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We present SkexGen, a novel autoregressive generative model forcomputer-aided design (CAD) construction sequences containingsketch-and-extrude modeling operations. Our model utilizes distinct Transformerarchitectures to encode topological, geometric, and extrusion variations ofconstruction sequences into disentangled codebooks. Autoregressive Transformerdecoders generate CAD construction sequences sharing certain propertiesspecified by the codebook vectors. Extensive experiments demonstrate that ourdisentangled codebook representation generates diverse and high-quality CADmodels, enhances user control, and enables efficient exploration of the designspace. The code is available at https://samxuxiang.github.io/skexgen.

SkexGen: Autoregressive Generation of CAD Construction Sequences with Disentangled Codebooks