:
    - "you never surf alone ubiquitous tracking of users browsing habits"
    - "a theory of pricing private data"
    - "a market for unbiased private data paying individuals according to their privacy attitudes"
    - "conducting truthful surveys cheaply"
    - "take it or leave it running a survey when privacy comes at a cost"
    - "approximately optimal auctions for selling privacy when costs are correlated with data"
    - "privacy auctions for recommender systems"
    - "selling privacy at auction"

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.CY(Computers and Society)