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: "foundation for genuine global identities"
  Abstract: About 1Bn people around the globe are born and live without identity documents. In addition, displaced people, projected at 1Bn within a generation, often find themselves without worthy identity documentation even if they had any in their country of origin. #R##N#Given that centralized, top-down identity-granting solutions are failing a large portion of the world population, a bottom-up, grassroots, decentralized solution that allows every human being to create and own a trustworthy \emph{genuine global identity} is an urgent necessity. Such a bottom-up solution is worthy only if it is resilient to malicious antagonists that create fake and duplicate identities (so called \emph{sybils}). Furthermore, for a solution to be truly grassroots, the people that rely on it for their global identity should also be its sovereign. Hence its governance has to be sybil-resilient as well. #R##N#Here, we present a foundation for a decentralized, grassroots, bottom-up, self-sovereign process in which every human being may easily create and own a genuine global identity, realized as a public key. The solution relies on the formation of a "Web of Trust" among global identities, but does not rely on biometrics, nor does it require to store any personal information on public or even third-party storage, except for the public key itself. The approach is designed for natural realization using distributed ledger/blockchain technology. For the solution to be complete, additional components are needed, including a mechanism that encourages honest behavior and an egalitarian cryptocurrency to fuel the mechanism. These are a subject for future research.

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.MA(Multiagent Systems)