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: "a hazard analysis technique for additive manufacturing"
  Abstract: The promise of Additive Manufacturing (AM) includes reduced transportation and warehousing costs, reduction of source material waste, and reduced environmental impact. AM is extremely useful for making prototypes and has demonstrated the ability to manufacture complex parts not possible (or prohibitively expensive) with conventional machining. Scientists and manufactures are finding increased uses for AM in creation of all types of finished products including those built from polymers, biological material, and metals. Although companies such as GE have been using 3D printing for Additive Manufacturing for over thirty years to make mandrels for light bulb manufacturing, application areas of Additive Manufacturing have increased substantially in recent years, particularly due to the reduction in cost of 3D printers. Like most emergent technologies, there are bound to be growing pains with AM. This paper looks at the software that supports AM and 3D printing and their vulnerability to cyber-attacks, intellectual property theft, defect rates of AM software (which can cause undesired consequences themselves and also create vulnerabilities that a hacker may exploit), part reliability and safety of devices incorporating 3D printed parts (when making mission critical parts), and security/throughput issues of computer networks. Literature searches, consulting with technical experts and a relatively new hazard analysis technique will be used, one especially developed for software intensive systems called Systemic Theoretic Process Analysis (STPA). The purpose of this white paper is to identify risks (or hazards for mission critical parts) for AM in this emergent stage so that mitigations can be applied before accidents occur. A second purpose of this white paper is to evaluate the effectiveness of STPA as a hazard analysis technique in a field that is still relatively new.

Connected through hyperedge HE-1 (induced by source paper "detecting cyber physical attacks in additive manufacturing using digital audio signing"):
  with members:
    - "towards security of additive layer manufacturing"
    - "dr0wned cyber physical attack with additive manufacturing"

Connected through hyperedge HE-2 (induced by source paper "power consumption based detection of sabotage attacks in additive manufacturing"):
  with members:
    - "dr0wned cyber physical attack with additive manufacturing"

Connected through hyperedge HE-3 (induced by source paper "dr0wned cyber physical attack with additive manufacturing"):
  with members:
    - "towards security of additive layer manufacturing"

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)