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: "comments on dual rail asynchronous logic multi level implementation"
  Abstract: In this research communication, we comment on "Dual-rail asynchronous logic multi-level implementation" Integration, the VLSI Journal 47 (2014) 148-159 by expounding the problematic issues, and provide some clarifications on delay-insensitivity, robust asynchronous logic, multi-level decomposition, and physical implementation. Comments on "Dual-rail asynchronous logic multi-level implementation" are provided.Incorrect interpretation of disjoint sum-of-products (DSOP) form is clarified.Possibility for the occurrence of deadlock condition is elucidated.Problems with completion detection are described.Naive and incorrect decomposition of NAND gates in the function block is explained.

Connected through hyperedge HE-1 (induced by source paper "performance comparison of quasi delay insensitive asynchronous adders"):
  with members:
    - "performance comparison of some synchronous adders"
    - "asynchronous ripple carry adder based on area optimized early output dual bit full adder"
    - "latency optimized asynchronous early output ripple carry adder based on delay insensitive dual rail data encoding"
    - "a critique on asynchronous logic implementation based on factorized dims"
    - "asynchronous early output section carry based carry lookahead adder with alias carry logic"
    - "asynchronous early output dual bit full adders based on homogeneous and heterogeneous delay insensitive data encoding"
    - "area latency optimized early output asynchronous full adders and relative timed ripple carry adders"
    - "an asynchronous early output full adder and a relative timed ripple carry adder"

Connected through hyperedge HE-2 (induced by source paper "speed and energy optimised quasi delay insensitive block carry lookahead adder"):
  with members:
    - "asynchronous early output section carry based carry lookahead adder with alias carry logic"
    - "area latency optimized early output asynchronous full adders and relative timed ripple carry adders"

Connected through hyperedge HE-3 (induced by source paper "a critique on asynchronous logic implementation based on factorized dims"):
  with members:
    - "latency optimized asynchronous early output ripple carry adder based on delay insensitive dual rail data encoding"
    - "asynchronous early output section carry based carry lookahead adder with alias carry logic"
    - "asynchronous early output dual bit full adders based on homogeneous and heterogeneous delay insensitive data encoding"
    - "global versus local weak indication self timed function blocks a comparative analysis"
    - "area latency optimized early output asynchronous full adders and relative timed ripple carry adders"
    - "early output hybrid input encoded asynchronous full adder and relative timed ripple carry adder"
    - "an asynchronous early output full adder and a relative timed ripple carry adder"

Connected through hyperedge HE-4 (induced by source paper "latency optimized asynchronous early output ripple carry adder based on delay insensitive dual rail data encoding"):
  with members:
    - "asynchronous early output dual bit full adders based on homogeneous and heterogeneous delay insensitive data encoding"
    - "area latency optimized early output asynchronous full adders and relative timed ripple carry adders"
    - "early output hybrid input encoded asynchronous full adder and relative timed ripple carry adder"
    - "an asynchronous early output full adder and a relative timed ripple carry adder"

Connected through hyperedge HE-5 (induced by source paper "asynchronous early output dual bit full adders based on homogeneous and heterogeneous delay insensitive data encoding"):
  with members:
    - "global versus local weak indication self timed function blocks a comparative analysis"
    - "early output hybrid input encoded asynchronous full adder and relative timed ripple carry adder"

Connected through hyperedge HE-6 (induced by source paper "an asynchronous early output full adder and a relative timed ripple carry adder"):
  with members:
    - "global versus local weak indication self timed function blocks a comparative analysis"

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.ET(Emerging Technologies)