根据计算预算动态分配图像到不同复杂度的分类节点,提升准确率。
Exploring Budgeted Image Classification with Content-Sensitive Resource Allocation

- 设计内容敏感的资源分配策略,按图像特征智能分配计算开销。
- 在有限预算下,相比无差别分配,准确率提升显著,实测效果更优。
- 适用于边缘设备部署、实时系统等算力波动场景的AI模型优化。
随着人工智能的广泛应用,深度神经网络需在多样计算环境中部署。本文研究动态环境下计算需求变化时,如何调整AI分类系统的复杂度,在满足计算预算的前提下最大化准确率,提出‘预算内图像分类’问题,并形式化为资源分配整数规划。给定计算预算、一批图像及具有多个决策点的分类系统,探索将图像分配至不同决策点以提升准确率。原始整数规划为NP难问题,故采用连续松弛得到内容无关的分配策略;进一步提出内容敏感策略,实验表明其性能更优。理论分析了决策点适用条件,识别失败案例,为未来研究提供方向。
原文摘要 · Abstract (English)
The ever-growing adoption of Artificial Intelligence (AI) creates the need to deploy Deep Neural Networks in a variety of computational environments. We consider dynamic environments, where computational requirements are subject to change, and we pose the following question: How do we adjust the complexity of an AI classification system, in order to maximize its accuracy, while meeting changing computational constraints? We call this problem Budgeted Image Classification, and we formally formulate it as a resource allocation integer program. Given a computational budget, a batch of images, and a classification system that can make decisions with varying complexity (it has multiple decision points), we explore strategies to allocate images to decision points, in order to maximize accuracy within the available budget. The original integer program is NP-Hard, so, we propose a continuous relaxation, leading to a content-agnostic allocation strategy which assigns images to decision points without considering their particular content. We address this issue by proposing a content-sensitive strategy, that we experimentally show it leads to superior performance. We theoretically study the behavior of our strategies, deriving conditions that must be satisfied by decision points to be suitable for budgeted classification. We analyze fails cases, offering insights for future research directions.
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