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arXiv 2205.03005cs.LG
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设计目标实现指数:一种增强多目标逆向设计中深层生成模型的可区分度量

Design Target Achievement Index: A Differentiable Metric to Enhance Deep Generative Models in Multi-Objective Inverse Design

Massachusetts Institute of Technology(麻省理工学院)

Lyle Regenwetter, Faez Ahmed

摘要:

深度生成机器学习模型在设计界越来越受欢迎,这要归功于它们学习和模拟复杂数据分布的能力。虽然早期的工作是有希望的,进一步的进步将取决于解决几个关键的考虑因素,如设计质量,可行性,新颖性和有针对性的逆向设计。我们提出了设计目标实现指数(DTAI),一个可区分的,可调的指标,得分设计的能力,实现设计师指定的最低性能目标。我们证明了DTAI在直接用作深度生成模型中的训练损失时可以大大提高生成设计的性能。我们将DTAI损失应用于性能增强的多样性GAN(PaD GAN),并与一组基线深度生成模型(包括多目标PaD GAN和专用表格生成算法,如条件表格GAN(CT GAN))相比,表现出卓越的生成性能。我们进一步增强PaDGAN与辅助可行性分类器,以鼓励可行的设计。为了评估方法,我们提出了一套全面的评估指标的生成方法,专注于可行性,多样性和满意度的设计性能目标。方法进行测试的一个具有挑战性的基准问题:FRAMED自行车车架设计数据集具有混合数据类型的参数数据,严重偏斜和多模态分布,和十个竞争的性能目标。

英文摘要:

Deep Generative Machine Learning Models have been growing in popularity across the design community thanks to their ability to learn and mimic complex data distributions. While early works are promising, further advancement will depend on addressing several critical considerations such as design quality, feasibility, novelty, and targeted inverse design. We propose the Design Target Achievement Index (DTAI), a differentiable, tunable metric that scores a design's ability to achieve designer-specified minimum performance targets. We demonstrate that DTAI can drastically improve the performance of generated designs when directly used as a training loss in Deep Generative Models. We apply the DTAI loss to a Performance-Augmented Diverse GAN (PaDGAN) and demonstrate superior generative performance compared to a set of baseline Deep Generative Models including a Multi-Objective PaDGAN and specialized tabular generation algorithms like the Conditional Tabular GAN (CTGAN). We further enhance PaDGAN with an auxiliary feasibility classifier to encourage feasible designs. To evaluate methods, we propose a comprehensive set of evaluation metrics for generative methods that focus on feasibility, diversity, and satisfaction of design performance targets. Methods are tested on a challenging benchmarking problem: the FRAMED bicycle frame design dataset featuring mixed-datatype parametric data, heavily skewed and multimodal distributions, and ten competing performance objectives.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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