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: "senx sound patch generation for security vulnerabilities"
  Abstract: Many techniques have been proposed for automatic patch generation and the overwhelming majority of them rely on the quality of test suites to prove the correctness of the patches that they generate. However, the quality of test suites is usually undesirable and hence the quality of the patches is ill-suited for security vulnerabilities. To address this, we propose an approach that generates patches by following the proved working strategy utilized by human developers in fixing security vulnerabilities, which relies on a sound analysis of the nature of a vulnerability rather than the quality of test suites for the correctness of the patches. #R##N#In this paper, we present the design of our approach to fixing buffer overflow and integer overflow vulnerabilities. It is enabled by the combination of two novel techniques: loop analysis and symbolic expression translation. They mimic the analysis performed by human developers to develop patches for buffer overflows and integer overflows. To ensure the safety of our patches, the two techniques are built on top of sound dataflow analysis, coupled with concolic execution. #R##N#We have implemented a prototype called Senx using this approach. Our evaluation on Senx shows that the two techniques are effective and applicable to a myriad of different programs. Our evaluation shows that the patches generated by Senx successfully fix 33 of 42 real-world buffer overflows and integer overflows from a variety of 11 applications including various tools or libraries for manipulating graphics/media files, a programming language interpreter, a relational database engine, a collection of programming tools for creating and managing binary programs, and a collection of basic file, shell, and text manipulation tools.

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.CR(Cryptography and Security)