human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "multiplierless approximate 4 point dct vlsi architectures for transform block coding"):
  Abstract: Two multiplierless algorithms are proposed for 4 × 4 approximate-discrete cosine transform (DCT) for transform coding in digital video. Computational architectures for one-dimensional (1D)/2D realisations are implemented using Xilinx field programmable gate array devices. CMOS synthesis at the 45 nm node indicates real-time operation at 1 GHz yielding 4 × 4 block rates of 125 MHz at < 120 mW of dynamic power consumption.

Includes members:
  Member "dct like transform for image compression requires 14 additions only":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "multiplierless 16 point dct approximation for low complexity image and video coding")
  Member "a dct approximation for image compression":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "multiplierless 16 point dct approximation for low complexity image and video coding")

Question: Please tell me which class the source paper 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)