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 high performance triple patterning layout decomposer with balanced density"
  Abstract: Triple patterning lithography (TPL) has received more and more attentions from industry as one of the leading candidate for 14nm/11nm nodes. In this paper, we propose a high performance layout decomposer for TPL. Density balancing is seamlessly integrated into all key steps in our TPL layout decomposition, including density-balanced semi-definite programming (SDP), density-based mapping, and density-balanced graph simplification. Our new TPL decomposer can obtain high performance even compared to previous state-of-the-art layout decomposers which are not balanced-density aware, e.g., by Yu et al. (ICCAD'11), Fang et al. (DAC'12), and Kuang et al. (DAC'13). Furthermore, the balanced-density version of our decomposer can provide more balanced density which leads to less edge placement error (EPE), while the conflict and stitch numbers are still very comparable to our non-balanced-density baseline.

Connected through hyperedge HE-1 (induced by source paper "openmpl an open source layout decomposer"):
  with members:
    - "layout decomposition for quadruple patterning lithography and beyond"
    - "triple patterning lithography tpl layout decomposition using end cutting"
    - "layout decomposition for double patterning lithography"

Connected through hyperedge HE-2 (induced by source paper "layout decomposition for quadruple patterning lithography and beyond"):
  with members:
    - "methodology for standard cell compliance and detailed placement for triple patterning lithography"
    - "triple patterning lithography tpl layout decomposition using end cutting"
    - "layout decomposition for double patterning lithography"
    - "approximate graph coloring by semidefinite programming"

Connected through hyperedge HE-3 (induced by source paper "methodology for standard cell compliance and detailed placement for triple patterning lithography"):
  with members:
    - "self aligned double patterning friendly configuration for standard cell library considering placement impact"
    - "triple patterning lithography tpl layout decomposition using end cutting"
    - "triad a triple patterning lithography aware detailed router"
    - "layout decomposition for double patterning lithography"

Connected through hyperedge HE-4 (induced by source paper "triple patterning lithography tpl layout decomposition using end cutting"):
  with members:
    - "layout decomposition for quadruple patterning lithography and beyond"
    - "methodology for standard cell compliance and detailed placement for triple patterning lithography"
    - "l shape based layout fracturing for e beam lithography"
    - "triad a triple patterning lithography aware detailed router"
    - "layout decomposition for double patterning lithography"

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.AR(Hardware Architecture)