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: "benchmarking the capabilities and limitations of sat solvers in defeating obfuscation schemes"
  Abstract: In this paper, we investigate the strength of six different SAT solvers in attacking various obfuscation schemes. Our investigation revealed that Glucose and Lingeling SAT solvers are generally suited for attacking small-to-midsize obfuscated circuits, while the MapleGlucose, if the system is not memory bound, is best suited for attacking mid-to-difficult obfuscation methods. Our experimental result indicates that when dealing with extremely large circuits and very difficult obfuscation problems, the SAT solver may be memory bound, and Lingeling, for having the most memory efficient implementation, is the best-suited solver for such problems. Additionally, our investigation revealed that SAT solver execution times may vary widely across different SAT solvers. Hence, when testing the hardness of an obfuscation method, although the increase in difficulty could be verified by one SAT solver, the pace of increase in difficulty is dependent on the choice of a SAT solver.

Connected through hyperedge HE-1 (induced by source paper "dfssd deep faults and shallow state duality a provably strong obfuscation solution for circuits with restricted access to scan chain"):
  with members:
    - "sat hard cyclic logic obfuscation for protecting the ip in the manufacturing supply chain"
    - "functional analysis attacks on logic locking"
    - "is robust design for security robust enough attack on locked circuits with restricted scan chain access"
    - "coma communication and obfuscation management architecture"
    - "threats on logic locking a decade later"
    - "lut lock a novel lut based logic obfuscation for fpga bitstream and asic hardware protection"
    - "encrypt flip flop a novel logic encryption technique for sequential circuits"

Connected through hyperedge HE-2 (induced by source paper "sat hard cyclic logic obfuscation for protecting the ip in the manufacturing supply chain"):
  with members:
    - "functional analysis attacks on logic locking"
    - "coma communication and obfuscation management architecture"
    - "threats on logic locking a decade later"
    - "srclock sat resistant cyclic logic locking for protecting the hardware"
    - "lut lock a novel lut based logic obfuscation for fpga bitstream and asic hardware protection"

Connected through hyperedge HE-3 (induced by source paper "estimating the circuit deobfuscating runtime based on graph deep learning"):
  with members:
    - "srclock sat resistant cyclic logic locking for protecting the hardware"
    - "learning a sat solver from single bit supervision"
    - "rational neural networks for approximating jump discontinuities of graph convolution operator"
    - "semi supervised classification with graph convolutional networks"
    - "convolutional neural networks on graphs with fast localized spectral filtering"
    - "the emerging field of signal processing on graphs extending high dimensional data analysis to networks and other irregular domains"

Connected through hyperedge HE-4 (induced by source paper "coma communication and obfuscation management architecture"):
  with members:
    - "functional analysis attacks on logic locking"
    - "threats on logic locking a decade later"
    - "srclock sat resistant cyclic logic locking for protecting the hardware"
    - "sail machine learning guided structural analysis attack on hardware obfuscation"
    - "lut lock a novel lut based logic obfuscation for fpga bitstream and asic hardware protection"

Connected through hyperedge HE-5 (induced by source paper "threats on logic locking a decade later"):
  with members:
    - "functional analysis attacks on logic locking"
    - "srclock sat resistant cyclic logic locking for protecting the hardware"
    - "lut lock a novel lut based logic obfuscation for fpga bitstream and asic hardware protection"

Connected through hyperedge HE-6 (induced by source paper "pyramid machine learning framework to estimate the optimal timing and resource usage of a high level synthesis design"):
  with members:
    - "machine learning based routing congestion prediction in fpga high level synthesis"
    - "tensorflow a system for large scale machine learning"
    - "coarse grain performance estimator for heterogeneous parallel computing architectures like zynq all programmable soc"

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)