$\alpha$NAS: Neural Architecture Search using Property Guided Synthesis

• URL: http://arxiv.org/abs/2205.03960v1
• Date: Sun, 8 May 2022 21:48:03 GMT
• Title: $\alpha$NAS: Neural Architecture Search using Property Guided Synthesis
• Authors: Charles Jin, Phitchaya Mangpo Phothilimthana, Sudip Roy
• Abstract summary: We develop techniques that enable efficient neural architecture search (NAS) in a significantly larger design space. Our key insights are as follows: (1) the abstract search space is significantly smaller than the original search space, and (2) architectures with similar program properties also have similar performance. We implement our approach, $alpha$NAS, within an evolutionary framework, where the mutations are guided by the program properties.
• Score: 1.2746672439030722
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In the past few years, neural architecture search (NAS) has become an increasingly important tool within the deep learning community. Despite the many recent successes of NAS, current approaches still fall far short of the dream of automating an entire neural network architecture design from scratch. Most existing approaches require highly structured design spaces formulated manually by domain experts. In this work, we develop techniques that enable efficient NAS in a significantly larger design space. To accomplish this, we propose to perform NAS in an abstract search space of program properties. Our key insights are as follows: (1) the abstract search space is significantly smaller than the original search space, and (2) architectures with similar program properties also have similar performance; thus, we can search more efficiently in the abstract search space. To enable this approach, we also propose an efficient synthesis procedure, which accepts a set of promising program properties, and returns a satisfying neural architecture. We implement our approach, $\alpha$NAS, within an evolutionary framework, where the mutations are guided by the program properties. Starting with a ResNet-34 model, $\alpha$NAS produces a model with slightly improved accuracy on CIFAR-10 but 96% fewer parameters. On ImageNet, $\alpha$NAS is able to improve over Vision Transformer (30% fewer FLOPS and parameters), ResNet-50 (23% fewer FLOPS, 14% fewer parameters), and EfficientNet (7% fewer FLOPS and parameters) without any degradation in accuracy.

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