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相关概念视频

Energy Budgets00:51

Energy Budgets

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Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
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Acid Attack on Concrete01:21

Acid Attack on Concrete

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When acids come into contact with concrete, they initiate a chemical reaction that dissolves the hydrated cement paste. This process leads to softening and structural weakening of the concrete. This issue is commonly observed in environments such as chimneys, sewers, and industrial settings. The severity of the damage increases as the pH of the water interacting with the concrete drops below 6.5. In particular, a pH under 4.5 can cause significant concrete damage.
The rate at which hydrogen...
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Sulfate Attack on Concrete01:29

Sulfate Attack on Concrete

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Sulfate attack on concrete is a deterioration process characterized by a whitish discoloration beginning at the edges and corners, accompanied by cracking and spalling. This phenomenon occurs when sulfates react with the components of hardened concrete, forming compounds like calcium sulfate and calcium sulfoaluminate which occupy more space than the substances they replace, causing the concrete to expand and disrupt.
Sulfates from sources like soil, groundwater, or industrial effluents...
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Decision Making01:20

Decision Making

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Decision-making is a fundamental cognitive process that involves evaluating alternatives and selecting among them. This process can range from simple choices, such as deciding what to wear, to complex decisions, like choosing a major in college or a career path. The complexity of the decision often dictates the approach we use, which can be broadly categorized into two types: automatic and controlled decision-making.
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Decision Making: P-value Method01:09

Decision Making: P-value Method

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The process of hypothesis testing based on the P-value method includes calculating the P- value using the sample data and interpreting it.
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim  is also stated. These statements can act as null and alternative hypotheses:  a null hypothesis would be a neutral statement while the alternative hypothesis can...
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Decision Making: Traditional Method01:14

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The process of hypothesis testing based on the traditional method includes calculating the critical value, testing the value of the test statistic using the sample data, and interpreting these values.
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相关实验视频

Updated: Feb 4, 2026

Executing Complexity-Increasing Queries in Relational MySQL and NoSQL MongoDB and EXist Size-Growing ISO/EN 13606 Standardized EHR Databases
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查询效率高的基于决策的对抗性攻击,查询预算低.

Yangzhuo Tuo1, Mengge Yin1, Shengbing Che2

  • 1School of Electronic Information and Physics, Central South University of Forestry and Technology, Changsha, 410004, China.

Scientific reports
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概括

这项研究引入了一种新的基于决策的攻击,称为One Plane One Query Attack (OPOQA),以高效地为深度神经网络创建对抗示例. 通过更少的查询,OPOQA显著提高了攻击成功率,从而增强了模型安全研究.

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科学领域:

  • 人工智能的人工智能
  • 计算机视觉 计算机视觉
  • 机器学习安全 机器学习安全

背景情况:

  • 深度神经网络 (DNN) 实现了高性能,但容易受到对抗的例子的影响.
  • 由于对模型内部的访问有限,现实世界的模型攻击具有挑战性,因此基于决策的攻击至关重要.
  • 现有的基于决策的攻击需要大量的查询,这限制了它们的实际应用.

研究的目的:

  • 开发一种新的,高效的基于决策的攻击方法,用于生成高质量的对抗性示例.
  • 为了减少对DNN.N的成功对抗性攻击所需的查询预算.
  • 增强DNN的安全分析,防止对手操纵.

主要方法:

  • 引入了一个平面一个查询攻击 (OPOQA) 方法.
  • 采用了一个从低频离散等号变换 (DCT) 空间采样的2D平面内生成候选示例的策略.
  • 利用反向DCT (iDCT) 将样本转换回像素空间,每次代只查询一个候选项以尽量减少查询数量.

主要成果:

  • 在ImageNet数据集上,在Inception-v3,ResNet和VGG等主流模型上实现了高的攻击成功率.
  • 与最先进的EPCA算法相比,表现出优越的性能,在RMSE值分别为0.05和0.01时,攻击成功率增加了4.5%和11.5%.
  • 在一个低查询预算 (1000个查询) 中,成功生成了几乎不可察觉的对抗性示例.

结论:

  • OPOQA是一种有效和高效的基于决策的攻击,用于生成高质量的对抗性示例.
  • 拟议的方法大大降低了对抗性攻击的查询复杂性,使其更实用.
  • 这项研究有助于理解和提高深度神经网络的安全稳定性.